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Question power supply aca/boz
Question power supply aca/boz
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Old 22nd February 2019, 09:52 PM   #11
Giovanni malluzzo is offline Giovanni malluzzo
diyAudio Member
 
Join Date: Nov 2017
Unfortunately, two schottky diodes were burnt on the boz.
It happened about 15 days ago, and after replacing the diodes this morning it happened again, after about 10 days of perfect operation.
I ask you why this happened. Perhaps it may be that the schottky diodes are "weak" in the ignition pulse to charge the capacitors ??
But anyway there is a 1000uf capacitor immediately after the diodes, and then 4 1000uf capacitors after the stabilized voltage at 60V. So there is not a big capacity !!
But there is no short circuit in the PCB, so the only reason I think is that the schottky diodes are very weak at the impulse, what do you think?
(my schottky diodes are 2A / 600V)
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