So assume I have a bjt with the load (3.3k resistor) connected series between pwr and the collector. And I want to use a mosfet with a pwm to switch current on/off to the base of the Bjt, would both these circuit operate the same irl? Both topologies work the same in the circuit sim, but in reality would one work better? Its important that the current thru the load is switch fully off for half the cycle and i was wondering if by using the topology on the left, the base-emittor junction being parallel to the drain-source of the mosfet would lock the voltage across the mosfet (when on) at 0.7v to 1v and result in a higher rds-on so that some small current still enters the base preventing the bjt from switching fully off. Any advice is greatly appreciated.
