panel lightsRecycled Solar Powerhi. can any one offer any explanation. I have solar cells. each tests at .v i hooked them all in series i got up n down numbers as if bad cells of wires. so i took apart. i hooked cells and get . v good i guess right? but wont drive a dc n motor.? so anyways I went to add another cell to row and i drop to volt. i figure bad cell? so i get two rows each v but when i connect those two i only get v? what am i doing wrong? i tried connecting the two rows in series and parallel any thoughts?
I would like to make a solar powered outside outlet for a fish pond pump. Any solutions for a DIY gal with no solar intellect lls
The charge controller will tell you the wattage.
does anyone know the st configuration similar to this that I would need to charge a phone? I have solar panels and more smaller panels I need it by the day after tomorrow
Hi, maybe it is a bit too late for an answer, i had the same problem but finally i figured out what it was, i had about cells, i had to test each of them to get similar voltage and amperage, i isolated most powerful, it was enough only of the good ones to get volts. Before that i couldnt get more than Volts out of cells.
This is about a Solar Power Plant made from recycled parts. It is a work in progress. It all started at the landfill where someone next to me was throwing away solar garden lights. I had at home from garage sales. I had an old picture frame and some plywood and paint. I had to buy diodes from radio shack. I started by taking all the lights apart and using the solar cells. I saved the circuit boards and LEDs for future projects. The plastic globe made nice little hot caps for the garden.
I cut some scrap plywood and nailed and glued it to the sides. I cut them at degrees for Washington state.
The first test. Over volts on a winter day. Tried it vertical and horizontal. I have no idea of how many watts.
I used the globes for hot caps out in the garden.
Hi. Being an absolute beginner and not knowing my butt from my elbow. What is a diode? I assume they come in different s so what should be used here?
Next I cut some holes in an old sewing box. Added a volt receptical Made an opening for the inverter and an exit hole for the solar panel wire. Soldered both pos. to each other same with negs. a fuse will attach to the hot wire when I find one. Just for testing I wired it up with no regulator or fuse. I salvaged the volt batteries out of a broken electric razor kids scooter. I used a pronged plug to exit the box and plug into the solar panel wire. The voltage in the batteries went from . volts to over volts with very little sun. I ordered a voltage controller off EBay . It will be here in a few days.
I painted the board with some old house paint. I soldered in a row pos. to neg. I think that would have been OK I will know when I get done. Each set is putting out volt in good sun.
What solar panels. Mine only put out about . volts each
Actually, diodes was the correct choice. They serve purposes. , they keep the array from discharging the batteries when there is no light, and , they keep a bad cell in one of the lines from stealing the current from the others. The loss is exactly the same since each of the paths only pass though diode. Using also lets you get away with cheaper diodes since each diode only has to handle / of the total current. If you use diode it has to handle the current from all arrays. With diodes, you actually lose less power. Power loss is the the internal resistance of the diode times the current squared. So for example, lets say the internal resistance of the diodes is ohm and each of the legs provides amp of current. With diodes, your total loss would be ohm X amp x amp Watt per diode for a total of watts loss. If a single diode was used you would have ohm x amp x amp watts loss.
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loved this project but may I ask when you measured volts from each of the rows of five cells did you measure that before or after the Diodes?
I mounted the cells with a little hot glue then soldered a diode to the pos. on each set and into a splice on a single cord. Next I spliced all the neg. ends to a single exit wire. I dabbed a little hot glue over the solder joints to keep everything in place. I hot glued the picture frame over everything leaving the bottom un glued for a little ventalation.