Battery charger relay
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Battery charger relay

 
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RotorMotor2



Joined: 23 Nov 2006
Posts: 11
Posted: Sun Nov 26, 2006 4:47 am    Post subject: Battery charger relay Reply with quote
How would i make a circuit that would turn on a relay under a preset voltage such as below 12.3v in order to turn on a solar panel to charge it back to 12.8v or a charger or whatever.....?

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neon



Joined: 25 Feb 2006
Posts: 590
Posted: Mon Nov 27, 2006 3:22 pm    Post subject: Reply with quote
Try a comparator and a zener.
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