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We tend to think of tube mic PSUs as simply supplying voltage, but they also have op-amp circuitry of varrying quality |
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Here's a good read on op-amps and PSUs: |
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in such a circuit, would one be better off with no regulation at all.. a bunch of Pi filters and maybe a choke? |
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Do you see any benefit to fast recovery epitaxial diodes in the bridge rectifier? |
dbock wrote on Wed, 19 January 2011 14:21 |
BTW I appreciate Brad using his whole real name, but who is "ttown"? |
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a little ironic considering the marked similarity between your own user name and lack of signature in your posts and that of "ttown". |
Jim Williams wrote |
Check with some of the design work on precision regulators done by Walter Jung of Analog Devices. He has published many papers on the subject of precision regulation for audio circuits. Yes, they use precision opamps for the references. They are not a bad choice, but maybe one of the better ones. |
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... but let's not loose the woods for the trees here. The point is that a PSU can influence a mic's audio quality. I am no expert and have limited experience as I stated in my post above. |
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a good tube mic B+ PSU shouldn't require the convoluted hoop-leaping that an op-amp circuit would entail. |
David Bock wrote on Thu, 20 January 2011 12:50 | ||
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