Let's design IR control Board

[Farhan (Farhan Ashraf)]

Making a reliable ceiling fan regulator

Commercial ceiling fan regulators have been extremely unreliable. While the older ones used triacs, the newer ones merely use a combo of capacitors to divide the voltage being supplied to the motor. If the capacitors are not of excellent quality they will fail resulting in poor speed control. This I have observed happening, but never got around to analysing the capacitor failure mode. In the case of triac speed controllers most use a 600v Peak Inverse Voltage (PIV) rated triac. PIV is the volta…