audioguru Posted August 21, 2006 Report Share Posted August 21, 2006 Use 2 Mosfets and a 200W transformer for a 200W inverter.The IRF540 Mosfet is cheap and common. It can conduct a peak current of 33A. Therefore its RMS max current is 23A. It has a max on-resistance of 44 milliohms which produces a voltage drop of 1.0V. The 10V-0-10V transformer gets a loss of 1V in the Mosfets so the circuit's voltage is 9V RMS times the 23A= 207W.Modern Mosfets with a lower on-resistance and a more powerful transformer can make a more powerful inverter. Quote Link to comment Share on other sites More sharing options...
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