[DeTomaso] Heater blower motor (3 speed specifically)

[SOBill at aol.com]

Tomas,
 
You should not connect power to more than one motor winding at a  time.
 
These are permanent magnet motors with motor and the field  windings are in 
series. Which field winding is receives power controls  the field strength 
and thus the speed of the motor.
 
As the motor rotates, it induces voltages in all the field  windings. If 
power is applied to more than one field winding the voltage induced  by the 
motors rotation will see a short circuit across one of the windings  and will 
definitely overheat that winding.
 
Have fun,
 
SOBill  Taylor
sobill at aol.com  

 




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