The scope trace alternates between 96.7 and 100.2 V. I believe you expected it to alternate between 0V and 100V.
I think it will resemble that if you were to add a load, with the other end connected to zero ground.
Since a voltage will appear across it, this may change the gate-to-source differential...
which may change the internal resistance of the mosfet...
which may change the voltage on the load, etc.
Try connecting the Source pin of MOSFET to gnd. Right now i can't figure where it's going. Whats the <arrow> and '+' symbol mean ??
And a Voltmeter is certainly not gnd.
And of course some sort of load R on the drain going to the supply positive.
you can try your voltmeter (an actual physical one.. not a simulated one) between Drain and Gnd. Set it to read DC volts. This will give you an approximate idea of the average voltage.
you can try your voltmeter (an actual physical one.. not a simulated one) between Drain and Gnd. Set it to read DC volts. This will give you an approximate idea of the average voltage.