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Old 23rd April 2008, 09:38 AM   #1
kubeek is offline kubeek  Czech Republic
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Default PS for microphone preamp

I want to build a +-15V, 300mA power supply.
I think I will use a CLC filter after the bridge to get rid of line garbage, and some voltage reguator.
What values for the CLC do you recommend?

Is there anything better than 78xx reugators, in terms of produced noise and reguation?
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Old 24th April 2008, 07:46 PM   #2
kubeek is offline kubeek  Czech Republic
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Anyone?
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Old 24th April 2008, 09:31 PM   #3
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Have a peek around at the Prodigy-Pro forums.

The Power Supplies meta-list is probably a good starting point:
http://www.prodigy-pro.com/forum/viewtopic.php?t=2665
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Old 28th April 2008, 05:55 AM   #4
gain is offline gain  United States
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you could use a filter calculator, such as this one

http://www.pronine.ca/butlf1.htm

to find the values for L and C. If you own or can borrow a copy of, "The Art of Electronics" there are tables and equations in the back of that book that can be used to design LC filters.
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