neil.johnson71 at gmail.com
Tue Apr 16 09:18:06 CEST 2019
> Google for
> Mutual shutdown power supplies
> Larger mixing desk power supplies often have this function. Check the
> power supply section in Self's SSAD.
> On Tue, 16 Apr 2019, 04:09 Tim Ressel, <timr at circuitabbey.com> wrote:
>> I am putting together a power supply for my new 5U case. At first I just
>> have 7815 and 7915 regulators. But then it occurred to me: would it not
>> be indeed nice to have both rails fold back if one over currents? to
>> answer my own question, why yes, yes it would.
>> So now to make it work. I thought of using LM317 and LM337s and do a
>> cross-over thing. Use an op-amp to servo off of a virtual ground set up
>> with a voltage divider. I am not sure if that will do what I want. I
>> guess I can try it with the 'L' versions; easier to put into foldback.
>> I also thought of using LM723s but that gets complicated in a hurry.
>> More than I want.
>> --Tim (musing aloud) Ressel
>> --Tim Ressel
>> Circuit Abbey
>> timr at circuitabbey.com
>> Synth-diy mailing list
>> Synth-diy at synth-diy.org
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