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Fred Bloggs wrote:
Ric wrote:
Hello,
I would like to charge the 9.6v NiCd batteries of my Makita electric
drill
direct from the 12vDC supply on board my boat. Can anybody point me to a
circuit design?
Using a 12v/240v inverter and the existing 240v charger is not an
option as
the old charger is broken.
This page is a decent explanation of how to do it-observing battery C
rating:
http://www.web-ee.com/Schematics/Bat...er/charger.gif
You can replace that D6 by something like an ordinary green LED (cathode
to Q2 emitter) and a resistor from the D6 cathode-Q2 emitter junction to
ground for a 10ma bias -something like R=(13-2)/10=120 ohms.
^^^^^
MAKE THAT 1.2K Ohms
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