# How do you slow down an AC motor?

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## Can AC motor speed be controlled?

Yes, you can use voltage to control the speed of an AC motor. NOTE: top speed is ~1500 r/min because the input power is at 50 Hz. For 60 Hz motors, the 1500 r/min would be 1800 r/min.

## Can I use a resistor to slow down a AC motor?

You CAN use a resistor, but understand all you are doing is dumping power out the resistor to drop the voltage to the motor. If you want to go really slow, the resistor method will probably cause the motor to stall way before you reach your desired RPM.

## How do I slow down the rpm on my AC motor?

When driving a fan with a shaded pole or permanent split capacitor (PSC) motor a variable resistor is the simplest way to reduce speed. It will reduce the voltage and reduce current slightly rather than increase it. It will reduce the power used, but not as much as other methods.

## Can I use a dimmer switch to control AC motor speed?

No you can’t use a dimmer switch to control a DC motor. A dimmer uses diac and triac and only works with AC which commutates the triac OFF at the end of every half cycle.

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## Can you control the speed of a single phase motor?

Speed control of single-phase induction motors is desirable in most motor control applications since it not only provides variable speed but also reduces energy consumption and audible noise. … Using microcontroller-based control systems, one can add speed variation to the system.

## How do you gear down a motor?

The “reduction” or gear ratio is calculated by dividing the number of teeth on the large gear by the number of teeth on the small gear. For example, if an electric motor drives a 13-tooth pinion gear that meshes with a 65-tooth gear, a reduction of 5:1 is achieved (65 / 13 = 5).

## How do you make a motor go faster and slower?

ANSWER: In order to make the motor spin faster or slower you must increase or decrease the strength of the magnetic field. This is done by either changing the amount of current running through the motor or varying the distance of the permanent magnets from the motor.

## How do you slow down a brushless AC motor?

As I understand it, given that it is a brushless AC motor, the only way to slow it down to a calculated speed is to rapidly turn it off/on with use of a 555 IC.