[sdiy] P-p-power!!!

ulfur hansson ulfurh at gmail.com
Tue Apr 16 03:16:30 CEST 2019


I've been using this CUI DC-DC converter for recent projects. no additional
caps or circuitry needed, plus it has overcurrent/reverse polarity
protection.

https://eu.mouser.com/ProductDetail/CUI/PDQ30-Q24-D15-D?qs=ZGJ6LVh7YLAL%2FeHNTwkTGg%3D%3D

it is super sleek!
-ulfur


mán., 15. apr. 2019 kl. 21:09 skrifaði Tim Ressel <timr at circuitabbey.com>:

> 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
>
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