RE: You can normally see noise with a.....

Posted by Lew (A) on March 16, 2016 at 18:59:39

In Reply to: RE: You can normally see noise with a..... posted by Tweaker456 on March 16, 2016 at 10:55:45:

It's good practice to use diodes that are rated for ~3X or at most ~4X the voltage put out from the transformer, if using half-wave rectification. The voltage seen by the diode will be 1.414 times the max AC voltage seen at the transformer secondary with no load. (V is higher with no load.) In full-wave rectification, two diodes are in series, so it is very safe then to use diodes rated for only 2X the expected voltage from the transformer. My point earlier was more about current rating than about voltage rating. For this application, 100V or 120V diodes (no matter what type you choose) should be very safe.

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Follow Ups Full Thread

Topic - IXYS DSEI HFA series freds or?? - Tweaker456 11:29:50 03/14/16 (19)

RE: IXYS DSEI HFA series freds or?? - sayntjack 23:24:04 03/14/16 (4)

Mounting diodes - Ric Schultz 00:03:58 03/15/16 (3)

RE: Mounting diodes - Tweaker456 12:24:09 03/15/16 (1)

RE: Mounting diodes - Lew 14:51:53 03/15/16 (0)

RE: Mounting diodes - Tweaker456 11:42:20 03/15/16 (0)

RE: IXYS DSEI HFA series freds or?? - Ric Schultz 20:34:08 03/14/16 (1)

RE: IXYS DSEI HFA series freds or?? - Tweaker456 11:57:24 03/15/16 (0)

I thought you'd made your choice, ... - Lew 14:41:28 03/14/16 (8)

RE: I thought you'd made your choice, ... - Tweaker456 11:51:44 03/15/16 (7)

You need to try some different types of diodes that you have... - Cougar 20:00:51 03/15/16 (6)

Reporting back on the IXYS diodes in the dac PS - Tweaker456 20:45:26 04/01/16 (0)

RE: You need to try some different types of diodes that you have... - Tweaker456 01:14:36 03/16/16 (4)

You can normally see noise with a..... - Cougar 07:35:34 03/16/16 (3)

RE: You can normally see noise with a..... - Tweaker456 10:55:45 03/16/16 (2)

RE: You can normally see noise with a..... - Lew 18:59:39 03/16/16 (0)

You should see it... - Cougar 13:18:17 03/16/16 (0)

RE: IXYS DSEI HFA series freds or?? - beautox 13:41:54 03/14/16 (2)

Just what this forum needs another diode thread - Tweaker456 11:29:41 03/15/16 (0)

RE: IXYS DSEI HFA series freds or?? - Ric Schultz 20:39:23 03/14/16 (0)

Follow Ups

RE: You can normally see noise with a..... - Lew 18:59:39 03/16/16 (0)

RE: You can normally see noise with a.....

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