How to Wire a Capacitor to Run a Motor
- 1). Connect the positive terminal of a small hobby motor to the first terminal of a resistor. Connect the second terminal of the resistor to the positive terminal of the capacitor. Use a resistor in the 10K-ohm to 100K-ohm range at first. The capacitor should be in the 1- to 100-farad range. The key is to choose a capacitor that can store enough charge to start the motor. You also need a resistor large enough to slow that charge down until the motor recognizes more than just a pulse.
- 2). Connect the negative terminal of the capacitor to the first terminal of a single-pole, single-throw switch. Connect the second terminal of the single-pole, single-throw switch to the negative terminal of the motor.
- 3). Open the switch. Charge the capacitor by connecting the positive and negative terminals of a DC power source to the positive and negative terminals of the capacitor. Disconnect the power source from the capacitor once it is charged.
- 4). Close the switch. Observe how the motor responds. Experiment with the resistor size and the capacitor size to determine how the motor responds.