Timeline for Will an isolation transformer have a noticeable effect on mains hum? Also critique my DIY transformer idea
Current License: CC BY-SA 4.0
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| May 22 at 12:44 | comment | added | Kuba hasn't forgotten Monica | The ground clip probably should stay at the ground star point, and you may want to use a differential probe anyway if unsure. Much easier to deal with than the dangers of misapplied isolation transformers. | |
| May 22 at 12:43 | comment | added | Kuba hasn't forgotten Monica | @neural The only devices where this is a real concern are switchmode power supplies. In transformer-powered audio gear, the transformer primary side is well separated from everything else and you’d be hard pressed to probe mains accidentally. Otherwise, high power audio amps have high voltages on the secondary and isolation won’t do anything there. You should be using non-switchable 10x scope probes rated for mains and then you won’t damage anything at all. DO NOT use switchable x1/x10 probes. And don’t connect ground clip to anything that’s not at earth potential. | |
| May 21 at 22:21 | comment | added | neural | It's the oscilloscope I'm worried about. If you test a device connected to mains with a scope, you can ruin the scope if you put the probes in the wrong spot. | |
| May 21 at 22:05 | history | answered | Kuba hasn't forgotten Monica | CC BY-SA 4.0 |