In Reply to: replaced diodes/caps in power supply? posted by Thom on October 25, 2014 at 06:07:10:
Well, your Crees have a lower impedance than the 1N5408 which causes the transformer to have higher current spikes. Adding a 50 ohm resistor right after the diode will fix it.
I don't usually like using 500uf caps as they are kind of like band aids. A better power supply can be made with a couple of 60 to 100 uf caps and a decent choke. I can understand why the manufacturer used the big caps as they are a cheaper way to make the background noise lower.
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Follow Ups
- RE: replaced diodes/caps in power supply? - Chip647 06:25:05 10/25/14 (4)
- RE: replaced diodes/caps in power supply? - Thom 18:55:49 10/26/14 (0)
- RE: replaced diodes/caps in power supply? - Thom 14:44:34 10/25/14 (2)
- Radial-lead film caps - JJ Triode 11:17:35 10/26/14 (1)
- RE: Radial-lead film caps - Thom 18:53:22 10/26/14 (0)