Which one of these works good with a DC motor? I want the solar cell to move the motor, and the motor would me turning a 45 rmp record cd. Of these two solar cells, which one would most likely work better with my DC motor and turning a 45 rmp record cd?
3.0V/100mA
6.0V/50mA
2006-07-16 10:01:31 · 4 answers · asked by around_the_world 2 in Science & Mathematics ➔ Engineering
how about 1.0V and 400mA, 0.5V and 400mA, 0.5V 1000mA?
2006-07-16 11:38:36 · update #1
Home Depot sells a 10 Watt solar panel.. you can use it to feed a circuit that generates AC... it is easier to regulate speed of a motor if you use AC... because the solar electric panel will develop varying amounts of voltage depending upon the amount of sunlight.... if you use AC.. you can regulate it in frequency and voltage.
2006-07-16 11:34:09 · answer #1 · answered by ♥Tom♥ 6 · 0⤊ 0⤋
It really depends on the DC motor in question. If the resistance of the motor is less than 60 ohms, then the 3 volt one will give you the most current (and presumeably, therefore, the most speed). If the resistance of the motor is more than 60 ohms, the 6 volt one will give you the most current, and therefore, the most speed.
To get exactly 45 rpm, you may want to use a potentiometer in series with the solar cell and the motor, so that you can adjust the speed of the motor manually.
2006-07-16 11:04:31 · answer #2 · answered by extton 5 · 0⤊ 0⤋
Before you do anything, look at the Input plug for your CD. Perhaps you have an AC adaptor? Look at that. The solar cell you choose needs to at least provide that voltage at that current rating. Then, make sure you get a voltage regulator for your solar cell. The voltage can go way up when it is very bright, which could damage your CD player regardless of the current. The voltage regulator should be the component you choose first, and THEN the solar cell which can drive it.
2006-07-16 13:59:57 · answer #3 · answered by stvrob_63 4 · 1⤊ 0⤋
3.0V/100mA
2006-07-16 13:10:05 · answer #4 · answered by Anonymous · 0⤊ 0⤋