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From: John Woodgate
Subject: Re: Wrestlemania Royale: Tantalum vs. Electrolytic Vs. Polys, etc.
Date: Mon, 28 Oct 2002 16:48:27 +0000
Organization: JMWA Electronics Consultancy
Reply-To: John Woodgate
NNTP-Posting-Date: Mon, 28 Oct 2002 18:44:02 +0000 (UTC)
X-Newsreader: Turnpike (32) Version 4.01 <5Z8C9wtxbnpWyFnyfFzqmVF739>
I read in sci.electronics.design that The little lost angel wrote (in <email@example.com
t.sg>) about 'Wrestlemania Royale: Tantalum vs. Electrolytic Vs. Polys,
etc.', on Mon, 28 Oct 2002:
>Hmm, sorry need confirmation, so I can get away with just one cap or
>must I use as many as there are LED? 4 small caps still cost more than
>1 big cap :D
You MAY be able to. Without knowing why you are getting flicker, and
exactly what goes on inside your SMPS, it's impossible to say,
especially as you aren't going to ant to put as much as the theoretical
22 mF (millifarads) there anyway. See what happens with, say, 2200 uF.
>Then again, since I'm testing with almost no load on the +5V, it could
>simply be the SMPS lapsing into discontinuous mode to protect itself
>in zero load condition.
Ah, yes, you must load the 5 V supply. Put 2.5 ohms 10 W or 5 ohms 5 W
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
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