5K40.29 • DC Generators: CENCO DC Generator & Galvanometer

Photo of the Demonstration at the University of Texas at Austin.

Instructions / Notes:

• What was a CENCO DC motor has been converted to a DC generator with the addition of two permanent magnets on the sides.
• The rotating coils of the DC generator - when spun - provide less than 25 mA to the galvanometer.
• Rotate the center coils of the DC generator clockwise and the students will see a positive current on the projected Galvanometer.
• When the center coils are spun counter clockwise, a negative current flow is observed via the projected Galvanometer

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Demo Staff:

• Ensure you set up the motor with magnets on the side. It also has a small strip of blue electrical tape on the top to help with identification.

Photo of the Demonstration at the University of Texas at Austin.

Last updated on October 15, 2025