Building Faraday Flashlight Help

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The discussion centers on building a Faraday flashlight, highlighting two main issues. The user is unable to charge a 16V 2200uF capacitor connected to a 12V DC motor, as the LED only lights up while the motor is actively turning. There is speculation that the capacitor's size may be causing the problem. Additionally, the user seeks guidance on calculating voltage production from moving a magnet through coils connected to a wave bridge rectifier. The conversation emphasizes troubleshooting circuit design and component selection for effective functionality.
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Homework Statement


I need to build a faraday flashlight and I have two problems.

Homework Equations


(1) When I use a 12V DC motor connected in parallel to a capacitor (16V 2200uf) and then to an LED assembly, I can't get the capacitor to charge. (2) If I wanted to use a magnet and coils connected to a wave bridge rectifier and then to a capacitor and LED, how would I calculate the amount of Voltage produces by moving the magnet?

The Attempt at a Solution


I've already built a flashlight with the DC motor, it is able to turn on the LED but the capacitor just does not charge. I've put in a switch between the capacitor and LED and all I can get it to do is light up when I'm turning the motor and the switch is on; when the switch is off I turn the motor but when I flip the switch on the LED doesn't light up. Could the problem be that my capacitor is too large?
 
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Can you post a schematic of your circuit?
 
circuit.jpg
 
I think you can see this http://www.lightflashlights.com/ . It's very well. And I think that it's very useful.
 
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