This modified square wave inverter can be used to convert 12 or 24V DC to 240V AC, 120V AC or any other voltage. Power and voltage outputs depend on transformer. Output frequency is adjustable between 50 and 60Hz and a beat indicator circuit is included (LED) so you can easily adjust the frequency to be the same as the mains frequency. With one pair (supplied) of mosfets and no additional heatsinks 100W power output is possible. 200W with two pairs (addtional pair of mosfets an option) of mosfets and no additional heatsinks. 400W and higher with two pairs of mosfets and additional heatsinks. 

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