I noticed this related question about driving a mosfet with an optoisolator. However, I may wind up using IGBTs or SCRs, which brings me to the next related question about how to use IGBTs as switches. Based on the answers to those questions, I should be able to use 8 optocouplers (one on either side of of the gate of each IGBT/SCR) to drive one or more of these devices. I already have plenty of optoisolators with some 5000V isolation voltage.
I was wondering if I could safely use those to drive one or more of the above devices, or possibly a general class of devices.
I could infer an answer and I suspect it to be yes, but I wanted to be very sure of how to use one of these devices before I shell out the money or tinker with the voltages they can put out. If the answer is no, what would recommend using to drive these devices?