Solar Panel Battery Charger Circuit

Place the solar panel in sunlight.

Solar panel battery charger circuit.

The circuit of a simple lm338 solar battery charger is shown below using the ic lm338. 12 volt dc is available from the panel to charge the battery. Online shopping from a great selection at health household store. By adjusting its adjust pin output voltage and current can be regulated.

Each every track is electrically. The circuit uses a 12 volt solar panel and a variable voltage regulator ic lm 317. Charging voltage is typically around 4 2v. The circuit diagram shows a simple set up using the ic lm 338 which has been configured in its standard regulated power supply mode.

How to operate this solar battery charger circuit. A 5v step up voltage booster is also connected to the battery and is used to convert from 3 7v dc to 5v dc. For attaching the wire one can make use of the soldered or the un soldered. Using a current control feature the specialty of the design is that it incorporates a current control feature also.

If a smaller or less effective heat sink is used the maximum power dissipation must be de rated. Circuit diagram of solar panel battery charger step 1. Charging current passes through d1 to the voltage regulator ic lm 317. The solar panel consists of solar cells each rated at 1 2 volts.

The solar panel attaching wires. Give the connections according to the circuit diagram. Now set the output voltage by adjusting pot rv1 check the battery voltage using digital multi meter. To keep the junction temperature below the 125 c max the power must be limited to about 10w.

Voltage booster s input ranges from 0 9 to 5 0v. The copper stripboard includes copper tracks rows. Schematic of the solar charger circuit.