Solar battery charger operated on the principle that the charge control circuit will produce the constant voltage.
Solar panel 12v battery charger circuit diagram.
The schematic shown here is a very effecient automatic solar battery charger circuit which can be used to charge 12v sla batteries from solar cells.
Solar battery charger circuit principle.
The circuit is using an lm317t voltage regulator ic.
1n4007 diodes 3nos.
The output voltage and current are regulated by adjusting the adjust pin of lm317 voltage regulator.
Circuit diagram of solar panel battery charger step 6 from below you can see the soldered connections how they run along the copper tracks.
That looks cool isn t it.
2k2 1 4 watt resistor 1no.
Before delving into the following concepts you can probably try this super easy solar battery charger which will ensure safe and guaranteed charging of a small 12v 7 ah battery through a small solar panel.
12v battery charger with auto cut off circuit diagram.
I have added in the brown wire as brown line the diode as a blue line i have also added in the ve ve makers for the battery.
The bc548 transistor is working as a switch which will disconnect the ground of the lm317t from the solar cell when the battery become full charge.
Ic 7812 1no.
12v solar battery charger controller circuit make download circuit diagram a.
7808 voltage regulator is used for constant supply to the operation of the circuit to cut at a required fixed voltage.