power window motor

[jaahgray]

We have used power window motor.When we try connect the circuit with battery 12v,7ah the motor does not rotate but if we connect it with 12v votage regulator circuit the motor rotate but slowly.Could you explain why the battery 12v does not support with this circuit.

[ABSF]

Motor circuit.png

How much current is needed to rotate this motor?

When you connected 12V regulator to the motor and when it runs slowly....did you measure the voltage across the motor?

Your circuit looks OK and I think it should work. Only thing to watch out is the current rating of the relay contacts must be heavy enough not to burn out by the high current. You also forget to put a diode across the relay coil to prevent back emf that might fry your transistors.

Allen

[robosang]

Show the actual hardware, I think there must be something wrong some place. Schematic does not show everything.