Repair help

Discussion in 'General Electronics Chat' started by Douglas Baringer, Sep 24, 2013.

  1. Douglas Baringer

    Thread Starter New Member

    Sep 24, 2013
    1
    0
    i need help installing a variable speed circuit board in a craftsman scroll saw. btw, sears is no help at all. there are 4 wires i need to connect. black from the on-off switch, black to the motor, white fron the power cord and white to the motor. the markings on the circuit board are as follows: L & N which are both white wire connections. OUT - & OUT + which are both for black wires. can anyone help me with this?
     
  2. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,515
    2,369
    Normally these are simple triac controllers with the white and black supply in, white usually goes to white or straight through to the motor via the trigger board and the black goes to the trigger circuit and the other motor lead outputs from the trigger.
    Motor Polarity does not usually matter as these are Universal motors.
    Max.
     
  3. #12

    Expert

    Nov 30, 2010
    16,262
    6,768
    Maybe like this:
     
Loading...