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In the Forum: Audio Discussions
In the Thread: It’s mad, mad, mad... electricity.
Post Subject: EditPosted by N-set on: 11/25/2020
 - The noise has two phases - large noise and steady state noise. Large one ocures when the PP is switched offline and then switched on. This noise depends on the input (SUT or MM) and the orientation Signal enclosure vs power supply
- When the battery is fully charged, what remains is the steady state noise - much smaller. It doesn't seem to react to anything.
- Lifting the ground (disconnecting the signal ground from the chassis) has no effect

The only conditions so far to suppress the 100Hz noise are:
- Switching PP to the battery mode
- Disconnecting phono ground from the PP ground



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