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
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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