[sdiy] Help with Jupiter 8 clone

[Mike Bryant]

Yeah we often used to see the same thing in analogue mixers.  5532s and 072s have huge power supply rejection ratios, yet sometimes each input module often had its own pair of regulators which added nothing to the performance.


From: Benjamin Tremblay [mailto:btremblay at me.com]
Sent: 04 August 2022 15:53
To: Mike Bryant
Cc: Gordonjcp; synth-diy at synth-diy.org
Subject: Re: [sdiy] Help with Jupiter 8 clone

It’s not like Roland was an industry leader in PSU technology. We need a good power supply for a Jupiter 8. Done.
You want your electronics to be tolerant of conventional supplies. Unless we’re talking about a current-starved USB plug, synth power supplies are good enough.
I am driving a homemade bass synth using Alfa chips with a tiny cheap bipolar buck converter board. It sounds lovely powered with a wall wart.

Modular synths are current pigs. Too many modules use 7XXX voltage regulators sucking up too much current.  If we could just start to back away from zener diodes and shunt regulators on our modules, the power budget could plummet. If Eurorack is supposed to supply a standard set of rails, let’s just once and for all really start to use what’s there trustingly. And no I don’t care if it’s a switching supply.
Benjamin Tremblay
btremblay at me.com<mailto:btremblay at me.com>
330 Fiske Street
Carlisle, MA 01741
978-831-8315







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