Three/Mono Phase Asynchronous Motor Simulator

When repairing stuff with a motor the first question is: “Is it the motor or is it the board that failed?” For a recent Inverter Air Conditioner board repair the following tool helped to answer that question.  <img class="alignnone size-full wp-image-35" src="/wp-content/uploads/2015/02/sch.jpg" alt="sch" width="180" height="203" /> Simulate the circuit The circuit can act as Induction Motor aka asynchronous motor . Inverter Air Conditioners which use AC motors take the 220V from the grid and turn them into about 150V three phase AC which drives the motor.