I am attempting to use an IC to monitor the value of an inductor in my circuit. During normal operation a voltage higher than the maximum tolerated value will be present across the inductor. There are intervals of time when the signal through the inductor will be turned off, and I would like to take inductance measurements during these times.
My question is this: How can I isolate the IC from the high voltages present when I am not actively measuring? Would a BJT work for this, or potentially cause interference with my measurements in some way? Is there a standard way to handle this sort of situation?