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How to measure If there I’d DC on the mains
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Author:  ratbagp [ October 12th, 2020, 5:36 pm ]
Post subject:  Re: How to measure If there I’d DC on the mains

This was interesting.

https://www.youtube.com/watch?v=sDE2uekqLsA

After I watched it I realized that if he is correct, the simple way to test would be to put a compass next to the transformer with the AC disconnected. If the needle deflects that would indicate that the core of the transformer has been magnetized by DC.

ray

Author:  Pelliott321 [ October 12th, 2020, 7:32 pm ]
Post subject:  Re: How to measure If there I’d DC on the mains

With AC going through the transformer then the magnet could never form

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