# Zener Voltage Calculator, Formula, Zener Calculation

## Zener Voltage Calculator:

Enter the values of resistor voltage drop, Vr(V) and supply voltage, Vs(V)­ to determine the value of Zener voltage, Vz(V).

 Enter Supply Voltage: V Enter Resistor Voltage Drop: V Result – Zener Voltage: V

## Zener Voltage Formula:

Zener voltage (Vz) is a critical concept in electrical engineering, particularly in the design and application of Zener diodes for voltage regulation.

A Zener diode allows current to flow in both directions, but it is specifically designed to conduct in the reverse direction when a particular reverse voltage, known as the Zener voltage, is reached.

This characteristic makes it useful for stabilizing voltage in power supplies.

Zener voltage, Vz(V) in volts can be calculated by subtracting the resistor voltage drop, Vr(V) in volts from the supply voltage, Vs(V) in volts.

Zener voltage, Vz(V) = Vs(V)­ – Vr(V)

Vz(V) = zener voltage in volts, V.

Vs(V)­ = supply voltage in volts, V.

Vr(V) = resistor voltage drop in volts, V.

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### Zener Voltage Calculation:

1. Calculate the Zener voltage in a circuit with a supply voltage of 12 volts and a resistor voltage drop of 2 volts:

Given: Vs(V)­ = 12V, Vr(V) = 2V.

Zener voltage, Vz(V) = Vs(V)­ – Vr(V)

Vz(V) = 12 – 2

Vz(V) = 10V.

1. Suppose a circuit has a supply voltage of 24 volts and the Zener voltage is 18 volts. Calculate the resistor voltage drop:

Given: Vs(V)­ = 24V, Vz(V) = 18V.

Zener voltage, Vz(V) = Vs(V)­ – Vr(V)

Vr(V) = Vs(V)­ – Vz(V)

Vr(V) = 24 – 18

Vr(V) = 6V.

### Applications and Considerations:

• Voltage Regulation: Zener diodes are commonly used for maintaining a stable voltage across a load.
• Protection Circuits: They protect sensitive components from overvoltage conditions.
• Clipping Circuits: In signal processing, Zener diodes can clip voltage peaks to a desired level.