12vdc to 220v Ac Inverter Circuits

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12vdc to 220v ac Inverter Circuits

CMOS 4047 is the main component of this small voltage converter which transforms a 12V dc into 220V ac. 4047 is used as a astable mutivibrator, at pins 10 and 11 will have a symmetrical rectangular signal wich is amplified b 2 Darlington transistors and finally reach the secondary coil of mains transformer ( 2×10V / 60VA ).
At the main coil terminals will get 220V. With the help of P1 the output frequnecy can be adjusted between 50Hz to 400Hz. Although this is not part of any professional dc ac converters it can be used quite effective on some home appliances. For more dc ac voltage converters

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