Variable Zener Circuit

A zener diode acts like a normal diode, blocking current when it is reverse biased until a threshold voltage is surpassed, then it conducts Zener diodes are often used in voltage regulators.

The circuit below simulates a zener diode and is programmable with a resistor divider network. The zener voltage is equal to:

Vz= (R2*V)/(R1+R2)+Vbe

Where Vbe is the voltage drop from the emit to the base of the transistor, and which is normally about 0.6V

Variable Zener Schematic
Variable Zener Schematic

Water Level Sensor


© Copyright 2019 Daycounter, Inc. All rights Reserved. There is no guarantee for any information on this website. Use at your own risk.