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OpenSpecEngineering

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Zener Voltage Regulator

Series resistor for a simple zener shunt regulator, Rs = (Vin − Vz)/(Iz + Iload). Also reports the resistor and zener power dissipation for rating purposes.

Rs Vz Load Vin
Rs drops the excess voltage; the zener holds the load at Vz as long as it stays reverse-biased in breakdown.

Solution

History