Yet another rectifier

Building the power supply for my Wolverine and inspired by the incredible build photos from @stuartmp and @danieljw, I decided to learn KiCad and do my own dual full-wave bridge rectifier pcb. I would have used the one from @prasi, but I wanted to use screw terminals instead of quick-connect tabs. That's the nice thing about doing your own -- you can use whatever hardware you prefer. So for anyone who hasn't taken the plunge, I highly recommend it. It's really pretty easy -- KiCad is amazing -- and quite fun. So thank you to @stuartmp, @danieljw, @prasi, and @xrk971 for the wealth of info you've shared in these forums that inspired me to take that plunge.

Fwiw, here's what I came up with. It's an active rectifier using the LT4320 Ideal Diode Bridge Controller like @prasi's combined with features that I see in the photo of @stuartmp's dual bridge rectifier pcb. So it's kind of a hybrid between the two. The key features are:
  1. Dual active rectifiers using the LT4320
  2. Can use either screw terminals or quick-connect tabs
  3. Supports a ground lift circuit to connect to chassis ground
  4. Supports indicator LEDs onboard, offboard, or both
  5. Supports bleeder resistors
  6. Supports the RZ/CZ components as on @stuartmp's pcb
Confession: I'm not sure what RZ and CZ are for. I included them just because I see them on @stuartmp's pcb. I assume the Z stands for Zobel, so I've been reading about Zobel networks, but I still can't map what I see in the pcb photo to what I've been reading. And that's my ulterior motive for posting this. Maybe someone can answer this question for me.
 

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  • FullWaveActivator-Schematic.pdf
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Cx, Cs and Rs are for a snubbed across the transformer secondary.

The idea is to dampen the ringing of the transformer caused by diode switch off.

Ultimately it is to make the power supply quieter.

See here

Mark's pdf explains quite nicely why and how to use it.

If you have a scope already, I think building a quasimodo is fantastic investment.