Regulate an AC table fan?

Ryssen · 14th March 2010, 09:20 PM

How do I regulate an AC 220v table fan from 0-100%.
Schema?

gmphadte · 24th March 2010, 07:20 AM

Triac based fan regulators are readily available in the shops.

cliffforrest · 24th March 2010, 08:09 AM

Quote:

Originally Posted by Ryssen

How do I regulate an AC 220v table fan from 0-100%.
Schema?

Google "ac fan speed controller". There are lots of hits.

You cannot use a standard AC light dimmer because of the voltage / current phase difference in an inductive load.

moray james · 24th March 2010, 03:21 PM

Analog Fan Speed Control | Free Circuit Diagram

cliffforrest · 24th March 2010, 07:17 PM

Quote:

Originally Posted by moray james

Analog Fan Speed Control | Free Circuit Diagram

That is for 12V DC fans, as used in PCs, for example.

OP is looking for mains DESK fans 110/230 AC.

leadbelly · 24th March 2010, 08:21 PM

Don't know what level of performance you are looking for, but look to the TT guys for cheap techniques: make a Wien Bridge oscillator with a power opamp and use a stepup transformer at the output to step up the voltage to 220VAC.

14th March 2010, 09:20 PM	#1
Ryssen diyAudio Member Join Date: Dec 2003 Location: Sweden--> Here	Regulate an AC table fan? How do I regulate an AC 220v table fan from 0-100%. Schema? __________________ Regards Åke

24th March 2010, 03:21 PM	#4
moray james diyAudio Member Join Date: Aug 2003 Location: Calgary on the Bow	Analog Fan Speed Control \| Free Circuit Diagram __________________ moray james

24th March 2010, 08:21 PM	#6
leadbelly diyAudio Member Join Date: Dec 2002 Location: Calgary, Alberta	Don't know what level of performance you are looking for, but look to the TT guys for cheap techniques: make a Wien Bridge oscillator with a power opamp and use a stepup transformer at the output to step up the voltage to 220VAC. __________________ Aerodynamics are for people who can't build engines. Enzo Ferrari

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24th March 2010, 07:20 AM	#2
gmphadte diyAudio Member Join Date: Jul 2003 Location: Dona paula, Goa	Triac based fan regulators are readily available in the shops.

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