Help with Electric Motor

sounds like a DC motor to me! must be a Diode or bridge rectifier somewhere!.

"Mr Ron"

Does it have only two terminals ?

Does it reverse its rotation ?

Is it magnetic?

..... Phil

Nos markewd on side 624103 240V CC CLF 49921 MPC-1-5174 Unit it also powered by 240V supply.

Yes with 2 small smoothing caps grounding to its body.

Yes to drive roller up and down.

Ah, No, doesn't appear to be.

TIA

"Mr Ron" Phil Allison

Approximately how many segments are there?

This will synch it in relation to voltage.

...... Phil

"Phil Allison"

How about " cinch " ?

..... Phil

Yes

Ta

-- Terminal_Crazy

Mitch - 1995 Z28 LT1 M6 terminal snipped-for-privacy@sand-hill.freeserve.co.uk Lancashire England

"Terminal Crazy"

But one of your replies does NOT fit - ie that it reverses direction of rotation.

To make such a motor reverse direction requires internal connections to be reversed and ideally ( to get the same torque) the brushes to be re-oriented in relation to the commutator segments.

In any case, the motor is a specially built unit to go with the garage door.

You may find a similar size motor inside a small hair dryer - but be careful cos many of them use low voltage DC motors operating from a tap on the air heating coils.

.... Phil

:In article , : Phil Allison wrote: :> "Mr Ron" : :> > The original motor is 240V. 2.5 Inch Dia & 3Inch Long. :> > It has terminals marked + - and brushes. : : :> ** How do you know it is 240 volt??

:Nos marked on side : 624103 240V CC CLF 49921 MPC-1-5174 :Unit it also powered by 240V supply.

With this information we now know the manufacturer. Why not get in contact with them.

"Mr Ron"

Try placing it near a compass or a CRT screen.

..... Phil

if it has only 2 terminals and is reversible it's a DC motor.

a bridge rectirier and an centre-off DPDT momentary switch.

look for a boilerplate or makers mark on the motor.