<!DOCTYPE html>
<html><head>
<meta charset="UTF-8">
<style type="text/css">.mceResizeHandle {position: absolute;border: 1px solid black;background: #FFF;width: 5px;height: 5px;z-index: 10000}.mceResizeHandle:hover {background: #000}img[data-mce-selected] {outline: 1px solid black}img.mceClonedResizable, table.mceClonedResizable {position: absolute;outline: 1px dashed black;opacity: .5;z-index: 10000}
</style></head><body style=""><div>+1 to Neils' suggestion, for instance, look at the schematic for the CPS150 power supply.</div>
<div> </div>
<blockquote type="cite" style="position: relative; margin-left: 0px; padding-left: 10px; border-left: solid 1px blue;">Op 16 april 2019 om 9:18 schreef Neil Johnson <neil.johnson71@gmail.com>: <br> <br>
<div dir="auto">
<div>
<div class="gmail_quote">
<div class="gmail_attr" dir="ltr"> </div>
<blockquote style="margin: 0 0 0 .8ex; border-left: 1px #ccc solid; padding-left: 1ex;">
<div dir="auto">Google for
<div dir="auto"> </div>
<div dir="auto">Mutual shutdown power supplies</div>
<div dir="auto"> </div>
<div dir="auto">Larger mixing desk power supplies often have this function. Check the power supply section in Self's SSAD. </div>
<div dir="auto"> </div>
<div dir="auto">Neil</div>
<div dir="auto"> </div>
<div dir="auto"> </div>
<div dir="auto"> </div>
</div>
<br>
<div class="gmail_quote">
<div class="gmail_attr" dir="ltr">On Tue, 16 Apr 2019, 04:09 Tim Ressel, < <a href="mailto:timr@circuitabbey.com" target="_blank">timr@circuitabbey.com</a>> wrote: </div>
<blockquote style="margin: 0 0 0 .8ex; border-left: 1px #ccc solid; padding-left: 1ex;">Yo, <br> <br> I am putting together a power supply for my new 5U case. At first I just <br> have 7815 and 7915 regulators. But then it occurred to me: would it not <br> be indeed nice to have both rails fold back if one over currents? to <br> answer my own question, why yes, yes it would. <br> <br> So now to make it work. I thought of using LM317 and LM337s and do a <br> cross-over thing. Use an op-amp to servo off of a virtual ground set up <br> with a voltage divider. I am not sure if that will do what I want. I <br> guess I can try it with the 'L' versions; easier to put into foldback. <br> <br> I also thought of using LM723s but that gets complicated in a hurry. <br> More than I want. <br> <br> Thoughts? <br> <br> --Tim (musing aloud) Ressel <br> <br> -- <br> --Tim Ressel <br> Circuit Abbey <br> <a href="mailto:timr@circuitabbey.com" target="_blank">timr@circuitabbey.com</a> <br> <br> _______________________________________________ <br> Synth-diy mailing list <br> <a href="mailto:Synth-diy@synth-diy.org" target="_blank">Synth-diy@synth-diy.org</a> <br> <a href="http://synth-diy.org/mailman/listinfo/synth-diy" target="_blank">http://synth-diy.org/mailman/listinfo/synth-diy</a> </blockquote>
</div>
</blockquote>
</div>
</div>
</div>
_______________________________________________ <br>Synth-diy mailing list <br>Synth-diy@synth-diy.org <br>http://synth-diy.org/mailman/listinfo/synth-diy </blockquote>
<div><br> </div></body></html>