Weird inverter problem

**zanor** · 05-07-2006, 01:55 PM

Bought myself an 150W inverter last week.
But when I connect a ATX-power supply to it, it begins to tick like an relay is beeing operated and no ouput voltage. It works fine with lamps, glue-gun ....
This happens regardless if the atx supply is 70w - 350w.
But on one of my supply's, a 150W one. It ticks for 5-10sec and then turn on.

Anybody knows anything about my problem?

BTW, this happens regardless if the ATX supply is connected when I switch on the inverter or if I connect it afterwards.

**zanor** · 05-07-2006, 03:04 PM

Done some more testing now.
Opened my inverter and it is the beep'er that's making the ticking sound. The beep'er only gets power in 1 nano sec or something so it just tick's instead of beep.

I also tried my brand new 350w atx supply and this works. I hear 1 tick before the inverter gives power but that way better than the old atx supplys I've tried so far. But now my inverter(yes, my inverter and not my atx supply

) makes this buzzing sound.
Is there a way around this?

**didiet78** · 05-09-2006, 05:28 AM

Buy another inverter ?

Just curius, that inverter square wave, modified square or pure sine wave?

**zanor** · 05-09-2006, 06:17 AM

Originally Posted by didiet78

Buy another inverter ?

Just curius, that inverter square wave, modified square or pure sine wave?

No, the next thing now is an DC-DC supply!

It stands "Modified sine wave" on the back of it.

**Jahntassa** · 05-09-2006, 07:39 AM

That 150w inverter isn't really good for much, maybe a small laptop.

Try getting something bigger if you stay the inverter route.

**Scouse Monkey** · 05-09-2006, 07:40 AM

the noise is due to the inverter being overloaded. You need to use an inverter rated about 25-30% higher than your PSUs rating. Even if you are drawing that much it just does not work right in some situations.