900W H-class PA Amp with Limiter

TD CLASS 1800 MY WORK now corrected

there were some small faults in earlier posted designs, now corrected
 

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Pcb has arrived.Test soon.
 

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  • IMG_20190705_180332.jpg
    IMG_20190705_180332.jpg
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It does not work properly.The oscillation frequency is too low (about 50 kHz) and I tried to raise it up but not successfully.I've changed different values ​​to coils from 5uh to 200-300uh without success.Has anyone done it to show us the conclusions he came to?
 

Attachments

  • IMG_20190719_110621.jpg
    IMG_20190719_110621.jpg
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It does not work properly.The oscillation frequency is too low (about 50 kHz) and I tried to raise it up but not successfully.I've changed different values ​​to coils from 5uh to 200-300uh without success.Has anyone done it to show us the conclusions he came to?

It does work properly. TD1800 is subwoofer amplifier.
 

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  • 66819996_1464997506976178_7193772412062662656_n.jpg
    66819996_1464997506976178_7193772412062662656_n.jpg
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