I use the dimmer that came with one of my led light sets, works well. I have a spare 1 or 2, if you can send me an address I can post you one, or collect if you are near Adelaide.
I use the dimmer that came with one of my led light sets, works well. I have a spare 1 or 2, if you can send me an address I can post you one, or collect if you are near Adelaide.
Thanks for the offer, but I think I've got somewhere in my electrical bits box
I have a 12v Rovin Ceiling Fan the only issue a single speed.
Is there a way to to replace the on /off switch with a speed regulator so slow the fan down ?
Maybe: the correct way to do it is by driving the motor with a variable width 12V square wave and I'm sure you can buy simple circuit boards from eBay for a few dollars to do this and they will work and you will have less breeze and all will be lovely... unless it catches fire!
The problem is that some motors have an internal fan blade attached to the main rotor, this fan provides cooling air for the motor and if you reduce its speed it may not drive enough air through the motor to cool it, hence the fire risk. Without knowing more about the motor I cannot assess that risk.
I would probably do it but I would run a series of tests first to produce a record of how hot the motor becomes:
Let the fan run for one hour then record ambient temperature and motor temperature.
Apply the new controller and repeat the above test twice:
1 - with the controller set to 50%
2 - with the controller set to 10%
Use your judgement to decide whether all is OK.
Ensure all caravan doors and windows are closed for all tests as that is probably a worse case for the fan.
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Edit:
WhenAreWeThere: a resistor!
You should know better, go and stand in the naughty corner for 10 minutes!
-- Edited by Mike Harding on Tuesday 11th of April 2023 01:01:21 PM
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"I beseech you in the bowels of Christ think it possible you may be mistaken"
Oliver Cromwell, 3rd August 1650 - in a letter to the General Assembly of the Kirk of Scotland
