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Thread: Condensor Fan control
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04-09-2003, 09:18 AM #1
Condensor Fan control
Has anyone heard of Condensor Fan control using single speed fan but using a 'wave clipping' technique to vary the fan speeds ?
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04-09-2003, 11:41 AM #2
What do you mean by 'wave clipping'?
All speed control modify the supply voltage / wave form in some manner.
Many of them use Triacs. Other forms use Hall Effect or stepping motors.
Some of the Japanese makers use a method that eliminates whole wave forms in a regular sequence.
You pays your money........
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buy silver surfer vaporizerLast edited by Argus; 07-02-2011 at 07:56 AM.
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04-09-2003, 11:59 AM #3
Yes, it uses Triacs - but I'm not sure how that works except that it clips the waves.
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07-09-2003, 01:33 PM #4
So can I use a normal light dimmer switch to control a condenser fan ?
Any opinions, statements and facts expressed in this message do not constitute legal advice in any shape or form and is given for a general outlook in nature. You are advised to seek appropriate and specific professional assistance from a regulated and authorised advisor for definitive advice.
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08-09-2003, 03:27 AM #5
Thanks Marc - Is the Diac like a Diode ?
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08-09-2003, 03:27 AM #6
Thanks Marc - Is the Diac like a Diode ?
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14-09-2003, 10:37 PM #7
A Zenner diode will only allow a set voltage to pass. On a 12 volt zenner, any voltage above 12 volt will be denied. These are used where a set voltage is required, say in a power supply or as a reference voltage.
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13-12-2003, 04:21 PM #8Originally posted by frank
A Zenner diode will only allow a set voltage to pass. On a 12 volt zenner, any voltage above 12 volt will be denied. These are used where a set voltage is required, say in a power supply or as a reference voltage.
On each power supply to an expensive device such as electronic thermostats, PCB's, electronic transformers for halogen lights.... we place varistors - which are very cheap (less then 1 € or 1 $) - to protect them for overvoltage.
It protects them also if the common (or neutral) fails for some reason (here we go again) in a 3 x 380 V +N.
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