Electric motor with odd voltage

Thread Starter

kemplinr

Joined Jul 8, 2010
8
The curious novice here again. I came across a motor with a power requirement of "AC 9V" (please see photos). I can understand DC 9v, but AC at 9Vs? What kind of power supply would this motor require without frying the insides?

IMG_3362.jpgIMG_3363.jpg
 

MaxHeadRoom

Joined Jul 18, 2013
23,953
I think you will find those in MicroWave turntables, they are in series with another load in order to get the 9v.
This one is 21v

1632678688792.png
 
Last edited:

Irving

Joined Jan 30, 2016
2,322
The fact that the TS's motor is marked for one direction only (CW) suggests this is a shaded pole motor rather than the more generic synchronous motor shown in post #3.
 

MaxHeadRoom

Joined Jul 18, 2013
23,953
The fact that the TS's motor is marked for one direction only (CW) suggests this is a shaded pole motor rather than the more generic synchronous motor shown in post #3.
It could well be a synchronous motor as used in the older clocks, they had a spring start to guarantee direction.
I have seen them where the flick start fails and the clock is running backwards! ;)
 

MaxHeadRoom

Joined Jul 18, 2013
23,953
I found the identical motor on the Bringsmart website and they manuf the RPM/Voltage to suit :
Bringsmart TYC-50 Synchronous Motor 0.9 ~ 70rpm Permanent MagnetAC 5V, 6V, 9V, 12V, 24V, 110V, 220V 4W CW/CCW

1632684064226.png
 

Ian0

Joined Aug 7, 2020
3,785
The fact that the TS's motor is marked for one direction only (CW) suggests this is a shaded pole motor rather than the more generic synchronous motor shown in post #3.
They also used a clutch which only allowed it to move one way. Crouzet used to make a lot of them, they could be specified to go clockwise, or anticlockwise depending on which clutch they fitted.
We used them for disco lighting effects, and they couldn't understand why we wanted them without the clutch so that the direction they would go would be random.
 
Top