Category: Home Appliances

Question:
then the total power is smaller than the slowest speed Shi Hai?

Answer:
There are two ways to solve: First, the speed of the iron-core inductor to increase the inductance to increase the number of laps. But some fans of the governor is not an external inductor, but with the motor coil around together, not a dynamic of its own; second is not the original governor, with a bi-directional SCR stepless speed change device, the volume very small, inexpensive (with dimmer lamp using similar).

Answer:
part of energy will be spent in vain in the resistor.
stall speed will be reduced.
can be used to buck the inductor. such loss smaller. (the same as the ceiling fan.)
Series resistance after the speed, according to the size of resistance varies.
this approach is undesirable.
voltage drop after the motor efficiency will drop.

Answer:
not. Because the string of resistors would bar power are consumed by the resistor. Caused the fan not to switch. Proposes to add a fan in a 110V rectifier diode is working condition. This will do.