Windscreen wiper motor with three brushes

ycdbwycid · August 4, 2009, 4:45am

Hi all,

I always thought/assumed that brushed motors had two brushes in them. Mine has three. How does it work?

Cheers

Ycd

ignoblegnome · August 4, 2009, 5:00pm

Check the link below. It

Check the link below. It explains that most DC motors have 3 poles so the rotor doesn’t get stuck when positioned exactly between the magnets.

captaintuna · August 4, 2009, 5:23pm

wait…i think he was
wait…i think he was talking about brushes…as in: the motor has 3 pins sticking out of it

christhecarpenter · August 4, 2009, 7:22pm

The third pin…
The third pin probably deals with the reversing of the motor, the limits of the unit or the “parking” circuit.

christhecarpenter · August 5, 2009, 6:08am

The real question is…
What do you do with a tiger with 3-balls?

ycdbwycid · August 6, 2009, 5:25pm

well

It’s not the number of balls that matters, it’s the size !!!

christhecarpenter · August 6, 2009, 7:41pm

No…
You walk the tiger and pitch to the elephant.

ignoblegnome · August 7, 2009, 3:27pm

LOL. That was a long wait

LOL. That was a long wait for the punchline.

Thanks, CtC.