francis29
Member level 5
How to choose the optocoupler for feed back for a flyback converter. Is it necessary to use TL431 with optocoupler (As i have seen in almost all flyback power supply)
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My question is why we have to connect the TL341 to cathode of optocoupler (input) and connect the reference pin of TL431 to a voltage divider of 2.5Volts