Solar Panel Battery Charger Circuit Diagram

The circuit uses a 12 volt solar panel and a variable voltage regulator ic lm 317.

Solar panel battery charger circuit diagram.

The circuit diagram shows a simple set up using the ic lm 338 which has been configured in its standard regulated power supply mode. The circuit harvests solar energy to charge a 6 volt 4 5 ah rechargeable battery for various applications. The fig show the wiring diagram of the ssc. Solar battery charger circuit advantages.

First connect the ve from the solar panel to the centre pole of the relay then connect a red wire from battery to n o of the relay. 12v solar battery charger controller circuit make download circuit diagram a. Solar panel charge controller wiring intro solar panel charge controller wiring diagram and step by step guide for off grid solar power system wiring. As can be seen in the given circuit diagram the design basically consists of a solar panel a pnp transistor few leds a battery and a few resistors.

Using a current control feature the specialty of the design is that it incorporates a current control feature also. Circuit diagram of solar panel battery charger step 6 from below you can see the soldered connections how they run along the copper tracks. If a 20w solar panel has an output current of 2 5a in full sunlight the charge current will be 2 5a. 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 circuit design is extremely straightforward and may be understood with the following points. Regarding the battery ah capacity it is generally best if the battery can be fully charged within one day or less. Now set the output voltage by adjusting pot rv1. The solar panel consists of solar cells each rated at 1 2 volts.

Connect the ve wire from the solar panel to the ve of the circuit then connect the battery s ve to the circuit. The cd4047 ic is connected and configured as astable multivibrator when we turn on spst switch this circuit starts oscillation. Give the connections according to the circuit diagram. The output current is identical to the solar panel output current.

How to operate this solar battery charger circuit. The circuit of a simple lm338 solar battery charger is shown below using the ic lm338. Solar panel output voltage is directly fed into lm317 positive regulator circuit and it is adjusted to give 12 volt output and battery connected to this bias through 3a 50v schottky diode. Circuit is simple and inexpensive.

Place the solar panel in sunlight.