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Old 7th February 2006, 02:58 PM   #1
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Default Full Bridge Singles...

If I choose to use 4 Stealth diodes for a full bridge rectifier on my power supply, how many amps should they each be ideally rated for if my total peak requirement is 14-15A? I have 8, 15, and 50A pieces.
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Old 7th February 2006, 03:19 PM   #2
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If your peak is 14-15A your RMS is 9.9-10.6. They are effectively in series so each needs to handle the current. Pick whatever diode you want that can handle at least 10.6 amps.
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Old 7th February 2006, 09:41 PM   #3
RDL2004 is offline RDL2004  United States
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I think maybe you are confusing voltage and current with the RMS.

For a power supply, I would use at least 1.5 times the peak current for the rectifier diodes.

The 15 amp ones might be okay, but I would use the 50 amp ones just to be safe.

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Old 7th February 2006, 10:10 PM   #4
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Yes, just to add, the AC current will be greater than the DC current by a factor of about 1/0.62, so if your load on the rectified side is 10.6A then 15A diodes will not be enough.
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Old 8th February 2006, 05:33 PM   #5
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Default Advice taken..

I have plenty of all of them so I'll use the 50A stealth ones. Thanks for the help! I finally have all of the parts together so now here goes my building skills!!
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