Bipolar regulator PCB with "De-Noiser", a different PCB layout from the known schematic

[seeyou]

Recently I came across Mark Johnson's thread "VRDN: bipolar regulator PCB for line level ckts: ±11V to ±20V @ 1.5A with "De-Noiser" "
https://www.diyaudio.com/community/...l-ckts-11v-to-20v-1-5a-with-de-noiser.355883/
and instantly became a fan.

Here is a redraw of his schematic done just for fun. I named it "Butterfly DN". The PCB can be made by hand if you like, it has only two layers.

IT HAS NOT BEEN TESTED YET!

I have ordered some PCBs and will be testing soon.
I will be updating this thread with pictures.

For how to set it up, please visit the first post of the original thread:
https://www.diyaudio.com/community/...l-ckts-11v-to-20v-1-5a-with-de-noiser.355883/
BOM, Part numbering on the PCB and component sizes are exactly the same.

Heat Sink thermal resistance: 6.2C/W - 11.4C/W, depending on the length of the heatsink used (ref. attached pdf)
Board Size: 103,5mm x 91,5mm


Added:

• Optional half rectification diodes D98 & D99 have their own place on the PCB. Remember, they are only used for half rectification, when using a transformer with only ONE secondary. They are marked with a *
• Added an optional resistor (R23, R24) in parallel to every one of the Variable resistors (VR1, VR2), in case you want to replace the Variable resistors by a fixed one.
• 2x Outputs, CON1 and CON2. CON1 supports many readily available connectors. CON2 supports Faston terminals OR Europlug
• Added R100, a way to connect the ground plane to chassis via the top right mounting hole. You can short it or use a resistor 3-10ohm

Have fun!
Alexander

Disclaimer
This thread is made by a fan, it is not affiliated in any way to Mark Johnson's work and the original VRDN thread.
This layout is a DIY project done by me, provided "as is", with no official guarantee it will work.

 

[seeyou]

Updated files to Rev. 1.4, cosmetic changes only

 

[seeyou]

Updated files to Rev. 1.5, cosmetic changes only

 

[seeyou]

Finally the first PCBs have arrived!

 

[seeyou]

Voltage checking

 

[seeyou]

Added a "settings info table" to the bottom side

 

[seeyou]

v1.5.1, Reversed the regulators by 180 degrees. you could not access the heatsink screw because of the location and hight of the capacitors.

This revision is considered final. I have deleted all previous files, feel free to download the current/ final gerber files.

 

[Mark Johnson]

Link added at bottom of VRDN post #1.

 

[Elvee]

Idem for the Denoiser thread

 

[seeyou]

v1.5.2 cosmetic revision

 

[mz543578854]

Is there a reason for this strange layout? To make tracks have the identical length?

 

[Mark Johnson]

Perhaps it might be intentional: hoping to encourage other Forum members to create their own personal, fully custom, self-optimized layout.

 

[mz543578854]

I doubt that is the reason. Even achieving the butterfly look would sound more likely to me.

 

[seeyou]

I just wanted it to look stylish. And yes, the butterfly was the concept behind the design. Plus there is a little bit of OCD regarding symmetry

 

[eighties analogue]

Alexander (and Mark),

I want to thank you both for the efforts you've put into these posts and the development. I'm looking forward to dropping this PSU into its own 1U case to power an 80s preamp mounted within its own 1U case. I'm considering pimping this denier design by adding (a largely unnecessary) OLED dual-channel oscilloscope screen showing the mains AC and output DC. Why the heck not? Just for fun...

Cheers,

Tim

 

[HRDSTL]

Thank you to all who participated in this project. In JLCPCB I ordered 5pcs of boards. (1x for openamp, 2x for sapphire headphone amp, 2x for sapphire preamp)