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Forum I have a 5v usb fan and I want to reduce the speed.

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I have a 5v usb fan and I want to reduce the speed.

rayjai over 12 years ago

I have a 5v usb fan and I want to reduce the speed. how would I do it?

the fans on my laptop cooler is too loud.

thanks

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YT2095 over 12 years ago +1

you could also use a simple 1n4001 diode in series with the positive wire, to drop .7 of a volt for each diode you use, doing it this way still lets you draw exactly the same amount of current (about 500ma…

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0 Catwell over 12 years ago

Rayjai,

Raymond day is correct. However, I would place a 100 ohm potentiometer in series with the fan and its power supply. This will drop the fan voltage between 1V and 5V.

Good luck.

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0 Catwell over 12 years ago

Rayjai,

Raymond day is correct. However, I would place a 100 ohm potentiometer in series with the fan and its power supply. This will drop the fan voltage between 1V and 5V.

Good luck.

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