Zener Diode as a Voltage Stabilizer
The Zener diode of Zener Voltage, Vz is connected across the load RL across which the output is desired.
The series resistance R absorbs the output voltage fluctuations so as to maintain constant voltage across the load.
The constant voltage, Vz is maintained across the load as long as the input voltage does not fall below Vz.
The excess voltage is dropped across the series resistance, R. This causes an increase in the value of total current, I.
The Zener diode will conduct the increase in I while the load current remains constant..
Therefore, the output voltage remains constant irrespective of the changes in the input voltage.
Equations Based on Zener Diode:
Voltage Drop Across R = Ei - Eo
Current through R, T = Iz + IL
R = (Ei - Eo) / (Iz + IL)
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