Take That, Fuhjyyu!
Maybe not for a computer, but still a power supply 
12 volt to 120v power inverter heavy-up I did last year.
Cleaned up wiring, lower Rds MOSFETS, 3a fast recovery rectifiers for boosted DC bus, copper wire to parallel traces, upsized input leads from 16 to 12awg. Paralleled a resistor across current sense shunt on the high voltage side, to allow for the originally designed 150 watt continuous output.
Also got rid of the damn fuhkyoos
With the original parts, DC bus was around 162v without a load. Under a 140w load, it dropped to 156. Now I have 165v with or without a 150w load, and the unit runs MUCH cooler. It's now capable of 225 watts out, but only for brief periods- obviously the transformer won't take that continuously. The load in the pic is a 150w bulb and a small shaded pole fan.
As the bus voltage is 165, it should really be considered a ~117v inverter.
-Paul
12 volt to 120v power inverter heavy-up I did last year.
Cleaned up wiring, lower Rds MOSFETS, 3a fast recovery rectifiers for boosted DC bus, copper wire to parallel traces, upsized input leads from 16 to 12awg. Paralleled a resistor across current sense shunt on the high voltage side, to allow for the originally designed 150 watt continuous output.
Also got rid of the damn fuhkyoos
With the original parts, DC bus was around 162v without a load. Under a 140w load, it dropped to 156. Now I have 165v with or without a 150w load, and the unit runs MUCH cooler. It's now capable of 225 watts out, but only for brief periods- obviously the transformer won't take that continuously. The load in the pic is a 150w bulb and a small shaded pole fan.
As the bus voltage is 165, it should really be considered a ~117v inverter.
-Paul
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