25W Low Power Inverter

This is 25W low power inverter which contain of only 9 parts and turn 10VDC – 16VDC into 115V / 60Hz square wave power. This circuit has capability to operate AC equipment up to 25W.

25W Low Power Inverter circuit diagram

The first section of the 555 timer is wires as an astable oscillator with R2 and C1 setting the frequency. The output is available at pin 5. The second section is wired as a phase inverter. That output is available at pin 9. Resistor R3 and R4 keep output transistor 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/18V center tapped that is connected backwards, so that is steps the voltage up rather than down. Oscillator circuit U1, R1, R2 and C1 operates from about 4 to 6V with very stable output.

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4 thoughts on “25W Low Power Inverter

  1. moshe

    hi guyz!

    i want to request from you if you could publish or share to me a circuit diagram
    for 18vdc to 110vac 50w inverter. I really need this for my project. plz can u paste this before 12h-00 tomorrow 08/06/2011 and data manual
    thanks
    regard tjabadi m

  2. ronell ong

    hi there!
    this power supply is very simple yet superb. thanks for this.
    i want to request from you if you could publish or share to me a circuit diagram
    for 12vdc to 24vdc. I really need this for my project. i have here a car battery and a solar charger, and my project is 24vdc.
    thanks
    ronell

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