ECN Forum Forums Technical Discussion Electrical Theory and Applications SCR VSD causing relay to chatter

Well, I did as Tesla suggested and grabbed a few PC PSU's.

Then I started looking at some projects online and found someone's design where they made a variable DC voltage power supply using a PSU. I took that initial circuit and added a couple modifications and ended up with a Frankenstein's Monster version of a +12 VDC and +0-9VDC power supply. Behold...