I've currently using a signal generator into the gate of a MOSFET to switch an inductive load. I've built a 555 circuit to replicate the signal generator output (TTL 5V 192kHz). When I connect this to the gate, the power supply driving the MOSFET limits the current and shuts itself down. I've tried adding a FWD to the output of the 555 but no success. Any idea how I can successfully replicate the signal generator output?