What is the constant forward voltage drop characteristic of a diode?

What is the constant forward voltage drop characteristic of a diode?

The voltage drop of the diode after forward conduction remains basically unchanged, but the following factors can cause slight changes in the voltage drop of the diode:

When the temperature increases, the pressure drop of the pipe will slightly decrease; When the temperature decreases, the pressure drop in the pipe will slightly increase.

When there is a significant change in the forward current, there will be a slight change in the forward voltage drop. When there is a small change in the forward voltage, it will cause a significant change in the forward current.

The temperature compensation circuit can be designed based on the small variation of diode voltage drop with temperature. Without understanding the characteristics of the diode when analyzing the temperature compensation circuit, the working principle of the circuit cannot be analyzed.