Transformer output problem

1903644155

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Dear seniors: For a transformer with multiple outputs, some output voltages are stable, while others drop at a rate of about 10mv/s. Please guide me on how to adjust the output circuit. Thank you!

maychang

"For transformers with multiple outputs, some output voltages are stable, while others drop at a rate of about 10mv/s." Are you talking about the DC voltage output after secondary rectification and filtering of the transformer?

1903644155

maychang posted on 2018-3-9 11:14 "For transformers with multiple outputs, some have stable output voltages, while others have output voltages that drop at a rate of about 10mv/s." Are you talking about the transformer secondary...

Yes, that is the DC voltage output after secondary rectification and filtering.

maychang

1903644155 Published on 2018-3-9 11:58 Yes, it is the DC voltage output after the secondary rectification and filtering

Then I have to continue to ask: Is your transformer an industrial frequency transformer (primary connected to the mains) or a transformer in a switching power supply (primary connected to the switching power tube)? It is best to describe all the situations clearly at once (for example, is the switching power supply a forward, flyback or half-bridge, is the output with the gradually decreasing voltage connected to the load? etc.), and it is best to attach a picture, otherwise it is difficult to guess the reason why your "some output voltages" are gradually decreasing.

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