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Old 10th February 2014, 11:51 AM   #1
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Default parallel transformers

Hi,
i have two identical transformers, both with two (same) seconderies.
what will be the preferred way to connect them to a diode bridge? in exact paralle way or every transformer will give one phase?
please take a look on the attached figure.
TX
Roi
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Old 10th February 2014, 12:33 PM   #2
jcx is online now jcx  United States
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why not dual mono?
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Old 10th February 2014, 01:37 PM   #3
DF96 is offline DF96  England
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If the two transformers really are absolutely identical then either will do.

If they are slightly different then the upper circuit may create circulating currents or force one to do all the work. The lower circuit will work fine but may give more ripple or slightly unbalanced + and - rails.

I would use the lower circuit.
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Old 10th February 2014, 01:59 PM   #4
Elvee is offline Elvee  Belgium
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This scheme will ensure the balance, even if the transformers are slightly different:
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Old 10th February 2014, 06:21 PM   #5
DF96 is offline DF96  England
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That puts them in series, but I think the OP wants parallel.
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