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    PiC based flyback SMPS

    I took the L6565 application sheet circuit and replaced the L6565 with a PIC16f506. It basically seems to work ok with two exceptions. 1/ On high power the transformer whistles very loudly. 2/ The transformer seems to get hot. The PIC provides the mosfet pulse. It also looks at the winding for...
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    flyback smps too much ringing ?

    I have taken a l6565 circuit and replaced the l6565 with a PIC micro. On the output of the transformer I ma getting a lot of ringing. Does anyone know how to get rid of this ? http://www.ckp-railways.talktalk.net/00.jpg
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    SMPS using PIC, flyback converter.

    I have taken an L6565 circuit and used a PIC instead to generate 50KHz pulses to the transformer via a mosfet driver and mosfet. Does any one for see any problems doing this ? I forgot to gap the transformer and blew my fuses. Are there any other problems that might occurr ?
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