Simple Solar Panel Circuit

Now replace the battery with the solar panel with the positive lead of the solar panel connected to the positive lead wire from screw 5 and the negative lead of the solar panel connected to the negative lead wire from screw 3.

Simple solar panel circuit. Rx 10 ohm 2 watt. You just created a basic solar powered led circuit. The panel that we re using for these circuits is this one part number pwr1241 from bg micro about 3 each. One of the circuits i d like to show is solar panels connected directly to a simple 12vdc 115vac inverter without a battery no sun no power.

The charging circuit for these batteries is simple a solar cell connected to a diode then connected to a nicad battery. Pat yourself on your. R1 r2 100 ohms 5 watts r3 r4 15 ohms 5 watts t1 t2 2n3055 mounted on suitable heatsink transformer 9 0 9v 3 to 10 amps r5 10k r6 0 1 ohms 1 watt p1 100k preset linear d1 d2 6a4 d3 1n4148 t3 bc547 c1 100uf 25v relay 9v spdt ldr any standard type solar panel 17. The above mentioned changeover quickly changes the battery across charging mode to the led mode lighting the led from the battery voltage.

Since the output of the panels varies from about 10 18volts i d like to regulate it at about 12 13vdc. To keep things simple we re using a single nicely made small solar panel for all of these circuits. Test your solar circuit. The first part of a solar circuit is a device for collecting sunlight.

Bill of materials to get a 6v 4ah solar light circuit employing a 1 watt led.