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Author Topic: I need to control a fan speed  (Read 7092 times)

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Mosquito

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I need to control a fan speed
« on: March 04, 2008, 14:40:56 PM »
I need to control a fan speed and i am thinking of using a dimmer design that i found. This designs does not make clear if it can be used for controlling the fan. It is a 220V 50Hz fan. Should i test it?

kam

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Re: I need to control a fan speed
« Reply #1 on: March 04, 2008, 15:16:35 PM »
It is most likely impossible for a dimmer to be designed with the capability to control inductive load. An inductive load must have an appropriate output.

Get it in examples:

3566.pdf
triacd.pdf

tpone

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Re: I need to control a fan speed
« Reply #2 on: March 04, 2008, 16:30:39 PM »
Well, it looks like we are on a same level. LOL

actually i have already test it and i only can say... do not bother...

Andre

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Re: I need to control a fan speed
« Reply #3 on: March 04, 2008, 19:22:32 PM »
For low speeds it might work. If you get to high speeds... konflikt

ScubaCap

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Re: I need to control a fan speed
« Reply #4 on: March 04, 2008, 22:21:07 PM »
A dimmer is a dimmer and a controller is a controller.  :P

manley_V

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Re: I need to control a fan speed
« Reply #5 on: March 04, 2008, 23:53:36 PM »
Is it possible to control AC motor with PWM?

kam

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Re: I need to control a fan speed
« Reply #6 on: March 05, 2008, 08:16:57 AM »
Absolutely not. You can efficiently control DC with PWM but not AC

ScubaCap

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Re: I need to control a fan speed
« Reply #7 on: March 13, 2008, 00:19:26 AM »
What range do you want to control it and with what step? There are several ways to do it.

manley_V

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Re: I need to control a fan speed
« Reply #8 on: March 18, 2008, 00:02:33 AM »
What range do you want to control it and with what step? There are several ways to do it.

What do yo mean? I want to control it from 0 to max rpm proportionally.

But i think i have found a way to do it.

kam

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Re: I need to control a fan speed
« Reply #9 on: March 18, 2008, 21:29:26 PM »
Can you share it with us?