EEVblog Electronics Community Forum
Electronics => Beginners => Topic started by: Mp3 on August 03, 2021, 08:15:05 am
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This is not related to my past thread about rectifier diodes.
Diagnosing a power supply with some old electrolytics, which i desoldered then discharged and tested. Surprisingly low ESR and a bit above stated capacitance, no sign of leakage, so I think they're ok.
This power supply has rectifier diodes coming from the AC transformer, into regulators and capacitors, and then all capacitors thru rectifier diodes, to the main board of the computer.
I have had it hooked up for a while after replacing the bad rectifier diode, and nothing is pulling too much current, but i didn't measure any sort of ripple on the power supply. Would excessive ripple possibly cause a rectifier diode to fail?
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Would excessive ripple possibly cause a rectifier diode to fail?
No, but a failed diode could possibly cause excessive ripple.