12 to 120 Volt Inverter Circuit
Ever needed a low power 120volt AC power source for your
car, van or truck? Well this circuit should do the trick for you. It will
supply 15 watts of AC power to a device 17317v2123r . It should power lamps, shavers, small
stereos and small appliances. If you draw to much power the circuit will shut
down all by itself. 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 which is at
.47uf now. That transistor in the circuit are high
power PNP transistors. Radio Shack part number 276-2025 are good ones to use or
TIP32. The transformer is a 24 volt 2 amp center tapped secondary Radio Shack
part number 273-1512 or equivalent.