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Old 7th April 2009, 07:55 PM   #1
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Join Date: Feb 2009
Default Rectifying Heater Supply

Hi, My heater supply is AC which is fine but I would like to use the same tap of the transformer to provide a rectified DC signal for channel switching etc.

I was going to rectify after the input valve at the end of the AC chain but unfortunately this is on the opposite end of the chassis to where I need it. Would it make any difference for better or for worse simply taking another two wires off the beginning of the chain which is attached to a filament lamp and rectifying there?
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Old 7th April 2009, 08:18 PM   #2
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Join Date: Aug 2006
Location: Taxland, New Jersey
Your idea seems fine to me. Taking some extra power from close to the source is the correct way of doing it anyway. A small bridge rectifier, or full wave depending on your configuration, and a single filter cap should serve well. Just remember common sense things like keeping AC wires away from signal lines and twisting them close to the chassis if there is length involved.

"I regard the brain as a computer which will stop working when it's components fail. There is no heaven or afterlife for broken down computers. That is a fairy story for people afraid of the dark." ~Stephen Hawking
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Old 7th April 2009, 08:35 PM   #3
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Thanks for the clarification - makes things easier now!
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