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Old 17th October 2008, 12:39 AM   #1
Hilly-wa is offline Hilly-wa  United States
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Join Date: Feb 2005
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Default PS questions?

My power transformer runs at 120-degrees-F. Too hot? The EI stack is 1-1/2 x 3 x 3-1/2 inches. The transformer is 170-0-170 and 6.3, and I'm drawing 30 ma through each channel and less than 1 A total, for the heaters.

Second question: Can I use a 250-0-250 transformer and two SS bridges as if it were two 250-0 transformers? Center tap and one leg to left channel bridge, and same center tap and other leg to right channel bridge? Or do the two bridges form a short circuit across the transformer? If it does work, do I keep the ground legs of the bridges separate, or tie them together?

I'm never afraid to let on how little I know.

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Old 17th October 2008, 04:04 AM   #2
zigzagflux is offline zigzagflux  United States
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Join Date: Oct 2006
Location: Charlotte, NC
120 F sounds pretty cool to me. If you can keep your hand on the core, it's a cool running tranny.

Typically, I have found the ability to keep my hand on for no more than a few seconds, and get years and years of life out of them.
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Old 17th October 2008, 06:08 AM   #3
Akita is offline Akita  Malaysia
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Join Date: Dec 2006
Location: Kuala Lumpur
Answer to your second question

I dont think so, You need to seprate the 0v winding so that it is not shorted. Then only you have 2 set of winding which give you 250v-0, 250v-0.
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