can i test a 90w inverter with a 1amp psu and my load is a 13w light 110v?

I have tested an inverter with a cable modem psu but not lighting the light, is it due to PSUs 1amp rating or simply Inverter is faulty, I don't own a car or Battery for that matter yet..

90w inverter
13w light
1 amp power supply..

Yes, an inverter converts it doesn't generate. Your load was 13W, the most the supply could give you was 12. No chance of making it work without a big enough PSU.
celalboz (author)  steveastrouk7 years ago
Hi thanks, how much amp PSU would that be?
PC ATX PSU will do or has to be like 7amp SLA at least?
+1. Try hooking up to an automobile battery. If you don't own a car or are too young, either ask a friend or your dad/mom.
I'm not sure how well an ATX supply will deal with the starting surge, but its worth a try. Pretty well any SLA will work - they have a low enough output resistance to cope with the inverter