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kashyap Group Title

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

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  1. theyatin Group Title
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    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. . .

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