Crank Motor Voltage

Project Number: 27

Description: Modify the preceding circuit into this one. Set the meter (M6) to the 5V setting. Set the slide switch (S5) to position C and watch the voltage on the meter when the hand crank spins. Set the slide switch to position B to disconnect the battery. Turn the crank handle counter-clockwise and see how much voltage you generate. You can switch the meter to the 50mA setting to see how much current you produce when you spin the crank. Set the meter back to the 5V setting and the slide switch back to position C. While it is spinning, CAREFULLY AND WITHOUT USING TOO MUCH FORCE, try to turn the crank in both directions. Feel how much easier or harder it is to turn the crank when the battery voltage is helping or opposing you. USING EXCESSIVE FORCE MAY DAMAGE THE HAND CRANK!

Snappy: The motor in the hand crank is different from the M4 motor, but similar. Did you see how much more voltage and current you can generate using the hand crank than with using the M4 motor?