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Best way to lay out multiple power supplies (Raspberry streamer)
Best way to lay out multiple power supplies (Raspberry streamer)
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Old 8th August 2019, 02:35 AM   #1
drtebi is offline drtebi  United States
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Join Date: Jul 2013
Location: San Francisco
Default Best way to lay out multiple power supplies (Raspberry streamer)

Hi there,

I am in the process of reconfiguring my RaspberryPi streamer, using the Dial-DAC, which requires a separate +/- 15V power supply.

I've got everything ready to go, the case is already made and the switch and all inputs including the power input are mounted.

Now I wonder how to best lay out all the parts inside the case... there is plenty of space (a standard 17" wide case, 14" deep), but I am not sure how to best prevent buzz, keep transformers/regulators separated etc.

Please take a look at the attached image, it should be self-explanatory, except maybe for the green board on the left—that's a PCB that holds a PCB-mount Triad transformer, and a fuse and voltage switch (intended for my earlier, 5V only power supply version of the streamer).


Any suggestions would be greatly appreciated




P.S.: If anyone would like to play around with the layout, I have uploaded an SVG file that has each component as a separate object here:
http://drtebi.com/dump/diyaudio/Layo...AC-upgrade.svg
(Can be opened with Inkscape or similar program)
Attached Images
File Type: png Layout 2b (Dial-DAC upgrade).png (776.7 KB, 178 views)

Last edited by drtebi; 8th August 2019 at 02:42 AM.
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Old 11th August 2019, 10:40 PM   #2
drtebi is offline drtebi  United States
diyAudio Member
 
Join Date: Jul 2013
Location: San Francisco
Hmmm... no answers. Maybe my question is to ambiguous?



Basically I just want to know things like....
- Short AC wires or short DC wires, which is preferable?
- Is it important to keep AC wires away from the RPi?
- Which way to orient the toroidal transformer?


etc.
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Old 26th August 2019, 11:12 AM   #3
drtebi is offline drtebi  United States
diyAudio Member
 
Join Date: Jul 2013
Location: San Francisco
Well, sometimes you're on your own and just have to trust your intuition.
So here attached a pic of the internals. I think it worked out quite well, mostly pretty short connections.

The Dial-DAC sounds quite nice, too!
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File Type: jpg dial-dac-setup.jpg (880.1 KB, 90 views)
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