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 Question about car battery charger

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Porky2774 Posted - Feb 06 2009 : 3:21:38 PM
I was looking at the schematic of the car battery charger and saw that the input was a constant 18V. If I put in a lower voltage, say around 14 volts would this circuit still work?

thanks
2   L A T E S T    R E P L I E S    (Newest First)
amin kath Posted - Feb 14 2009 : 2:52:18 PM
you have 2 option first making charger with transformer but you add current limitor cuircut and second with old pc power supply but need some change if you get help reply me
With best regards
Amin Kath
Aaron Cake Posted - Feb 08 2009 : 10:40:42 AM
A fully charged lead acid battery is just over 14V and the regulator needs a 1.2V overhead, so 14V won't work. 16V is about the minimum you can use.

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