Forum Discussion
ve7prt
May 24, 2013Explorer
Salvo wrote:
A couple of test questions.
1. Why 60Vac?
2. Why does the analog voltmeter read about 6V (from gnd to neutral or gnd to hot)?
Sal
Sal, it all has to do with how inverters work, particularly the cheaper ones. A bit tough to explain, but in a nutshell, when producing the AC power is creates a positive and negative voltage (think sine wave) using different parts of the circuit. Instead of trying to invert the one side to increase voltage, it's easier to connect 1 output to the hot and the other output to the neutral. Run each at 60VAC, and you get 120VAC across the outlet. Most devices won't care either, so long as what they get is 120VAC. Clear as mud? Anyway, read Inverters By Wikipedia; that could probably explain it far better than me.
For your second question, is the inverter loaded or idling? If loaded, then the meter might have an issue. If idling, the inverter may have gone into search mode (or power saving mode). This is where it puts out a small voltage so that loads can operate, yet it draws almost no power (or very little). Once a load turns on, the inverter "wakes up" and provides full voltage to the load. Your analog meter might not produce enough load to wake the inverter up.
At least, that's how I see it.
Cheers!
Mike
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