How do I determine Knee voltage and knee current from a Id vs Vd plo.pdf

How do I determine Knee voltage and knee current from a Id vs Vd plot of a zener diode?
Solution
The voltage at which the current through the diode increases rapidly is known as the Knee
Voltage.
The reverse current at which the zener diode enters breakdown region, is called as Knee current..

1. How do I determine Knee voltage and knee current from a Id vs Vd plot of a zener diode?

Solution

The voltage at which the current through the diode increases rapidly is known as the Knee
Voltage.
The reverse current at which the zener diode enters breakdown region, is called as Knee current.