Solar Charger Build


Posted on Feb 4, 2014

Whatever past project these were used in obviously required three cells to be wired in parallel with a rather large (4700 uF) capacitor on a perf board. There were 13 of these board assemblies, for a total of 39 solar cells and 13 capacitors (not to mention the 13 perf boards themselves). The cells themselves are about 2. 25 inches square, and have `PCB-60608B`


Solar Charger Build
Click here to download the full size of the above Circuit.

written on the back of them. Strangely, even though each solar panel was labeled with the same number, there was quite a variety of differing panel styles. Anyways, I couldn`t find much on the `PCB-60608B` solar cells, but I did find what appears to be a schematic of the solar-powered accent lights these panels were made for. I started doing some tests with the cells to see what sort of power they could produce. They actually did pretty well, even under a simple table lamp. Anxious to try them out on the sun, but with the sun long past the horizon, I had to make do with halogen lights. It appeared that one cell was able to put out around 3 volts under the light of my desk lamp. Good! I wired three of them together in series and sure enough, I got an output near 9 volts. It was exciting to verify that the cells were in working order, and indeed put out a relatively high voltage. I measured the short-circuit current of one cell under the desk lamp, and (as I expected) it was quite low-around 10 mA. Surely, under sunlight, there would be a higher power output. Also, I`m able to wire the cells in parallel to increase the maximum current output of the solar panel-voltages add when cells are in series, and currents add when they are in parallel. I went about constructing such a panel. I wired eight cells in series pairs to get four 6 volt panels. Then, I wired these in parallel so that I got some sort of usable current out of...




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Cordless phone backup circuit
Thumbwheel programmable interval timer
2000V Low-Current Power Supply
Wireless Ir Headphone Transmitter Circuit
high power amplifier 300w circuit
pierce xtal oscillator circuit
lighting leds
rs232 with opto isolation
Ponyprog Circuit for ATMEL AVRs
R/C Timer-Switch for Radio Control Applications
Speed differential negative feedback circuit
Discrimination TR-IB Metal Detector Circuit



Top