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Can you power an LED diode using headphone wiring? Answered

If I were to cut up a pair of headphones for the wiring, would I be able to us them to power an LED diode and connecting one end of the chopped off wiring to the LED and the other to a 9V battery. Would it work? 

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-max-

3 years ago

Yup. Did something similar for a quadcopter LEDs on the arms.

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-max--max-

Answer 3 years ago

For a 9V battery, it would be good to have a few LEDs in series rather than just one or in parallel to maximize efficiency and less losses on a current limiting resistor. 3 red/orange/amber in series, or 2 white/violet/blue/green in series would proably work best.

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iceng

3 years ago

You can use a single two or three pin bi-directional RED / GRN LED and a couple of series resistors across working each earphone giving you mostly yellow varying intensity as audio volume varies... At low frequencies you may see a preponderance of red or green...

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ubdussamad

3 years ago

It'll work , you just gotta be careful about soldering cause they're hard to solder. The easy way to solder will be , first burn the end of the wire (coming out of the core red/green/golden) about a cm long. then brush out the carbon left from the burned insulation then solder it by using flux for perfection.

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steveastrouk

3 years ago

Yes, it will be fine. You need a resistor to protect the LED too.