Rocinante

single rail from bipolar psu
« on: October 18, 2020, 12:34:09 AM »
I have several bipolar psu's laying around with a +48v but need a single supply +24V, 0V, 48v psu for a Helios/Neve type circuit. Can I just tap the +24v and +48v and ignore the -24v?
Is there strain?
I'm sure this has been asked before (probably by me) but Google didn't give me a definitive answer and I want to understand this.
I understand why we want bipolar ((or dual rail) psu's for op amps.
I understand how to create dual rail from single supply. I don't know if using one rail on a bipolar supply would damage anything in the end.
Thank you in advance.
If there's a harder way to do this, I haven't found it yet.


squarewave

Re: single rail from bipolar psu
« Reply #1 on: October 18, 2020, 01:30:53 AM »
Yes, it's fine. There will be no strain. But the power of each rail stays the same. If the transformer winding and other parts are a amply derated, you probably could pull a little more power out of it.

Rocinante

Re: single rail from bipolar psu
« Reply #2 on: October 18, 2020, 11:49:14 PM »
Thanks squarewave.
If there's a harder way to do this, I haven't found it yet.


 

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