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From: Tong Narak
Subject: Re: Does 7808 can charge the car battery lead acid ?
Date: Tue, 17 Dec 2002 20:59:13 +0700
Organization: C.S. Communications Co. Ltd.
NNTP-Posting-Date: Tue, 17 Dec 2002 13:59:17 +0000 (UTC)
X-Mailer: Mozilla 4.8 [en] (Windows NT 5.0; U)
Thank you all. After search the net, I found "LM317 with one
transistor" and "L200" that can work as simple
"voltage reguator and current limited".
These circuit is "float charing" type something like trickle
charge but constant voltage. The "voltage reguator and current limited"
meaning if the current rises over this set current, the regulator will
be forced to put out a lower voltage. Since voltage drops, so will
the current; hence current limited. While the battery is charging,
the current should decrease slowly while voltage starts to increase.
In the end the current will be next to zero and the voltage will be
equal to the set voltage.
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