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From: bill@thd.tv.tek.com (William K. McFadden)
Newsgroups: sci.electronics
Subject: Re: When is the battery fully charged?
Message-ID: <1991May10.005414.11195@tvnews.tv.tek.com>
Date: 10 May 91 00:54:14 GMT
References: <1991May9.041604.24787@crash.cts.com> <1079@eplunix.UUCP>
Sender: news@tvnews.tv.tek.com (news user)
Organization: Tektronix TV Products
Lines: 16

In article <1079@eplunix.UUCP> raoul@eplunix.UUCP (Nico Garcia) writes:
->Recharging them depends on the battery type. For lead-acids, a
->constant-voltage constant-current circuit is best. Basically, run an LM317
->as a current source (no more than 1/10 the battery capacity), and use a
->voltage supply no higher than your maximum voltage to supply voltage to that
->(another LM317 works just fine). 

It seems like it would work better to have the voltage regulator after
the current regulator.  That way you wouldn't have to concern yourself
with the voltage drop across the current regulator.

A good idea, though.  I'll have to try it.
-- 
Bill McFadden    Tektronix, Inc.  P.O. Box 500  MS 58-639  Beaverton, OR  97077
bill@tv.tv.tek.com,           {hplabs,uw-beaver,decvax}!tektronix!videovax!bill
Phone: (503) 627-6920                 "SCUD: Shoots Crooked, Usually Destroyed"