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In Reply to: rectifier voltage rating ?? posted by kalido on November 15, 2004 at 09:12:14:
Does the voltage rating specifies the rectified voltage output from the rectifier ??
> NO,its name is peak inverse voltage (PIV)
I understand that the ratings are actually the reverse breakdown voltage , so does this specifies the rectified voltage ??
> NO, again
My int amp presents a 55v of rectified voltage ?? So must i pick a diode which rates at 150-200V ??
> Better be safe than sorry, 200 V will last forever. 4 times the PS voltage is a good rule-of-thumb.What bout the current rating, would it be better to use a high-current one such as 16A but 100v diode compared to a 1.1A but 200V diode ??
NO, diodes will fail during power-on if the peak inverse voltage is exceeded. Your priority is the voltage spec. A slight over-rating of the current spec will yield a cooler-running diode, that's all.
I have heard (but have no proof) that 10A diodes generate more noise than 1 A diodes.
Good luck
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Follow Ups
- Re: rectifier voltage rating ?? - Carlos 11/25/0418:04:31 11/25/04 (0)