by astianseb I have very simple setup: - 1k resistor - zener diode - 9V power Wanted to run DC sweep to observe how voltage and current will behave when I increase voltage from 0-9V. Current behaves properly as Zener diode is blocking current until it reaches Vz - hence 0-5V - we see zero and from 5-9V current is growing linearly according to Ohm law. Voltage is weird….as it grows from zero on resitor.