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Forums
Engineering
Electrical Engineering
LED to come on with battery power when it's too dark for the solar panel
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[QUOTE="Tom.G, post: 6035131, member: 581973"] Just change the wiring a bit. Wire the left end of the relay coil to the Battery "-", not "+" Connect the left end of the LED to the relay "Off" contact, not "On" When the Solar Panel is generating voltage it will pull in (turn On) the relay. When the battery is supplying power, the Diode will block the battery voltage from the relay, turning the relay Off. Cheers, Tom [/QUOTE]
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Engineering
Electrical Engineering
LED to come on with battery power when it's too dark for the solar panel
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