2007-09-23 22:09:00 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
It depends on the type of LED you are using (voltage, colour of light, etc.) You should figure on about 0.05W for each LED you want to use, but check the data sheet for the LED first.
Most solar systems have a battery that is trickle charged by the solar panel and this powers the bulb. This means that if a cloud passes the sun your bulb won't dim. Standard solar panels output 5V or 12V and the power depends on the size of the panel and the efficiency of its manufacture.
You should be able to get a solar panel that outputs a few watts cheaply at any hardware store.
2007-09-23 22:41:04 · answer #1 · answered by Anonymous · 0⤊ 0⤋
the average red LED will require about 40 milliwatts to operate. however in "malibu" light sets, the LEDs are off during the day when the solar cell recharges the battery. at night the the LED is switched on and runs off the battery and not the solar cell.
2007-09-24 11:36:23 · answer #2 · answered by lare 7 · 0⤊ 0⤋
Homemade Solar Power Videos - http://Solar.eudko.com/?QnT
2017-04-05 12:21:42 · answer #3 · answered by Princess 3 · 0⤊ 0⤋