The entire system may be enclosed inside a plastic housing as shown in the adjoining figure.
An optional battery may also be incorporated if continuous operation of the LED is felt necessary.
The following parts will be required for the construction of this generator:
Any Stepper Motor having a couple of windings of more than 50 Ohms (DC resistance) each.
Current Limiting Resistor – 47 Ohm, ¼ watt, 5%, CFR,
Diodes 1N4007 – 8 nos.
Capacitor 2200µF/10V – 2 nos.
IC 7805 = 1 no.
LED White High Efficiency 5mm – 1no.
Crank mechanism parts as shown in the diagram,
Small piece of general PCB,
Enclosure as illustrated in the diagram.