My setup is 2.1V on the gate. A 330 Ohm load between Vdd and drain. And Source to ground.
I stepped Vdd from 0V to 9V in small increments and measured the current through Vdd to ground. Got currents in the 2mA range and saturated around 1.8V.
I'm trying to compare current against the Voltage drop across JUST the MOSFET but there's voltage drop across the 330 Ohm resistor too. How do I isolate just the Vds drop without measuring the drop across the resistor and PLEASE give an example calculation. I've already captured the current through the system at each increment AND the voltage on VDD (0-9V). I know that once I get to saturation voltage the voltage drop across the MOSFET will be minimal. Just trying to understand (also trying to understand Q-point but I suppose that's another question).