need to clear about voltage of diode rectifier for psu - diyAudio
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Old 16th July 2010, 07:01 PM   #1
mdm102 is offline mdm102  Russian Federation
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Default need to clear about voltage of diode rectifier for psu

Hi guys!

Can anyone clear about voltage rating of diode? I want to make bridge rectifier using Vishay's 60EPU02, it seems that this one is very good for audio and also I can grab these for a pretty good price, but I doubt in one parameter - voltage rating of this diode is only 200, is it still ok for my psu? or I need more 400 or 600?
I will use 50-0-50 500VA transformer with C filter.

Thanks to all!

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Old 16th July 2010, 10:18 PM   #2
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200 volts is perfectly fine. Your transformer is 2x 50v AC RMS thus 141.4 volts peak. That's still quite a bit under 200v. If your trafo were 2x 70v or higher it would require 400v diodes, but like it is now you'll be fine.
"Audio grade" components simply means that they failed at a more critical job.
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Old 17th July 2010, 09:17 AM   #3
mdm102 is offline mdm102  Russian Federation
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Thank you! I also thought so, but it seems that diode will work at its limit, because, if I understanding right, 200V is a peak rating of diode, but its RMS voltage will be 200*0.7=140, so seems it will work just near the limit.

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