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Porky2774
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1 Posts
Posted - Feb 06 2009 :  3:21:38 PM  Show Profile  Reply with Quote
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

Aaron Cake
Administrator

Canada
6718 Posts
Posted - Feb 08 2009 :  10:40:42 AM  Show Profile  Visit Aaron Cake's Homepage  Send Aaron Cake an ICQ Message  Send Aaron Cake a Yahoo! Message  Reply with Quote
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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amin kath
New Member

Pakistan
1 Posts
Posted - Feb 14 2009 :  2:52:18 PM  Show Profile  Click to see amin kath's MSN Messenger address  Reply with Quote
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
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