First time building MSE, having problems.
November 11, 2010
I bought a solar cell from Solarbotics.com that has a standard Miller engine etched onto it ( http://solarbotics.com/products/scc2433b-mse/ ), then I got my hands on some transistors and capacitors to use. I soldered everything up onto the board, hooked up my power capacitor and a motor. I have my multimeter connected to the leads of the power capacitor and I can watch the voltage climb up to 2.6V and then stop. Its my understanding that when it gets to this point, the circuit is then supposed to dump all that voltage into my motor, but nothing happens!
I'm wondering if the transistor I substituted for the 1381 voltage trigger is to blame. I am using a TC54VC2102EZB, which according to its datasheet is supposed to trigger at 2.1V. But like I said, I can see my power cap go up to 2.6V and nothing happens.
Here are the values I'm using for the rest of the circuit, and a picture showing how I connected things to the solar cell:
C1 = 4700uF
C2 = .47uF
TC54VC2102EZB instead of 1381 for voltage trigger
Solar cell rated at 4.5V / 18mA.
Here is what my soldered circuit looks like: http://imgur.com/gVtD4.jpg
Any help is appreciated!