50-150 Watts Power Inverter Circuit

50-150 Watts Power Inverter Circuit using 2N3055

This is the 50-150 watts power inverter circuit diagram. The inverter capable to handle output loads range of 50W to 150W, it depended to the transformer used in thisĀ  circuit design. This circuit will provide a fairly stable Square Wave output voltage. The outout frequency of operation is determined by the 220uF feedback capacitor. Currently, the output frequency is about 60 Hz.

Additional transistors can be further paralleled to obtain more higher power. Or for low power output, you may have to remove two transistor (a couple). Additionally, other NPN transistor types can be used as subtitude transistor.


Inverter, is an electronic device or circuitry that changes direct current (DC) to alternating current (AC). The input voltage, output voltage and frequency, and overall power handling depend on the design of the specific device or circuitry. The inverter does not produce any power; the power is provided by the DC source.

50-150 watts power inverter circuit source: telus.net

2 comments

    1. If uses 10A transformerless for 15 then
      You have 2,2kw power cosmusion (220V)
      For power of 150w. bad design !!!!!!!!!!
      The same is for 110V…
      1.1kw power cosmusion for 150w…
      Same bad design…

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