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BrianG · 07.22.2006, 12:25 AM

I think what he is trying to do is send either 16.8v or 8.4v to the fan depending on the switch position. I agree; a regulator would be in order, but makes the circuit a little more complex to achieve a dual voltage. 16.8v is just too much for a 12v fan if that is what he has.

Personally, I would just get a 6v fan and hook it to the Rx pack. If he still wants a slower speed, I'd put a few diodes in series to bring the voltage down. It's crude, but very simple and easy to wire up.

	(#17)
BrianG RC-Monster Admin Offline Posts: 14,609 Join Date: Nov 2005 Location: Des Moines, IA	07.22.2006, 12:25 AM I think what he is trying to do is send either 16.8v or 8.4v to the fan depending on the switch position. I agree; a regulator would be in order, but makes the circuit a little more complex to achieve a dual voltage. 16.8v is just too much for a 12v fan if that is what he has. Personally, I would just get a 6v fan and hook it to the Rx pack. If he still wants a slower speed, I'd put a few diodes in series to bring the voltage down. It's crude, but very simple and easy to wire up.