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charger with constant current

by lerameur <lerameur@[EMAIL PROTECTED] > Jul 27, 2008 at 09:49 AM

Hello,

I am attempting to charge a battery and I would like to have a
feedback on the approach.
I have a 18v supply coming from a generator and want to charge a 12v
battery.
First I cannot constant charge the 12v battery at that potential.
Second I though of building a sort of pulse charger so I can charge
the 12v battery with lets say 18v or even higher with pulses.
Therefore I decided to make a boost converter, therefore 18v to the
converter outputs about 55v.
Third, the problem with step 2 above is that the current stop flowing
through the inductor of my boost converter, I have a three amp current
from the generator which I do not want to decrease or stop. I also get
over 17v at the batteries.. which I stopped immediately.

Is this a question of timing, or should I approach the problem in a
totally different way.?

ken
 




 7 Posts in Topic:
charger with constant current
lerameur <lerameur@[EM  2008-07-27 09:49:59 
Re: charger with constant current
John Fields <jfields@[  2008-07-27 12:02:48 
Re: charger with constant current
"ian field" <  2008-07-27 18:19:26 
Re: charger with constant current
Tim Wescott <tim@[EMAI  2008-07-27 11:57:01 
Re: charger with constant current
lerameur <lerameur@[EM  2008-07-27 12:24:45 
Re: charger with constant current
Tim Wescott <tim@[EMAI  2008-07-27 13:14:16 
Re: charger with constant current
"Paul E. Schoen"  2008-07-27 16:17:45 

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