I just made an updated Pearl power supply for the PassDIY Pearl Phono. The design goals for the board and power supply included:
- Compact with PCB mount transformer
- Able to fit in an off-the-shelf chassis (e.g. Hammond) OR into the 10x10 grid of a Modushop / DIYAudio chassis
- CRCRC filtering for each rail
- Include optional snubber circuitry
- Include ground break rectifier on the PCB
- Include A/C cap on the PCB
- Flexibility for 120/240 mains
- LEDs on PCB (for rail voltage indication and front panel indicator)
It's now running on my Pearl 2, and I'll be shipping it in a few days for a long term beta tester.
Rails are ~34V, with one a little higher than the other. I used the PCB fab house to make aluminum PCBs as front and back plates.
I plan to write up a Build Doc and BOM, then offer up the main PCB and front/back plate PCBs. Stay tuned. I have a few sets on hand, PM if interested.