ProtoDAC TDA1387 X8 project

[hifinet]

Since the LM317 are cheap and easy to get a fixed 5v, that’s the first I’ll try. I also have a second one that I’m going to try, jung super power design I found on Ali. But I’m still open for suggestions and ideas. I still learning about this and are enjoying the process. I also got some second hand electrolytes that I going to test. Muse, Jovial, Audio Note Kaisei og Cerafine, looking forward to that.

I ordered a lm317/lm337.  Is that going to work, or do I need a plain lm317?

Also, I have a bunch of old laptop PS laying around.  That should work to feed the lm317/lm337, shouldn't it?

Please forgive the noob questions, still learning.

Thanks!

The LM337 is the negative voltage regulator. So you don't need that. Just the LM317. ProtoDAC needs very little current. A laptop supply is overkill. The heat generated by the regulator in watts is voltage drop times current in amps. You can drop 7 volts (12-5V) without much heat at all.