i would like to know if spinning a dc motor will produce electricity and if yes i would love to know if the direction of motion of the dc motor really matter i.e(clockwise and anticlockwise) thanks
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Yes, a typical brushed dc motor will act as a generator. You need a voltmeter attached to the motor leads to tell for sure which way to turn the shaft, as motors can be constructed to turn either direction. Most motors work equally well going clockwise or counterclockwise, so you just need to determine which lead is positive when you turn the shaft a particular direction.. Some motors are already marked with a red dot on one of the motor leads to indicate positive in the preferred turning direction. If you apply a dc voltage with the battery positive connected to the red dot, the motor will turn in the direction the manufacturer intended. Then If you turn the motor the same direction, the motor will become a generator, and the red dot will still be positive. You would have to spin it faster than the battery would turn the motor in order to charge the battery, assuming the battery was a rechargeable type.
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Actually, if you include a BRIDGE RECTIFIER in your charging circuit, direction of rotation (polarity) becomes unimportant. The bridge will determine the polarity of output.
You would then probably need to also have a voltage regulator to ensure the output suits your 'phone input.
The motor terminals are connected to the AC input connections of the bridge, and the output + is from the + terminal of the bridge, and the - from the - terminal of the bridge.
The bridge would provide protection from the phone battery trying to run the motor, but having regulator after it would probably negate that. So, a further series diode in the + line to the phone may be needed.
The motor would need to generate a voltage a little higher to overcome voltage drops in the extra components, but they should be worth it.
You would then probably need to also have a voltage regulator to ensure the output suits your 'phone input.
The motor terminals are connected to the AC input connections of the bridge, and the output + is from the + terminal of the bridge, and the - from the - terminal of the bridge.
The bridge would provide protection from the phone battery trying to run the motor, but having regulator after it would probably negate that. So, a further series diode in the + line to the phone may be needed.
The motor would need to generate a voltage a little higher to overcome voltage drops in the extra components, but they should be worth it.
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You just waste your time to spin a DC motor and expect it could charge a phone battery.