UDP3: Umbilical Cable Driver for Pearl 3 phonostage -- move Pearl 3 PSU into its own, distant, chassis

[grataku]

Remember that UDP3 uses 22VAC secondaries instead of 18VAC.

I’d be interested in a similar PCB as well, those little blue transformers are great.

UDP3 yes 22V but are you using 15 or 18v for the regular pearl3 PS? I went with the BOM 15Vx2, comes out to ~22 V filtered under load (per side). I figured ~7v drop on the 78(9)15 is sufficient to clean the DC up.

 

[grataku]

If you want to print here are my gerber files that I made using easyeda sometime back. The pcb works as expected 🙂

View attachment 1394436

Thank you!!

 

[Abx74]

@Mark Johnson​

with 2x22Vac, we got around 2x30Vdc after rectifier... can I use a 2x24Vac transformer and a CRC instead of C5 and C6 to get the same right voltage (around 2x30Vdc) before FB1 and FB2 ?

Thanks

Damien