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Circuit to amplify the current from a motor used as gen.

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roxfav

New Member
Hi,
i am trying to use motor as a generator and i have used the mechanism of a wall clock to rotate the shaft of a 12V motor the prob is that the current is too less to light a bulb and the voltage obtained is varying.
:( Need a circuit to amplify this current to light a bulb(2.2V 80mA).
Please help
thanking u
roxfav
 

Nigel Goodwin

Super Moderator
Most Helpful Member
roxfav said:
Hi,
i am trying to use motor as a generator and i have used the mechanism of a wall clock to rotate the shaft of a 12V motor the prob is that the current is too less to light a bulb and the voltage obtained is varying.
:( Need a circuit to amplify this current to light a bulb(2.2V 80mA).
Please help
thanking u
roxfav
You can't amplify something without providing external power to it, which would rather spoil the object of the exercise.

Two very obvious points come to mind:

1) How fast is the motor spinning, using clock mechanics to drive it doesn't sound very quick.

2) Why not use a 12V bulb, as it's a 12V motor - I'm presuming it's because the motor is only turning very slowly?.
 
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