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How to Make Fans & LEDs Work on a Circuit

Circuits that use both fans and LEDs (light emitting diodes) usually have them wired in a parallel configuration. By wiring these devices in parallel, the higher current usage of the fan does not disrupt the lower current usage of the LED. Most LEDs use 600 milliamps of current or less. Fans often use current at or above 600 milliamps. A home computer is a good example of this. Computers have many different types of LEDs and fans.

Things You'll Need

2 6 volt LEDs
1 6 volt DC fan and motor
1 6 volt battery
Electrical wire
Wire cutters
Wire strippers

Instructions

- 1
  Set the 6 volt battery on the work table. Cut six pieces of wire about 4 inches long. Strip 1/2 inch of wire off the ends of each wire.
- 2
  Connect one end of the first wire to the positive terminal of the battery. Connect the other end of that wire to the positive terminal of LED #1. Connect a second wire from the positive terminal of LED #1 to the positive terminal of LED #2. Connect a third wire from the positive terminal of LED #2 to the positive terminal of the fan.
- 3
  Connect the negative side of the battery to the negative terminal of LED #1 using a fourth wire. Then connect the fifth wire between the negative terminals of LED #1 and LED #2. Finally, connect the sixth wire between the negative terminal of LED #2 and the negative terminal of the fan. All three devices should be "on" at this time.

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