Electromagnet Drive Circuit of Conveyor belt Diverter
This circuit drives magnets that divert shoes on a conveyor belt to sort packages to different lanes. My job was to do validation testing in worst case situations and make improvements so that it would comply with agencies such as UL and FCC. The validation test procedure is documented here. Initially we had trouble with radiated and conducted transmission. So we included resistors, capacitors, and diodes in the gate circuit of the power transistors and included snubber circuits across the Drain and Source of each transistor.
