| General > General Technical Chat |
| earth leakage protection in 240 volt AC inverters |
| (1/1) |
| jonovid:
I got given a box of old electronics. :-+ ;D in the box was two cheap input 12volt DC to 240 volt AC output inverters. the 300watt type used for camping or outdoors. not tested then yet. I am getting second opinion before running one. what personnel protection do we have? is it floating 240 volt AC. :scared: before I start poking around inside one. what is the case here :-// |
| james_s:
They're very simple. They consist of a boost converter that generates ~340VDC which feeds an H-bridge that turns it into an AC square wave with dead time, aka "modified sine wave". The battery powering them is itself a floating source so obviously the output of the inverter will be a floating source unless you earth it. Just plug it in and connect a lightbulb or something to the output to see if it works, they're probably fine. Usually when they do fail the problem is some bad mosfets. |
| Navigation |
| Message Index |