(Topic ID: 73092)

EM Pinball causing electrical noise in mains


By nbolmer

5 years ago



Topic Stats

  • 17 posts
  • 10 Pinsiders participating
  • Latest reply 5 years ago by krivoap
  • Topic is favorited by 1 Pinsider

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#5 5 years ago

I would think a AC line conditioner should work, or perhaps an UPS?

#9 5 years ago
Quoted from nbolmer:

Ordered a line conditioner, hopefully that will help - but those are meant to protect the thing that is plugged into them, not feedback into mains. Hopefully it works that way too as a side effect.

My thinking is that it is an active circuit inside and should prevent any 'feedback' being fed back out (the output should be isolated from the input) - but on the other side, it should also take the incoming 'bad' signal and clean it up for use by your speakers. But I am just making a 'guess'.

Just a shot in the dark, I would be interested in knowing the actual results and if it helped.

edit: Just wondering if you tried a simple surge protector on the pin? I doubt that it would work, but never know.

#12 5 years ago
Quoted from newmantjn:

Canadian games used to ship (or maybe be required to have installed later?) an isolation transformer. You could try that. Maybe pull one out of an old video game and wire it up. They were also used in video games with CRTs.

All video games had an isolation transformer wether they are stand alone or built into the monitor chassis (as did a lot of older electronics) - has nothing to do with 'noise prevention' but more to do with electrical isolation as the frame of the monitor (etc.) is tied to the hot side of power (vs ground).

An isolation transformer wouldn't work as it would still transfer the 'noise' spikes back through the main windings. You need an active circuit that isolates the 2 halves - with an active circuit power would only flow in 1 direction any returning noise would be stopped. A line conditioner should do that as it takes the original power feed and breaks it down and reforms it into clean power before sending it out - it should prevent any returning noise from passing though to the main feed.

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