Water-cooled MOSFETs! I've heard these machines have various problems, but you have to respect the innovation that these engineers have shown.
I don't need to fix this one :-)... but I'd like to hear from anyone who's successfully hacked the module to use it for another purpose... It looks like a dual H-bridge driving a whopping stepper motor direct from the rectified mains... is my guess right? That motor must have huge torque to agitate the wash load.
Clifford Heath.
You are right about the huge stepper motor.
There was a series of articles in SC a while back on how to use it as a wind driven alternator. Didn't have any information on the control module though.
Dave
It's not a stepper, and it is actually a 3-phase H-bridge.
Yup
Thats the drive. I thought the motor itself was a brushless DC type?
water cooled mosfets are fine until the water is disrupted mid cycle (tank pump stopped) and mosfets cooked themselves, was an old model, probably early 90's, apparently no protection for loss of water flow.
Have something to add? Share your thoughts — no account required.
Ask the community — no account required