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# Zener Diode & Zener Voltage Regulator Calculator

## Zener Diode & Zener Voltage Regulator Calculator

Formulas and Equations for Zener Diode & Zener Voltage Regulator Calculator
Series Current
IS= VIN – VZ / RS….. (Ohm’s Law Again)
VL = VZ
∆VL = IZ x RZ
Output (Regulated) Voltage
VOUT= VIN – IR = VIN – (IZ + IL) / RS = (VIN – IS) / RS
IL = VL / RL
Zener Current
IZ = IS – IL
Output ripple
VR (OUT) VR (IN) x (RZ/RS)
Maximum Series resistance
RS (MAX) = RL (MIN) x [(VIN (MIN) / VZ) -1]
Maximum Series resistance
RS (MAX) = RL (MIN) x [(VIN (MIN) – VZ) / IL(MAX)]
Or Series Resistance
RS = (VL – Vout) / (IZ + IL) = (VL – Vout) / (IS)
Value of Resistor
R = [(VIN (MIN)– VOUT) / (IL + 10)]
Power of Resistor
RP = (VIN (Max)– Vout) 2­­ / R
Power of Zener Diode

ZP = (VIN(MIN) VOUT) / R) x VOUT

Enter value and click on calculate. Result will be displayed.
 Enter values:
 Max Input Voltage (VIN (Max)): Volts Min Input Voltage (VIN (Min)): Volts Output Voltage (VOut): Volts Load Current (IL): mAmp
Output:

 Zener: Volts Zener Power: Watts Resistance: (Ω) Ohms Resistance Power: Watts

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