<< Mentor Note -- Two threads merged into one >> As a project I have to design a switching circuit for a switched reluctance motor. I've picked all the components I need and I've tried to design the circuit. Open collector - 74LS06N Optocoupler - TLP 251 IGBT - stgp6nc60hd Does the circuit look okay and will it work or are there any additions to be made? Also, is the current limiting resistor I calculated correct for that optocoupler? Please don't suggest any improvements, I just want to know if that design will work.