Power transformer interference

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cplais2
Junior tube assistant
Posts: 1
(2/21/04 10:53 pm)
 Power transformer interference
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 Is there a possibility for the power transformer to interfere with the output transformer or the circuit board if they are too close to it? Does the grounded aluminum chassis have anything to do with preventing this? Also, is a grounded cap can necessary to shield the circuitry from any interference produced by the capacitors.
 
6G6
Junior tube assistant
Posts: 91
(2/23/04 5:04 pm)
 Re: Power transformer interference
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 Yes.

The OT & the PT should be turned 90 degrees from each other and not be too close.
Anytime you have current going through a wire wrapped around a nail, bolt or in this case iron laminations, there is a magnetic feild. If the feilds overlap the signal will try to transfer from one to the other.
You want to prevent the 50 or 60 Hz AC in the PT from getting into the OT due to inductance.
 
cplais2
Posts: 2
(2/24/04 12:45 pm)
 Interference
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 Thanks 6G6.

Can the transformers or the filter caps interfere with the circuit board or the tubes?
 
Rotting27
Junior tube assistant
Posts: 122
(2/24/04 3:55 pm)
 Re: Interference
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 Any time there is current of any sort AC or DC there is the possibility of "interference". If you follow the reasonable conventions of twisting wires, shielding wires, separating and orienting transformers, chokes, etc, and as little jumbling of wires in general, you should be fine.

If you need specifics on which wires to twist, shield, isolate, etc, how to orient transformers, layout a board, etc, let us know. I'm sure you can find a lot on the rest of the posts and archives, but you may still have a few specific questions.

Hope that helps
 
 
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