ZENER DIODE VOLTAGE REGULATOR CALCULATOR

Design a simple Zener voltage regulator. Calculate the required series dropper resistor and power ratings for both the Zener diode and resistor based on your input voltage and load current. Theory: A Zener regulator maintains a constant output voltage (Vz​) as long as the input voltage remains higher than the Zener voltage. The series resistor (Rs​) is critical to limit the current. The formula for the resistor is:

Where Iz​ is the minimum maintenance current for the Zener diode (typically 5mA).