I reckon Savu means the same as I'm going to say.
Can you show your circuit diagram with a WHITE background, not black, please.
It's a complete pain in the eyeballs to examine, as you have it.
Sandy
My software doesnt allow a white background.
I use black backgrounds because white ones give me migraine.
Here is a similar project with discrete parts,
+/-45Vdc supply, 150W RMS into 4 ohm, 250khz, 0.31% THD @ max power, 1.6W dissipated per Mos Fet.
It only exists in LTspice, I never built it.
Regards,
savu
Savu!
Amasingly simple, and it may wouldn't have blown, if D1 had a higher voltage rating. Decoupling capacitors are needed on supply rails. (I would call negative rail Vss instead of Vcc.)
I found my output filter inductor was cooking at 200 degrees C at idle.
Found the oscillator frequency to be too low at 140KHz.
Increased the speed of the oscillator to 220KHz and the inductor doesnt get so hot.
Noticed a faint whistle in the background of the audio and this was fixed with better decoupling on the IR2113 VCC rail close to the regulator.
Found the oscillator frequency to be too low at 140KHz.
Increased the speed of the oscillator to 220KHz and the inductor doesnt get so hot.
Noticed a faint whistle in the background of the audio and this was fixed with better decoupling on the IR2113 VCC rail close to the regulator.
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