[sdiy] P-p-power!!!

[Tim Ressel]

Thanks dudes! It helps to know what to search for. Now I can make my 
supplies. You're the best!

--TimR

On 4/16/2019 12:30 AM, Jarno Verhoeven at ziggo.nl wrote:
> +1 to Neils' suggestion, for instance, look at the schematic for the 
> CPS150 power supply.
>> Op 16 april 2019 om 9:18 schreef Neil Johnson 
>> <neil.johnson71 at gmail.com>:
>>
>>     Google for
>>     Mutual shutdown power supplies
>>     Larger mixing desk power supplies often have this function. Check
>>     the power supply section in Self's SSAD.
>>     Neil
>>
>>     On Tue, 16 Apr 2019, 04:09 Tim Ressel, < timr at circuitabbey.com
>>     <mailto:timr at circuitabbey.com>> wrote:
>>
>>         Yo,
>>
>>         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.
>>
>>         Thoughts?
>>
>>         --Tim (musing aloud) Ressel
>>
>>         -- 
>>         --Tim Ressel
>>         Circuit Abbey
>>         timr at circuitabbey.com <mailto:timr at circuitabbey.com>
>>
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-- 
--Tim Ressel
Circuit Abbey
timr at circuitabbey.com

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