Comments for page: Audio Level Meter

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Posted by Steve L. March 02, 2010 - 02:03 pm
For the poster regarding the electrolytic caps (Name?): Actually, two back-to-back polarized caps are the same thing as a so-called nonpolar electrolytic cap, so the circuit is okay as it is. Thank you for your interest, though.

Posted by   March 02, 2010 - 01:40 pm
Electrolytic capacitors don't like to see reverse polarity (they tend to spill their guts rather dramatically). Therefore, C2 & C3 (on the input) should either be a single nonpolar unit or each capacitor should have a (fast) rectifier across it to ensure they don't see reversed polarity. Assuming your target is 50uF total, each capacitor can then be reduced to that value.

Posted by Steve K. February 13, 2010 - 07:59 pm
I still think this is a really cool DIY project. Has anyone else dipped a toe into this one?

Posted by Steve L. February 10, 2010 - 10:22 pm
Please feel free to add any comments or questions you might have. No sign-up is needed.

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