At 09:33 PM 2/22/2004, Adi Linden wrote:
>I am just looking for some feedback on a circuit design idea I am playing
>with.
>
>I am thinking about building a gel cell charger using the UC3906 charger
>IC. While the design is straight forward, it requires about 16V input
>voltage to charge a 12V gel cell with dual step mode.
>
>I hope to use this charger in a motorvehicle or camper. So my power source
>is a lot closer to 12V then 16V.

The simplest (and one of the most reliable) charger for charging 12V gel
cell battery from a 12V automobile is to use a schottky diode in series
with a current limit resistor.  The 12V supply is already at the correct
voltage.

dwayne


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Dwayne Reid   <dwayner@planet.eon.net>
Trinity Electronics Systems Ltd    Edmonton, AB, CANADA
(780) 489-3199 voice          (780) 487-6397 fax

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