Inverter Circuit

12V to -165V 100mA DC Converter

2012-01-23T16:33:00.000-08:00

Here is the circuit of 12V to -165V 100mA DC converter. This circuit uses the MAX668 and a transformer (which will need about a one-to-six turns ratio) to build a flyback converter. The op-amp module is used to invert the feedback from the negative output voltage.

The circuit produces -165V at 100mA from a +12V input. Primarily based on a MAX668 transformer flyback application, the circuit utilizes a custom transformer to produce -165V through a combination of turns ratio and duty cycle. The transformer is designed on an SG5-size bobbin to facilitate the winding and to reduce the leakage inductance.

D2 is preferred as a fast-recovery diode to moderate the cost for a high-breakdown voltage part. Since the diode will see 165V + (6 x Vin) + flyback due to leakage inductance, a 600V rating is required. C3 is selected as a film capacitor to get high voltage rating and high ripple-current capacity.

The MAX668 is designed for a wide range of DC-DC conversion applications including step-up, SEPIC, flyback, and isolated-output configurations. Power levels of 20W or more can be controlled with conversion efficiencies of over 90%. The 1.8V to 28V input voltage range supports a wide range of battery and AC-powered inputs. An advanced BiCMOS design features low operating current (220µA), adjustable operating frequency (100kHz to 500kHz), soft-start, and a SYNC input allowing the MAX668 oscillator to be locked to an external clock.

Download MAX668 datasheet
Source: www.maxim-ic.com

DC to DC Converter 12V to 9V

2012-01-18T02:41:00.000-08:00

This is the circuit diagram of DC to DC converter, converts a 12V input to 9V output. The voltage output stabilized by Z1 dioda zener, while the ECG184 is used to boost the output current.

Components List:
R1 = 560 ohm
C1 = 1000uF/40V, Electrolytic
C2 = 10uF/25V, Electrolytic
C3 = 330nF, Ceramic
Z1 = 9.1V, 1watt zener
Q1 = ECG184, NTE184

Circuit Notes:
To achieve a more precise output voltage, replace R1 with a 1K ohm potentiometer and zener diode Z1 with 10V. A heatsink for Q1 is optional but highly recommended. You can replace Q1 for a more robust type to get more output amps depending on your needs. This is a simple and easy circuit to power your 9 volt cassette recorder and other stuff.

Whistler 2500W Power Inverter

2012-01-12T18:06:00.000-08:00

This is a high power inverter product from Whistler, give you high 120V AC power output by converting car battery. This inverter capable to power up the load up to 2500W. This is very high capability of an inverter. USB port and remote control system is provided in this inverer product.

Whistler 2500W Power Inverter Review:

The Whistler Pro 2500W easily starts up and runs a freezer and sump pump in my home that the Power Bright PW2300 just could not start. Here's my story. I actually purchased the Power Bright PW2300 for back up power to operate my sump pump and freezer in case of power outages due to hurricane Irene. In a dry run (as it were), I hooked the Power Bright up to my car battery using the sugessted 4 gauge connectors and it powered up the sump pump motor ok. But it just could not get the freezer motor to turn on.

OK so the manual says that when starting a motor, start-up surge must be considered. Start-up surge is explained as the extra watts the appliance requires to turn on or "start up" and that can be up to 10 times its rated watts. I felt the Power Bright PW2300 had enough power head room but for some reason, it would not start up the freezer motor. Based on another reviewer's comments, I returned it and bought the Whistler pro 2500 watt inverter. It was even a few dollars less than the Power Bright. The Whistler had not come up in my original search so I did not know about it until I noticed the reviewer's comments. Hooked it up and the freezer started right up no problem. Maybe the difference between "2300" and "2500" was the extra umph that I needed. I am not sure but there was no comparison. If you are trying to power household devices with motors then I suggest going with the 2500 as a minimum. As a bonus, the wattage out indicator in the Whistler works much better than the Power Bright's and the Whistler has three outlets vs two and also has a USB outlet. Good luck and make sure to get the low gauge connectors to meet your needs otherwise you are draining power!

Product Features:

2500 Watts Continuous power - 5000 Watts Surge Capacity (Peak Power)
Mountable. Features 3 AC Outlets and 1 USB Port, along with Digital Battery Volt/Watt Meter (Monitors input volts and output watts).
High Surge / Ground Fault Sensing / Overload Indicator / Remote Operation Jack.
Thermostat-controlled Cooling Fan.
For safety, features five separate points of Electronic Circuit Protection.

Whistler 2500W Power Inverter ready at amazon.com
BUY THIS INVERTER

Inverter for 20W/40W Fluorescent Lamp

2012-01-04T17:30:00.000-08:00

It is a low-cost inverter circuit for 20W or 40W fluorescent lamp. Even so essentially the most effective is to work with a 40 W tube (or two 20 watt tubes in series). This is a circuit you are able to put collectively from junk box components or assemble from a kit. It really is very easy to construct and needs no printed circuit board.

The transformer is hand-wound on a ferrite rod (from an old transistor radio) along with the winding wire could be salvaged from an old transformer. We're purposely maintaining expenses down to display how cheaply it could be place collectively. Based in your stock of components, the price could array from $3.00 to about $15.00 and in the event the wires in the transformer are soldered towards the ends from the tube(s), it is possible to make a free-standing light that may be set-up within the garden to illuminate a dark place without the need of the worry of operating 240V wiring. The price of powering the circuit is about 22W and this can generate the identical light output like a 60W globe.

The kit is available for this circuit, then it should be work and already tested.

Read more about this inverter circuit project, visit this page.

DC Converter Circuit +9V to -9V

2011-12-26T04:53:00.000-08:00

Here the schematic diagram of DC converter circuit converting input voltage of +9V to be -9V on output side. Those of you who frequently use devices that work on battery or you need a negative trend at the moment you've a single positive, will surely search for a converter such as the one described below.

Assembling this circuit, you'll be able to convert a positive voltage of a battery of 9 V to negative, working with popular integrated timer IC 555. The same circuit can also be utilized in conditions those requiring two symmetrical lines of power, when available a single battery. The integrated TLC555 will be the old bipolar NE555, manufactured with technology but CMOS. Unless you have this type of integrated, you might also use an 7555. In this design, the TLC555 is syndesmologimeno set up in a ground unstable.

The oscillation frequency established by the A2, A3, C 1 and getting close to 20 kHz. The rectangular waveform generated by the oscillator is therefore time to time (Duty Cycle) close to 50%. The waveform is led to a rectifier Doubler formed by C3, O1, O2 and C4. In place of O1 and O2 need to be placed diodes Schottky type VAT85 because of low voltage correct direction that is equal to 0,4 V (silicon diodes such as type 1N4148, present a tendency equal to 0,7 V).

The capacitor C4 concerns for smoothing the voltage bristled, while the C5 relieve the signal from noise high frequencies. Using the support of A1, C6 and C7 accomplished the disconnection of supply voltage timer. The consumption of the inverter to power relies largely on the load to be connected to the output of -9 V. The output voltage is held within tolerable levels, because the load current is kept lower than 1O mA. For making it simple and easy to integrate the inverter into any electronic device, I recommend you to make a small/compact PCB board.

DC Converter 12V to 24V

2011-12-19T05:26:00.000-08:00

This is the simple DC-DC converter which capable in converting a 12V source become up to 24V output. Ypu can implemented this circuit to supply radios, small lights, relays, horns and other 24V electronic appliance from a 12V car battery with a maximum draw of about 800mA. This circuti also can be applied to charge one 12V battery from another battery, or step up the voltage just enough to provide necessary overhead for a 12V linear regulator. Using one op-amp as a squarewave oscillator to ring an inductor and another op-amp in a feedback loop, it won't drift around under varying loads, delivering a stable 24V source for many electronic applications. With a wide adjustment in output, this circuit has many functions.

Components List:

R1,R2,R3,R4,R8,R7 = 100K 1/4W Resistor
R5 = 470 Ohm 1/2W Resistor
R6 = 10K Linear Pot
C1 = 0.01uF Mylar Capacitor
C2 = 0.1uF Ceramic Disc Capacitor
C3 = 470uF 63V Electrolytic Capacitor
D1 = 1N4004 Rectifier Diode
D2 = BY229-400 Fast Recovery Diode
Q1 = BC337 NPN Power Transistor
U1 = LM358 Dual Op Amp IC
L1 = See Notes
MISC = Board, Wire, Socket For U1, Case, Knob For R6, Heatsink for Q1

Circuit Notes:

R6 is used to set the output voltage. This can be calculated by Vout = 12 x (R8/(R8+R7)) x (R6B/R6A).
D2 can be any fast recovery diode rated at greater then 100V at 5A. It is very important that the diode be fast recovery and not a standard rectifier.
L1 is made by winding 60 turns of 0.63MM magnet wire on a toroidial core measuring 15MM (OD) by 8MM (ID) by 6MM (H).
Mount a heatsink to Q1 to prevent overheating on its.

DC Converter 12V to 24V, page circuit source: aaroncake.net

6V to 12V - DC to DC Converter Circuit with TDA2003

2011-11-24T00:53:00.001-08:00

This is the DC to DC converter circuit which will double the input voltage of 6VDC to become 12vDC with minimal electronic current loss. The IC1 op-amp functions as a stable power multivibrator. Its oscillation frequency is determined by C3. It's oscillates at about 4kHz at standby and heightens in a loaded state nearly about 7kHz. The output of the IC2 op-amp is identical to the IC1 oscillator signal but in the opposite phase.

Once the output of IC1 is at zero, the C4 charges through the diode D1 up to the power supply level minus the voltage drop at D1. Once the IC1 swings to the opposite direction, its output come to be positive. The output voltage from IC1 adds up to the voltage stored at C4 forcing the diode D1 to stop conducting. C5 then charges through the diode D2 to a voltage that is certainly double than the power supply level.

The theoritical output could reach the triple of the source voltage. To guard against unnecessary voltage increases at low current consumptions, a limiter stage was added to the circuit composed of a 15 volt zener diode and a darlington transistor T1/T2. This stage caps the output voltage to about 14.2 volts. To fiter out ripple from the output, C8 was also added. This will help to avoid the hum signal from being observed on radio or audio devices.

In making the 6 to 12 volts converter, attach the ICs to a standard heatsink close to the pcb. The transistor has to be attached to a separate heatsink. To acquire a considerably higher current output from the converter, C4, C5 and C6 have to be enhanced to 2200uF.

6V to 12V - DC to DC Converter Circuit with TDA2003, Source page: apowersupply.com

+5V to -5V DC Converter Circuit

2011-11-12T03:55:00.001-08:00

This is the schematic diagram +5V to -5V DC converter based on single IC LTC1046 and supported with only two electrolytic capacitors. of The LTC1046 is a 50mA monolithic CMOS switched capacitor voltage converter. The device is optimized to provide high current capability for input voltages of 6V or less. It trades off operating voltage to get higher output current.

LTC1046 Features

50mA Output Current
Plug-In Compatible with ICL7660/LTC1044
ROUT = 35W Maximum
300mA Maximum No Load Supply Current at 5V
Boost Pin (Pin 1) for Higher Switching Frequency
97% Minimum Open-Circuit Voltage Conversion Efficiency
95% Minimum Power Conversion Efficiency
Wide Operating Supply Voltage Range: 1.5V to 6V
Easy to Use
Low Cost

Datasheet for LTC1046 including the application notes: visit this page

DC to DC Converter 12V to Splitted +/- 20V 100W

2011-11-02T19:29:00.000-07:00

This is the circuit diagram of DC to DC converter which will convert 12V car battery to split power supply of +/- 20V. The power output will be up to 100W.

The purpose of this circuit is to supply the power audio amplifier circuit from a car battery. You may use this circuit to supply other circuits which require split / dual polarity power supply.

In fact the max audio power x speaker (with 4 ohm impedance) using 12V is (Vsupply+ - Vsupply-)^2/(8*impedance) 12^2/32 = 4.5Watts per channel, that is laughable...

For powering correctly an amplifier the best is to use a symmetric supply with a high voltage differential. for example +20 - -20 = 40Volts
in fact
40^2/32 = 50 Watts per channel that is respectable.

This supply is intended for two channels with 50W max each (of course it depends on the amplifier used). Though it can be easily scaled up or the voltages changed to obtain different values.

Read the detailed explanation about this circuit:
DC to DC Converter 12V to Splitted +/- 20V 100W

500W Power Inverter 12VDC to 220VAC

2011-10-27T06:43:00.000-07:00

500W power inverter 12VDC to 220VAC, the inverter is using full transistors for both multivibrator module and power amplifier module. There are total of 10 2N3022 transistors for power amplifier.

The input supply should be a car battery rated at 12V/50A to get maximum power and maximum inverter usage when supplying some electronic devices. This 500W power inverter circuit is inexpensive and easy to make. The headsink should be used to prevent overheating on the power transistors.

Simple 12/220V AC to DC Inverter Circuit

2011-10-23T08:11:00.000-07:00

This DC to AC inverter circuit operate based on unstable multivibrator does. In this inverter circuit, IC CD4047 is determined as a heart of unstable multivibrator, due to the fact this IC type provides a complementary output which has opposite phase to another (pin 10 and 11), and has 50 % duty cycle that satisfy to create a pulse for inverter.

To be able to boost the current out of multivibrator so adequate to produce a higher AC power too, then we have to work with MOSFET IRFZ44. IRFZ44 delivers out high current to drive a step-up transformer, so AC power is ready at the high voltage side of transformer.

This circuit is known as as simple DC to AC inverter since the output have not a sinusoidal signal yet, so there are lots of harmonic signal at the output. To suppress this signal we have to use a filter just like a capacitor C. Because of this simplicity this circuit is appropriate only for lighting demand. To generate a sinusoidal DC to AC inverter, it is possible to use a PWM signal for driving a step-up transformer.

3000W Getics Off-Grid Solar Inverter

2011-09-26T00:46:00.000-07:00

Here the 3000W Getics Off-Grid Solar inverter available in market. Getics Off-Grid Inverter consists of 3 modules in a single unit: inverter, intelligent charger and switch. The inverter is really a heavy-duty, continuous operating module producing a sinusoidal wave from a 24V battery bank which can supply energy to a variety of electronic loads for example resistive loads (heater), inductive loads (air conditioners, refrigerators), motors (vacuum cleaners), and rectifier loads (personal computer). This off grid inverter is for an off grid solar system to be applied with solar panels and batteries. Inverter 3000W - 24V DC.

3000W Getics Off-Grid Solar Inverter Features:

Inverter plus Smart Charger and Switch
Complete elimination of grid-tied utility bills
After installation, harnest the power of the sun for many years
Minimal maintenance

3000W Getics Off-Grid Solar Inverter best buy:
http://www.amazon.com/exec/obidos/ASIN/B002MWC3PE/digcamnewandr-20

12VDC to 220VAC High Power Inverter with Sine Output

2011-09-15T04:17:00.000-07:00

Here the diagram of high power inverter circuit converting 12VDC to become 220VAC.

The circuit is using FET FQB45N03 for signal amplification, and TL494 as pulse width modulation control. The circuit give you sine wave output with 50Hz frequency.

12VDC to 220VAC high power inverter circuit with sine output, schematic diagram source: http://powersupply88.com/12220v-converter-with-sine-output.html

500W Solar Power Inverter

2011-09-05T15:05:00.000-07:00

This is a 500W Solar Power Inverters which featuring an exclusive Sonic Compression technology, deliver clean, reliable ac power from a 12 Volt power source. This model features dual AC outlets and a USB port to power small electronic devices. It includes a battery clamp/cable set and a 12V plug/cable set for connection to the 12V power source.

Buy 500W Solar Power Inverter Here

UNI 6000W Solar Inverter Fronius IG Plus 6.0-1

2011-08-24T06:58:00.000-07:00

Here the 6000W Solar Inverter product...
Description: Grounding selectable on site. Decide on site what type of grounding is required as the Fronius IG Plus is field programmable for either positive or negative module grounding.

This 6000W solar inverter is available at amazon store, buy the inverter here

300W Solar Inverter

2011-08-18T06:46:00.000-07:00

This is the solar inverter for sale. The inverter can be handle up to 300W loads. This product contains: Solar, Power, Inverter, Backup Battery an featuring Emergency Power.

This solar inverter available at amazon store, buy the inverter here

40W Inverter Circuit for Fluorescent Lamp

2011-08-14T07:49:00.000-07:00

40W Inverter Circuit for Fluorescent Lamp. This circuit purpose is for emergency light. The working of the circuit is very simple, it is just like general inverter circuit, there is a simple wave generator by resistor/capacitor, a simple signal amplifier by power transistor and step up transformer to increase the AC voltage. Take a note that the heatsink is required for the transistor.

Parts List:

R1 = 180 Ohm 1W
R2 = 47 Ohm 1/4W
R3 = 2.2 Ohm 1W Resistor (only needed once)
C1, C2 = 100uF/16V
C3 = 100nF
Q1 = TIP 3055 or 2N3055 or equivalent

Go to this page for detailed explanation about 40W Inverter Circuit for Fluorescent Lamp

1200 Watt Whistler Power Inverter

2011-08-03T20:26:00.000-07:00

This is a 1200W power inverter produced by Whistler. You may use this inverter to supply your home electronic device such as computer desktop, laptop, mini microwave, TV, blender, game console, small fan, mini refrigerator etc.

1200 Watt Whistler Power Inverter Features

Mountable. Features 3 AC Outlets and 1 USB Port, along with Digital Battery Volt/Watt Meter (Monitors input volts and output watts).
1200 Watts Continuous power - 2400 Watts Surge Capacity (Peak Power)
Thermostat-controlled Cooling Fan.
High Surge / Ground Fault Sensing / Overload Indicator / Remote Operation Jack.
For safety, features five separate points of Electronic Circuit Protection.

Buy the 1200 Watt Whistler Power Inverter from Amazon.Com

8 Watt Fluorescent Lamp Inverter Circuit

2011-07-24T22:27:00.000-07:00

The following circuit is a 8 watt power inverter circuit:

Basically, the circuit has been designed to drive an 8W fluorescent lamp from a 12V power supply, applying an cheap inverter based on the ZTX652 transistor.

The inverter will drive from supplies in the variety of 10V to 16.5V, attaining efficiencies as much as 78% thus allowing it suitable for use in on-charge systems like as caravans / mobile homes / RVs as well as periodically charged systems like as camping lights, roadside lamps or outhouse lights etc. Other capabilities of the inverter are that it oscillates at an inaudible 20kHz and that it consists of reverse polarity protection.

8W Inverter Circuit Download Area:

Download the 8W fluorescent lamp inverter application note here
Download the ZTX652 datasheet here

1000W, Go-Power Modified Sine Wave Inverter

2011-07-10T02:07:00.000-07:00

This is an assembled inverter which has modified sinewave:

1000W Modified Sine Wave Inverter product review:

Review 1:
I've only had it for a week, but so far I'm extremely impressed. I use it to power my 2.1 pc speakers (200 watts) and it's stunning. Also because it has two outlets, I can charge my phone in my automobile at exactly the same time! Fantastic item, fantastic cost. Cig lighter hook up is Cash!

Review 2:
Lately bought this inverter to make use of as dedicated DC inverter for AC refridgerator onboard my boat. Appears to be working fine but time will tell. Fridge was AC/DC but DC inverter built into the fridge was not funtioning. Running fridge on DC power full time under way and switch plug over manually to AC whilst docked.

1000W Modified Sine Wave Inverter product features:

1000 watts of continuous power
Use GP-DC-KIT2 for easy hook-up to the battery
2 AC outlets to plug into
Over voltage, under voltage and overload protections

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1000W Power Inverter - Black & Decker

2011-07-06T04:36:00.000-07:00

1000W Power Inverter - Black & Decker review:

This inverter could be the greatest that I've ever utilised. I use it in my truck, I've an Alienware laptop that requires 400 watts of power minimum, and this can be the only way out!

I've put to use this on a mobile video set in a field, operating two 450 watt Aries Video lights (make certain your car is operating, or your battery will die extremely rapidly). I produced a portable lighting remedy using a single Arie 250w light and this unit strapped towards the side of a auto battery (45m-hour of life)

I've also had an Xbox Rock Band Party within the parking lot at my school, operating an Xbox and Television off from the bed of my truck! (lasts about 40 minutes on a complete vehicle battery devoid of beginning the car)

On a final note, it is possible to run this unit off of one's car's cigarette lighter for portability, Nevertheless don't exceed 300-400 watts on the meter or you are going to burn out your car's fuse, or worse. (Optimally, Wire this unit like you'll a huge automobile stereo Amplifier, immediately from the battery to work with its complete capability.)

Product Features

Maximum continuous power is 1000 watts
Powers up to 8.5 amperes
Converts vehicle DC power into 120 volts AC power
Soft start technology prevents start-up surge
Output voltage range between 105-125 volts

Buy the 1000W Power Inverter - Black & Decker from Amazon.Com

12VDC Fluorescent Lamp Driver Circuit

2011-06-29T20:15:00.000-07:00

This is the circuit diagram which can be used to supply a fluorescent lamp from 12V battery. It uses a normal 120 to 6V stepdown transformer in reverse to step 12V to about 350V to drive a lamp without the need to warm the filaments. Of course, basically it is an inverter circuit with very small power output (about 3-5W).

Component Parts List:
C1=100uF/25V
C2,C3 = 10nF 25V
C4 = 10nF/1KV
R1 = 1K 1/4W
R2 = 2.7K 1/4W Resistor
Q1 = IRF510 MOSFET
U1 = TLC555 Timer IC
T1 = 6V secondary 120V primary / 300mA Transformer
LAMP 4W Fluorescent Lamp
MISC Board, Wire, Heatsink For Q1

Circuit Notes:

Install heatsink on MOSFET Q1 to prevent over heating
You may use transformer 240V primary and 10V secondary for better result, but they are litle hard to find.

Cobra Power Inverter 400W12VDC to 120VAC

2011-06-25T02:52:00.000-07:00

Cheap inverter with high rated reviews by its user, this inverter is recommended if you're looking for inverter which convert 12VDC to become 120VAC with power comsumption under 200W (for safety usage).

Cobra Power Inverter 400W Product Features:

400 W Continuous Power Handling
5v USB output
2 Grounded AC Receptacles
Thermal Shutdown and Reverse Polarity Protection

Cobra Power Inverter 400W Review:
I bought an older model conversion van with reduced miles using the intention of placing some up to date electronics in it like a dvd player, flat screen television, and nintendo wii. Let me let you know that using this inverter was all I needed to hook it up fairly nicely. All three appliances are hooked as much as this thing with the addition of a serge protector and work flawlessly. Its all a matter of operating it via the battery instead of utilizing the cigarette lighter. Just be sure that the appliance you need to give power to is no much more than a 120v current, which most aren't anyway. But this product is fantastic and I'm 100% happy!

Buy the Cobra Power Inverter 400W12VDC to 120VAC from Amazon.Com

Simple Inverter Circuit for Florescent Lamps

2011-06-21T02:40:00.000-07:00

This inverter circuit is extremely simple to construct, trustworthy, and even effective adequate to light up a 15W florescent tube (if you cool your transistor nicely). The only hard-to-find piece of this circuit will be the so-called yellow inverter transformer. It really is a miniature high frequency transformer that features a 25mm x 20mm x 5mm ferrite core, 30 turns of main, 15 turns of feedback, and 250 turns of secondary all concentric, wound on plastic frame than wrapped having a 'yellow' adhesive tape.

If you cannot find it within your regional electronic shops then search for old portable rechargeble florescent lanterns considering that they have at least a single yellow inverter. Naturally you can wind a handmade transformer which would do the same nonetheless it is actually a really tough job if you don't have an original to inspire and it'll nonetheless require an proper ferrite core.

Characteristics:

Bipolar NPN transistor  : 2SD882 (or D882 as labeled)
Casing                  : TO126
Max. collector current  : 3 Amperes
Max. total power        : 10 Watts, while case is at 25 degrees Celsius
Transition frequency    : 45 MHz
Max. collector capacity : 45 pF
hFE (current gain)      : 160 at 1 Ampere (typical value)

Bipolar NPN transistor  : BD243C
Casing                  : TO220
Max. collector current  : 6 Amperes
Max. total power        : 65 Watts, while case is at 25 degrees Celsius
Transition frequency    : 3 MHz
hFE (current gain)      : 30 at 300mA (minimum value)

Here the action:

Detailed explanation, go to the original page of Simple Inverter Circuit for Florescent Lamps

1500W Cobra Power Inverter 12VDC to 120VAC

2011-06-15T15:48:00.000-07:00

Power Inverter manufactured by Cobra, capable converting input battery 12VDC to become 120VAC with power loads (output) up to 1500W.

This inverter gives household power on the go. It converts battery power to 120 V AC household power, permitting you to power up office equipment and household appliances from your vehicle. This unit is ideal for such appliances as microwave ovens (1000 watts or much less), coffeemakers, laptops, TVs, video game consoles, CD and DVD players, cell phone chargers, and far more.

How The Cobra Power Inverter Works
The Cobra power inverter is an electronic item that has been created and built to take low-voltage DC (Direct Current) power from your automobile or other low-voltage power supplies and convert it to standard 115 volt AC (Alternating Current) power like the current you've inside your residence. This conversion process thereby allows you to make use of numerous of your household appliances and electronic goods in automobiles, RVs, boats, tractors, trucks, and practically anywhere else.

Cobra 1500 Watt Output Waveform
Some quite sensitive electronic equipment could not operate satisfactorily on "square wave" or "modified sine wave" power. The output waveform of the Cobra Inverter is actually a "square wave" or "modified sine wave." It truly is a stepped waveform created to have characteristics similar to the sine wave shape of utility power. A waveform of this nature is suitable for most AC loads, including linear and switching power suppliers used in electronic equipment, transformers, and motors.

AC receptacles
With three ground AC receptacles, you can connect and power multiple devices at as soon as.

USB Output
The 5-Volt USB output permits charging and operation of modern portable devices, for example iPods, BlackBerrys, and cell phones.

Remote On/Off Switch Capable
An optional Remote On/Off Switch could be connected to the Remote Jack, allowing you to turn the Cobra power inverter on or off from a convenient location when the inverter is installed out of reach.

Safety Features
The CPI 1575 will notify you with a flashing meter and alarm sound when there is a power issue, and will shut down for protection in the following situations:

Current Overload Protection--If the inverter is overloaded, it'll shut down to protect itself.
Short Circuit Protection--If the AC output of the inverter is short-circuited for 1 second or more, it is going to shut down to safeguard itself.
Low Voltage Protection--If the input voltage drops to 10.0V or much less, the inverter will shut down to protect itself.
High Voltage Protection--If the DC input voltage rises above 15.0V, the inverter will shut down to safeguard itself.
Over Temperature Protection--If the internal temperature rises to 40 degrees C (104 degrees F), the inverter will shut down to safeguard itself.

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Inverter Circuit for Soldering Iron

2011-06-12T03:04:00.000-07:00

The following inverter circuit can be used to supply soldering iron or other small electronic devices which need up to about 50W / 230V power supply.

Transistors T1 and T2 (each BC547) form an astable multivibrator that creates 50Hz signal. The complementary outputs from the collectors of transistors T1 and T2 are fed to pnp Darlington driver stages formed by transistor pairs T3-T5 and T4-T6 (utilising BC558 and BD140). The outputs from the drivers are fed to transistors T7 and T8 (each and every 2N3055) connected for push-pull operation. Use suitable heat-sinks for transistors T5 via T8.

A 230V AC primary to 12V-0-12V, 4.5A secondary transformer (X1) is utilised. The centre-tapped terminal of the secondary of the transformer is connected to the battery (12V, 7Ah), whilst the other two terminals of the secondary are connected to the collectors of power transistors T7 and T8, respectively.

Whenever you power the circuit making use of switch S1, transformer X1 produces 230V AC at its primary terminal. This voltage could be employed to heat your soldering iron.

Build the circuit on a standard purpose PCB and place it in a suitable cabinet. Hook up the battery and transformer with proper current-carrying wires. On the front panel of the box, fit power switch S1 along with a 3-pin socket for connecting the soldering iron.

Note that the ratings of the battery, transistors T7 and T8, and transformer could vary as these all depend on the load (soldering iron).

Download the circuit in pdf document HERE

100W 12VDC to 220VAC Inverter with MOSFET IRF540

2011-06-06T04:17:00.000-07:00

The following inverter circuit is using MOSFET transistor IRF540 instead of ordinary transistor (eq 2N3055). FET is better than ordinary transistor in both stability and responsibility.

The circuit uses 4047 IC and IRF540 MOSFET instead of 2N3055 transistor. You'll need a 2-3A center tapped transformer to handle/supply 100W load.

1100W Cheap Power Inverter 12VDC to 110VAC

2011-05-30T16:34:00.000-07:00

Manufactured by PowerBright. This 1100 power inverter only sell at 84.90 USD. This power inverter has excelent review from its user.

A power inverter convert DC battery power into conventional AC power which can run all kinds of personal electronics and mobile office equipment such as Laptops, Gaming Consoles (PS3, XBOX 360) MP3 Players, Cell Phone Chargers, DVD Players and more!

1100W Power Inverter Product Features:

1100 watts continuous power
2200 watts peak power
Anodized aluminum case provides durability
Built-in Cooling Fan
3 FT Battery Cables

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Power Bright 6000W Power Inverter 12VDC to 110VAC

2011-05-27T16:21:00.000-07:00

Get all positive reviews, this 6000W power inverter is great choice for you if you want to buy an inverter. This heavy duty inverter plugs directly to a 12 Volt DC battery to power large appliances, air conditioners, heavy duty power tools and many other electronics in your vehicle.

Product Features

6000 watts continuous power
12000 watts peak power
Anodized aluminum case provides durability
Built-in Cooling Fan
Heavy Duty

This Power Inverter available at Amazon.
BUY THIS INVERTER at Amazon.com

100W DC Inverter Circuit 12VDC to 220VAC with IC 4047 and Transistor 2N3055

2011-05-02T01:17:00.000-07:00

This is another inverter circuit which will convert the Direct Current of 12V to become an Alternating Current of 220V. This inverter using famous CMOS IC of 4047 as a multivibrator and power transistor of 2N3055 to amplify the power.

Schematic diagram:

PCB Layout:

100W DC Inverter Circuit 12VDC to 220VAC with IC 4047 and Transistor 2N3055.
Source: http://www.eleccircuit.com/inverter-100w-by-ic-4047-2n3055-with-pcb/

Small DC Inverter 12VDC to 220VAC

2011-04-29T01:04:00.000-07:00

The CMOS 4047 is the main component of this converter circuit, which converts a 12V DC voltage to 220V AC voltage. 4047 act as a astable multivibrator. At pin 10 and 11 we find a rectangular symmetrically signal which is amplified by two Darlington transistors (T1 and T2) of BD699 and finally reaches the secondary coil of a transformer network (2 x 10V/60VA). Primary coil terminals voltage is 220 alternative voltage. To get a better performance of inverter, use a toroidal core transformer with reduced losses. With P1 the output frequency can be regulated between certain limits (50 to 400Hz).

Small DC Inverter 12VDC to 220VAC Source: http://apowersupply.com/converter-12v-dc-220v-ac-59.html

DC Inverter 300W / 12VDC to 220VAC

2011-04-25T23:40:00.000-07:00

This is a DC inverter diagram which use NE555 as frequency generator and many 2N3055 transistor to boost the power before forwarded to the transformers to increase the voltage.

Schematic diagram:

This inverter circuit is quite difficult to build, I think this circuit is recommended for electronic hobbysts with intermediate and advanced skills.

Transistored DC Inverter 100W 12VDC to 220VAC

2011-04-25T22:56:00.000-07:00

This is a 100W DC inverter, convert 12V DC voltage and increase the voltage to become about 220V AC. This circuit available in kits, so this kit should be work well.

Inverter Schematic:

Inverter PCB Layout:

Transistored DC Inverter 100W 12VDC to 220VAC source: http://www.eleccircuit.com/inverter-12v-to-220v-100w-transistor/

3000W Power Inverter Circuit 12VDC to 230VAC

2011-04-23T15:16:00.000-07:00

Parts list:

R1,R2,R31,R32 = 470k
R3,R10,R12,R18,R30,R36,R37,R38 = 100k
R4,R16 = Poti 50k
R5,R19 = 68k
R6 = 22 k
R7,R11,R13,R29 = 10k
R8,R22 = 2,2 k
R9,R15,R27,R28,R39 = 1M
R14 = 47k
R17 = 3,3M
R20 = 0,001 (see construction plan)
R21,R45 ... R64 = 100 Ohm
R23,R40,R41 = 1k
R24 = 150 Ohm

R33 = 0,1 Ohm / 17 Watt for 3000 Watt output max.
R34,R42 = 150 k
R35 = 470 Ohm
R43 = 4,7k / 0,5 Watt
R25,R26 = 10 Ohm
R44,R45,R46,R47 = 22 Ohm

C1 = 47nF (no ceramic capacitor - frequency stability!)
C2 = obsolete
C3,C25 = 4,7uF
C4,C9,C11,C24,C26 = 0,1uF
C5 = 10000 uF
C6,C7,C10,C14,C23 = 220uF
C8,C12,C20,C22 = 100uF/16Volt
C13 = 220uF/35 V (max. 25 Volt through charge pump)
C15,C16 = 47uF
C17,C18 = 10nF
C19,C21 = 1nF

D1,D2,D3,D5,D6,D9,D14,D15,D16,D18,D20 = 1N 4148
D4 = ZPD 12
D7 = ZPD 5,6
D17,D19 = ZPD 10
D8,D10,D11,D12,D13 = 1N 4001

IC1,IC9,IC10 = TL081
IC2 = CA3130E
IC12,IC13 = LM741
IC3,IC4,IC5,IC6 = 1 x 4093
IC7,IC8 = 1 x 4013
IC11 = 7812

T1,T4 = BCY59 or BC547 (T1 affects the pulse width regulator and thus voltage regulation!)
T2,T3,T11 = BCY79 or BC556
T5,T8,T10 = BS 250 (IRF9Z24N)
T6,T7,T9,T12 = 2 N 7000 (IRFZ24N)
T13... T28 = 16 x IRF 3205

LED1 red, overload protection
LED2 yellow, load detection

Tr1 = 3000 VA
Tr2 = small transformer 1 VA, 230V/6V

F1 = 250 A (100 Amperes for 1000 Watts output)
F2 = 75 degree celsius switch off

Relay1 = 12 V coil, 2 contacts

1 heat sink 200mm x 100 mm

PCB Layout:

Component Placement:

Technical Data:

Supply voltage: 12 Volt
Battery size: depending upon load, otherwise no restriction
Output voltage: 230 Volts rms (square wave voltage with duty cycle Tp=25% "modified sine")
Good for resistive, inductive and "pseudocapacitive" load (e.g. computers)
Efficiency: under full load approx. 95%
Quiescent current of control electronics: approx.. 0.05 A ... 0.1 A
Total: 0.5A to 2,5 A, depending upon quality and max. induction of the used transformer
Pulse width regulation for the stabilization of rms of the output voltage
Current limiter in case of short-circuit an thermal protection
Option: load detection

This 3000W inverter is suitable for:

Electric drills, fret saws, circular saws, electric chain saws, grinders
Vacuum cleaners, coffee machines, irons, dryers, mixers, sewing machines, electric razors, etc.
Lamps, energy-savings lamps
Electronic devices, e.g. music amplifiers, battery chargers
Computers and accessories, UPS
Televisions and radios
Ham radio transmitters, high voltage generators, among other things

Complete circuit description, visit this page

250W MOSFET Inverter circuit

2010-12-27T13:56:00.000-08:00

Here the 250W power inverter schematic diagram which use MOSFETs as AC voltage signal amplifier.

How the 250W MOSFET Inverter circuit work:

The IC1 is a 555 timer which will generate a 120-Hz signal. The signal is fed to a CD4013BE flip-flop (IC1-a), which divides the input frequency by two to generate a 60-Hz clocking frequency for the FET array (Q1 through Q6). Transformer T1 is a 12-/24-V center-tapped 60-Hz transformer of suitable size.

Power Bright 12 VDC to 110 VAC, 1100 Watt Power Inverter

2010-12-19T00:55:00.000-08:00

This product is an assembled 12V DC to 10VAC 1100 Watt Power Inverter. This inverter plugs directly to a 12 Volt DC battery to power laptops, televisions, gaming consoles and other electronics and small appliances in your vehicle.

Product Features

1100 watts continuous power
2200 watts peak power
Anodized aluminum case provides durability
Built-in Cooling Fan
3 FT Battery Cables

This product available at amazon.com. Buy the this inverter

Peak 12VDC to 110VAC 3000 Watt Power Inverter

2010-11-23T20:33:00.000-08:00

This inverter vill converts 12V DC Vehicle Power to AC Household Power at 110/12oV AC. Power output up to 3000 Watt.

Product Features

Two 110/120 Volt AC Outlets
Battery Connection Cables Included
Power On/Off Switch with Fault and Power LED's
Short Circuit Protection; Low Battery Shut Down
High/Low Voltage Protection

Buy this 3000W power inverter at Amazon.com

Sima 3000 Watt Power Inverter

2010-11-23T06:33:00.001-08:00

This is the assembled 3000W power inverter from Simo manufacture. It comes with heavy duty wires (Huge, bigger than the starter wire) and a fuse (200A) to connect to a battery. But a big inverter like this will pull a lot of amps (currents) on the 12 volt side.

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Xantrex XPower 3000 Watt Inverter

2010-11-22T18:04:00.000-08:00

If you need a lot of watts, this is a great unit to go with.

Xantrex XPower 3000 Watt high power Inverter is a way, convenient and reliable for converting direct current into alternating current 115 volt household. The unit is ideal for long distance drivers who need to power home appliances, consumer electronics, or office equipment on board their vehicle. They are also suitable for small contractors, electrical tools in their van or pick-ups, and recreational users such as RV or automobile owners. This high-power inverter converts almost all AC battery. It includes tow ground tanks dedicated 15 amp circuit breaker, and a built-in alarms and warnings of overheating and low voltage indication. It also includes a built-in overload and high temperatures. The unit is easy to use, easy to read digital display indicates DC battery power. It's also easy to install, heavy stud fasteners and connectors.

Product Features

3000-watt inverter for converting DC to 115-volt AC power
Power electronic gear and appliances while on the road
Conveniently plugs into car cigarette lighter
Easy-to-read digital display indicates battery output

BUY THIS INVERTER at Amazon.com

5W Inverter circuit

2010-11-16T22:30:00.000-08:00

The following schematic diagram is a very simple inverter circuit that will convert DC current (from battery) into AC current, from 12V DC to 220V AC with output power of about 5 Watt.

This inverter circuit is generally used for emergency lighting, because the energy is low, representing only about 5W. But you can use this converter for other purposes that do not require large electric power such as mobile phone charger.

1000W Inverter Circuit with MOSFET

2010-10-23T00:30:00.000-07:00

The following diagram is the 1000W power inverter circuit which use MOSFETs to gain the power before it passed to the transformer. This power inverter circuit will provide a very stable “Square Wave” Output Voltage. Frequency of operation is determined by a pot and is normally set to 60 Hz. Various “off the shelf” transformers can be used. Or Custom wind your own for best results.

Additional MOSFET can be paralleled for higher power. It is recommended to Have a “Fuse” in the Power Line and to always have a “Load connected”, while power is being applied. The Fuse should be rated at 32 volts and should be aproximately 10 Amps per 100 watts of output.

Schematic diagram:

PCB layout:

The Power leads must be heavy enough wire to handle this High Current Draw! appropriate Heat Sinks Should be used on the RFP50N06 Fets. These Fets are rated at 50 Amps and 60 Volts. Other types of MOSFETS can be substituted if you wish.

Notes:
There ARE Limitations! I have had numerous requests for an Inverter for 1000 watts and Even MORE. Sorry I Don’t feel this is Practical. At 1000 Watts and operating from a 12 Volt Source, the Input Current will be close to 100 AMPS. That would Require a HUGH Size of a Primary Wire. The diagram source: http://www3.telus.net/chemelec/Projects/Inverter/Mosfet-Inverter.htm

25W, 12VDC to 115VAC Low Power Inverter circuit

2010-01-15T19:25:00.000-08:00

This inverter circuit will convert 10-16V DC into 115V AC / 60Hz square wave power. This circuit will able to operate AC devices up to 25W.

Continue reading about this 25W Low Power Inverter »

5000W Assembled Power Inverter

2009-12-19T19:42:00.000-08:00

Need a 500o Watt Inverter..? Here I find 5000W assembled inverter for your needs.
This inverter will convert 24VDC become 110/220VAC.

Inverter Specification:
Continuous Power (W): 5000
Surge Capability (W): 10000
Wave Form: : modified sine wave
Operating Voltage: (21v+-0.6v)-(31+-0.6v)
Rated Input Voltage (DC): 25.6v-26.4v
Rated Output Voltage (AC): 210v-230v/100-120v
Output Frequency: 48HZ-52HZ/58-62Hz
Conversion Efficiency (On Rated Valtage Condition): not less than 85%
Static Current (On Rated Valtage Condition): 0.5A
Low Input Voltage Warning: 20.4v-21.6v
Low Input Voltage Shut Off: 18.4v-19.6v
Over Input Voltage Shut Off: 30v-33v
Automatic Recover Voltage: 23.4v-25.6v
Over Temperature Protection: 60-70
AC Short Circuit Protection (Tested During Output): yes & (not damage the circuit)
DC Reverse Polatity Protection: yes & (need new fuse altering)
Working Temperature: 0-40
Housing Color: Black or Argentate
AC Receptacle/Outlet/Socket: Universal

Visit this page

Xantrex 175W Micro Inverter

2009-11-01T04:43:00.000-08:00

Xantrex 175W Micro Inverter Technical Details:

175 watt inverter for converting DC to AC power
Power electronic gear and appliances while on the road
Conveniently plugs into car cigarette lighter
Auto-shutdown protects against overcharge, overheating

This compact and lightweight Xantrex inverter transforms your vehicle's electricity so you can power your electronic devices while on the road.

BUY THIS INVERTER at Amazon.com

Best Mosfet Inverter circuit

2009-10-22T07:23:00.000-07:00

This inveter is great and this inverter is really work too... Visit the original author's page here.

This circuit will provide a very stable "Square Wave" output voltage. Frequency of operation is determined by a pot and is normally set to 60 Hz.

Various "off the shelf" transformers can be used. Or custom wind your own FOR BEST RESULTS. Additional MosFets can be paralleled for higher power.

It is recommended to have a "fuse" in the power line and to always have a "load connected", while power is being applied.

The Fuse should be rated at 32 volts and should be aproximately 10 Amps per 100 watts of output. The power leads must be heavy enough wire to handle this high current draw!

Appropriate Heat Sinks should be used on the RFP50N06 Fets. These Fets are rated at 50 Amps and 60 Volts.
** Other types of Mosfets can be substituted if you wish.

Xantrex Technologies 400W Inverter

2009-10-22T07:07:00.000-07:00

This is a cool inverter which able to handle up to 400W output loads.

400W Inverter Technical Details

400-watt inverter for converting DC to AC power
Power electronic gear and appliances while on the road
Conveniently plugs into car cigarette lighter
Automatically detects low-vehicle battery to avoid depletion

Buy this Inverter at amazon.com

500W Inverter circuit 12VDC to 240VAC with TIP35C

2009-10-11T04:04:00.000-07:00

Powered with 12 transistors TIP35C, this inverter will be able to handle up to 500W load at 240V AC. This circuit will strong enough to supply a computer set.

Part list:

2 Resisters 470 Ohm ¼ Watt
3 Resisters 22 Ohm 1 Watt
1 Variable resister 10K
1 Capacitor1uf
1 Capacitor 220uf
1 Zener diode 8.2V
1 IC CD4047
1 IC 7809
1 Transformer 12+12/240 (500W)
2 Transistors D313
12 Power Transistors TIP35C (make two pairs of 6 transistors each connected in parallel)
2 Heat sinks to fit power transistors
Some wiring wire (for connections)
A wiro-board (To build circuit on)
A 12V battery of 12V power supply for testing purposes

More explanation about this inverter circuit, go to the original post here:
http://www.researchcell.com/energy/inverter-circuit-diagram/

12V DC to 120/230V AC Inverter circuit with IC 555

2009-10-03T01:57:00.000-07:00

This is a DC-to-AC inverter circuit diagram which produces an AC output at line frequency and voltage. The 555 is configured as a low-frequency oscillator, tunable over the frequency range of 50 to 60 Hz by Frequency potentiometer R4.


Parts List:
R1_________ 10K
R2_________ 100K
R3_________ 100 ohm
R4_________ 50K potmeter, Linear
C1,C2______ 0.1uF
C3_________ 0.01uF
C4_________ 2700uF
Q1_________ TIP41A, NPN, or equivalent
Q2_________ TIP42A, PNP, or equivalent
L1_________ 1uH
T1_________ Filament transformer, your choice

The 555 feeds its output (amplified by Q1 and Q2) to the input of transformer T1, a reverse-connected filament transformer with the necessary step-up turns ratio. Capacitor C4 and coil L1 filter the input to T1, assuring that it is effectively a sine wave. Adjust the value of T1 to your voltage.

The output (in watts) is up to you by selecting different components.

Input voltage is anywhere from +5V to +15Volt DC, adjust the 2700uF cap's working voltage accordingly.

Replacement types for Q1 are: TIP41B, TIP41C, NTE196, ECG196, etc. Replacement types for Q2 are: TIP42B, TIP42C, NTE197, ECG197, etc. Don't be afraid to use another type of similar specs, it's only a transistor... ;-)

Use proper transformer. If you load electronic device which require 120V AC, then use transformer with 120V in output.

500W Inverter circuit 12V AC to 220V DC

2009-09-26T18:55:00.000-07:00

This is an inverter circuit which able to convert the 12V DC in to the 220V AC. In this circuit 4047 is use to generate the square wave of 50hz and amplify the current and then amplify the voltage by using the step transformer.

How to calculate transformer rating

The basic formula is P=VI and between input output of the transformer we have Power input = Power output

For example if we want a 220W output at 220V then we need 1A at the output. Then at the input we must have at least 18.3V at 12V because: 12V*18.3 = 220v*1

So you have to wind the step up transformer 12v to 220v but input winding must be capable to bear 20A.

12V DC to 220V AC / 50W Inverter

2009-09-20T18:56:00.000-07:00

This inverter circuit will convert 12V DC to 220V AC with output loads up to 50W. This circuit will be great for small electronic device.

Schematic diagram:

Parts list:

R1=10Mohms
R2=100ohms
R3=1.2Kohms
R4=560Kohms
R5-6=2.2Kohms
R7-8=56 ohms 5W
CX=22pF trimmed capacitor
C1-2=22pF ceramic
C3=8.2nF 100V MKT

C4=10uF 16V
C5=47uF 16V
C6=470nF 400V
D1=5V6 0.4W
D2-3=47V 1W
Q1-2=BS170
Q3-4=BD139
Q5-6=BD249
IC1=4060

IC2=4013
IC3=4047
CR1=3.2768 MHZ crystal
T1=220Vac/2X10V 2X2.2A
F1=5A Fuse
F2=0.25A Fuse
L1=1H smoothing choke

Full explanation include the schematic diagram, component list, PCB layout and Component placement, you can download here or visit this page

12V DC to 230V AC / 60W Inverter

2009-09-20T18:44:00.000-07:00

This is a transistorised inverter circuit capable of driving medium loads of the order of 40 to 60 watts using battery of 12V, 15 Ah or higher capacity. This inverter will convert 12V DC input to become 230V AC in output.

Transistors T1 and T2 (BC548) form a 50Hz multivibrator. For obtaining correct frequency, the values of resistors R3 and R4 may have to be changed after testing. The complementary outputs from collectors of transistors T1 and T2 are given to PNP darlington driver stages formed by transistor pairs T3-T4 and T6-T7 (utilising transistors BD140 and 2N6107). The outputs from the drivers are fed to transistors T5 and T8 (2N3055) connected for push-pull operation.

Somewhat higher wattage can be achieved by increasing the drive to 2N3055 transistors (by lowering the value of resistors R7 and R8 while increasing their wattage). Suitable heatsinks may be used for the output stage transistors. Transformer X1 is a 230V primary to 9V-0-9V, 10A secondary used in reverse.

You can download explanation of 12V DC to 230V AC / 60W Inverter here

Simple High Power Inverter Circuit 12VDC to 80-130VAC, 50-150 Watt

2009-08-23T08:17:00.000-07:00

This is simple inverter which will give you high power output. The output power and voltage is depended on the transformer used as descriped on the picture.

source

25W Power Inverter circuit 10-16VAC to 115VDC

2009-08-16T02:38:00.000-07:00

This low-power inverter uses only 9 parts and turn 10 to 16VDC into 60Hz, 115V square-wave power to operate AC equipment up to 25W. The first section of the 556 timer chip is wired as an astable oscillator with R2 and C1 setting the frequency. The output is available at pin 9. Resistor R3 and R4 keep output transistors Q1 and Q2 from loading down the oscillator. The two transistors drive the transformer push-pull fashion. When one transistor is biased-on, the other is cut-off. The transformer is a 120V / 18VCT unit that is connected backward, so that is steps the voltage up rather than down. Oscillator circuit U1, R1, R2 and C1 operates from about 4 to 16V with a very stable output.

Inverter: Theory and Practice

2009-08-12T01:45:00.000-07:00

In this tutorial, you will learn the basic theory of inverter. How the inverter works and how to build an inverter. There is inverter circuit diagram you could be try there..

Download the inverter tutorial here

300W Inverter Circuit 24VDC to 220VAC

2009-08-05T18:54:00.000-07:00

This is a 300 watt inverter circuit which will convert 24VDC input to 220V AC output.

Schematic diagram:

Top and bottom PCB layout:

12V DC to 240V DC Inverter circuit

2009-07-31T19:48:00.000-07:00

This inverter circuit can be used for small electronic appliance such as power electric razors, stroboscopes and flash tubes, and small fluorescent lamps from a 12 volt car battery. In contrast to the usual feedback oscillator type of inverter, the oscillator of this inverter is separate from the output stage, which allows easy adjustment of the oscillator frequency to suit different applications.

Download the full explanation about this circuit:

Download link

Source: circuitdiagram.net

500W 12VDC to 220VAC Power Inverter

2009-07-24T03:40:00.000-07:00

This is 500W power inverter circuit which able to convert 12V DC to 220V AC. There are 10 power transistor 2N3055 to amplify the voltage with wave frequency 50Hz/60Hz (AC) at 12V AC. You need Tap Transformer to stepping up the AC voltage. The transformer is about 2-3A.

Designed by: Syed Ashad Mustafa Younus
Revised by: Ronnie B. Tabanao

Click the image to get bigger size of schematic diagram and then save the image... or download the circuit diagram from here

40W Inverter 12VAC to 110/220VDC

2009-07-17T19:46:00.000-07:00

This is 20W-40 watt inverter circuit. CD4047 works as multivibrator to generete a waveform. Transistors BC 337 & TIP 3055 is used as complementary symmetry amplifier to amplify the waveform voltage level.

12VDC to 220VAC 100 Watt Inverter

2009-07-12T19:16:00.000-07:00

12VDC to 220VAC 100 Watt inverter circuit:

Notes:

A 12 V car battery can be used as the 12V source.
Use the POT R1 to set the output frequency to50Hz.
For the transformer get a 9-0-9 V , 10A step down transformer.But here the 9-0-9 V winding will be the primary and 220V winding will be the secondary.
If you could not get a 10A rated transformer , don’t worry a 5A one will be just enough. But the allowed out put power will be reduced to 60W.
Use a 10 A fuse in series with the battery as shown in circuit.
Mount the IC on an IC holder.
Remember,this circuit is nothing when compared to advanced PWM inverters.This is a low cost circuit meant for low scale applications.

Power Inverter With MOSFET

2009-07-12T17:41:00.000-07:00

This is 12VDC to 120V/220VAC inverter circuit. The inverter use a pair of RFP50N60 MOSFET.

12VDC to 120VAC 15W Inverter

2009-07-11T17:48:00.000-07:00

This is 12VDC to 120VAC 15W inverter circuit diagram.

The output of this circuit is a square wave so there may be some noticeable hum on audio units plugged into it. To reduce some of the hum increase the value of the output capacitor (.47uf capacitor). The transistor in the circuit are high power PNP transistors, use TIP32 or another similiar transistor. The transformer is a 24 volt 2 amp center tapped secondary.

500 Watt Inverter 12-48VDC to 220VAC

2009-07-10T20:46:00.000-07:00

Here the schematic diagram for 500 watt inverter. Input voltage range is12v to 48v DC and the output will be 220V AC. Assemble and try the circuit carefully since it will generate high output voltage.

The inverter is based IRFP260 to power up the signal from the multivibrator modulegenerated by components around T1 and T2.

Visit this page for detailed explanation