Re: M-audio AV30 speakers recap and repair
Well, I went with the maximum written on the picture, 14v ac @ 0.8A.
Actually, i forgot something. The peak DC current will be about 0.62 x 0.8A = 0.5A , because you can't magically make 19v @ 0.8A from 14v AC @ 0.8A without any losses. So if you assume that 0.8A transformer current is correct, redo the math assuming the maximum output DC current to about 0.5-0.6A, not 0.8A.
You can always put a multimeter in series with the regulator and push the volume to the max and measure the peak current, then put a suitable heatsink.
ps. I went back and edited the previous posts to take account of 0.5A peak DC current, if we assume a 0.8A AC current.
Well, I went with the maximum written on the picture, 14v ac @ 0.8A.
Actually, i forgot something. The peak DC current will be about 0.62 x 0.8A = 0.5A , because you can't magically make 19v @ 0.8A from 14v AC @ 0.8A without any losses. So if you assume that 0.8A transformer current is correct, redo the math assuming the maximum output DC current to about 0.5-0.6A, not 0.8A.
You can always put a multimeter in series with the regulator and push the volume to the max and measure the peak current, then put a suitable heatsink.
ps. I went back and edited the previous posts to take account of 0.5A peak DC current, if we assume a 0.8A AC current.
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