H4P1: Zener Regulator
A non-ideal voltage source can be modeled by a series combination of an ideal DC voltage source, a resistance, and a small-signal voltage source. The small-signal source is included to represent the noise inherent in the source. This model is illustrated in the figure below:

In practice, connecting the non-ideal voltage source to a load may result in undesirable effects due to the noise voltage vo appearing across the load.

This problem studies such effects and how a Zener diode may be used to ameliorate the problem.

Assume that VI=13.0V, RIN=1kΩ, and vi=20.0m

Question

H4P1: Zener Regulator
A non-ideal voltage source can be modeled by a series combination of an ideal DC voltage source, a resistance, and a small-signal voltage source. The small-signal source is included to represent the noise inherent in the source. This model is illustrated in the figure below:

In practice, connecting the non-ideal voltage source to a load may result in undesirable effects due to the noise voltage vo appearing across the load.

This problem studies such effects and how a Zener diode may be used to ameliorate the problem.

Assume that VI=13.0V, RIN=1kΩ, and vi=20.0m

anonymous · Answer

for a non ideal voltage source zener diode can be used as voltage stablizer. . .|dw:1349092003894:dw|
zener diode is reverse biased and pparaallel to load resistance ( say a bulb)
and it acts as near perfect insulator upto zener breakdown thus when a high voltage current come into circuit and it exceeds zener voltage
zener diode breasks down and let excessive voltage through it and save the load. . .