room/desk fan variable speed control

Old 12-08-04, 10:02 PM
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room/desk fan variable speed control

Can anybody advise me about an easy way of implementing some sort of variable speed control for a regular room/desk fan?
In simpler terms, if I have a fan such as this:
How can I add an external dial or knob so that the fan rotation speed can be adjusted incrementally instead of the 3 different speeds applied by using the 3-step switch?

I'd prefer to have the ability to adjust the speed to a lower speed than when the fan is on the low speed setting (1 instead of 2 or 3).
Old 12-09-04, 12:45 AM
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Two words for you: Forget about it. You will burn up the motor.

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