Hi guys i am using a cw motor which dosent have leads except for 2 holes in the PCB sticking out and i dont know which one is negetive and which one is positive, plz help me.

 

what is a cw motor? what voltage, current does it need?

 

clockwise??

 

Did you buy it from these people?

http://businessnetwork.co.uk/business-directory/lincoln/c-w-motor-co

Or perhaps these guys?

http://www.cw-motor.com/en/index.asp

Seriously though, why not just post a picture, and then people will be able to help more easily.

 

Heres how to work it out. Put one multimeter lead on to the output shaft of the motor & then check each conection with the other lead, meter set on ohms. The lowest reading will be the negative conection. (Ive asumed by his description its one of these motors)

 

Debe, where is the black lead connected?

 

Black lead is conected to the motor drive shaft, as these motors are surounded by rubber insulation inside & the out side shell is quite often not conected to the motor shell.

 

A few pics of whats in these motors & they are electronic speed control & adjustable. Normaly purchased in the voltage required & in CW or CCW. They can be reversed by dismantling & unsoldering the PCB from motor & shifting 180Deg & resolder & reassemble.

 

Thx everyone for the advice the motor is the same type debe has and it is a 9v dc motor.