How to Install a Capacitor for a Power Surge on a 12 Volt DC
- 1). Use the wire strippers to remove 1/2 inch of insulation off each end of the wire. Connect the positive terminal of the DC power supply to one of the two light bulb terminals. Use a red wire for this task.
- 2). Use a black wire to connect the negative terminal of the power supply to the vacant terminal of the light bulb holder. If the power supply is turned on, the light bulb should light up.
- 3). Identify the positive and negative terminals of the capacitor from the information that came with the capacitor.
- 4). Connect the positive terminal of the capacitor to the positive terminal of the light bulbholder. This will be the light bulb terminal to which the red wire is attached.
- 5). Connect the negative terminal of the capacitor to the negative terminal of the light bulb holder. This connects the capacitor across the two terminals of the light bulb holder. With this setup the capacitor will absorb and reduce the strength of the power surge.
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