High to All. I build Class D power amplifier based on IRF reference design. And I use swithcmode power supply with it. But I have a serious problem: this is beats beetwen power supply and amplifier. Any have a answer on my problem?
With Bets Regards Alex.
With Bets Regards Alex.
Try a different smps - I have a wall-wart one from Maplin that generates audible noise, and one with a fault which switches on and off approx. once per second when under any serious loading, yet others work OK.
HI
I also build a class-d amp with SMPS , but not finish yet!
do you using soft-start?
doesn't it work for solve the beat sond ??
do you the beat sound in turn off power ??
i use a triangle prototype , not self-osc type.
maybe you can use power soft-start to solve.
I never build a self-osc class-d , so i don't really know all waveform about self-osc .
I maybe will add a RELAY to solve the problem.
because i got the problem , too.
I also build a class-d amp with SMPS , but not finish yet!
do you using soft-start?
doesn't it work for solve the beat sond ??
do you the beat sound in turn off power ??
i use a triangle prototype , not self-osc type.
maybe you can use power soft-start to solve.
I never build a self-osc class-d , so i don't really know all waveform about self-osc .
I maybe will add a RELAY to solve the problem.
because i got the problem , too.
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