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
About Inverter
An inverter is an power electronic device that converts direct current (DC) to alternating current (AC); the converted AC can be at any required voltage and frequency with the use of appropriate transformers, switching, and control circuits. Solid-state inverters have no moving parts and are used in a wide range of applications, from small switching power supplies in computers, to large electric utility high-voltage direct current applications that transport bulk power. Inverters are usually used to supply AC power from DC sources such as solar panels or batteries. It will be useful for emergency electric source
An inverter is an power electronic device that converts direct current (DC) to alternating current (AC); the converted AC can be at any required voltage and frequency with the use of appropriate transformers, switching, and control circuits. Solid-state inverters have no moving parts and are used in a wide range of applications, from small switching power supplies in computers, to large electric utility high-voltage direct current applications that transport bulk power. Inverters are usually used to supply AC power from DC sources such as solar panels or batteries. It will be useful for emergency electric source
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