That is not how it works stan. Input AC is directly converted to DC for PV and DC for the Power supply chips. RAW Track signal does go to an opamp to work in conjunction with audio amp to detect offset for bell/horn. Track AC also does go to the processor via signal. None of this is taught or known by ASC, and in most causes not chips that could be repaired. Regardless, how is it triggering the motor fet and relay with a small offset. From my perspective depending on how fast it moves with the offset signal present the voltage is getting to motor directly. We still do not know for sure which engine, nor how it is operated. So this is all speculation. I would like to see the board to actually observe the actions. G
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