My ceiling fans date from the 1950s. They are controlled by a dial that progressively connects more (or less) resistance in series. At the lowest speed setting, the total resistance is 260 ohm as read by a DC multimeter.
I want to convert to capacitive controllers. What uF rating should I use?
I’m on 240v, 50Hz (Australia).
If I convert using the formula C = 1/2/Pi/50/R I get about 12uF as equivalent to 260 ohm. I would need a C value of 24uF to replicate a mid setting on the resistor.
But, fan controllers on the market have C values of 1uF up to 6 uF which is much less.
So I am wondering if I am doing something wrong with the calculation? Or is it because the fans are so old?
Thanks!
I want to convert to capacitive controllers. What uF rating should I use?
I’m on 240v, 50Hz (Australia).
If I convert using the formula C = 1/2/Pi/50/R I get about 12uF as equivalent to 260 ohm. I would need a C value of 24uF to replicate a mid setting on the resistor.
But, fan controllers on the market have C values of 1uF up to 6 uF which is much less.
So I am wondering if I am doing something wrong with the calculation? Or is it because the fans are so old?
Thanks!