MC-40 controller troubleshoot

Discussion in 'General Electronics Chat' started by, Jan 29, 2012.


    Thread Starter New Member

    Jan 25, 2012
    To Trolly1; Thanks for your schematic for the MC-60. I been trying to troubleshoot a MC-40 controller that I plan to use on an industrial sewing machine. I'm okay with the SCR's, the opto coupler, the transistor, and the discrete components, but the DIP's ( one 14-pin and one 8-pin)are a mystery. They are labeled AN1324 and AN1358. My next attempt will be to hook controller, motor, and choke altogether and start probing with the oscilloscope, that is if I can a common ground.
    Thanks Again
  2. Georacer


    Nov 25, 2009
    Greetings! And welcome to AAC!

    Your post, originally found here ( has been moved into its own thread, where it will draw more responses. Notice that the thread you posted onto, was quite old.

    Please refrain from "hijacking" existing threads with tangent or off-topic questions. You can create new threads for new questions using the "New Thread" button on the upper left of the page.