Zener Diode Regulation: Principles and Conditions, Lecture notes of Electrical and Electronics Engineering

The principles of zener diode regulation, detailing the relationships between voltage, current, and resistance in different circuit conditions. It explores how the zener diode maintains a stable voltage output despite variations in input voltage or load resistance. Three specific conditions: fixed voltage and load resistance, fixed voltage with variable load resistance, and variable voltage with fixed load resistance, providing insights into the behavior of current and voltage in each scenario. It is useful for understanding basic electronic circuits.

Typology: Lecture notes

2024/2025

Available from 10/29/2025

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03/12/2020
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Zener Regulation
Zener Regulation
By KVL @ loop A
𝑉
𝐼
𝑅𝑉
0
𝑅
𝑉
𝑉
𝐼
Also by KCL @ node x:
𝐼𝐼
𝐼
0
𝐼𝐼
𝐼
pf3

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Zener Regulation

Zener Regulation

By KVL @ loop A 𝑉ூ െ 𝐼ூ 𝑅 െ 𝑉௭ ൌ 0 𝑅 ൌ 𝑉ூ^ െ 𝑉𝐼 ௓ ூ

Also by KCL @ node x: 𝐼ூ െ 𝐼௓ െ 𝐼௅ ൌ 0 𝐼ூ ൌ 𝐼௓ ൅ 𝐼௅

Zener Regulation

Condition 1: VI and RL are fixed I (^) I and I (^) L are constant 𝐼ூ ൌ 𝐼௓ ൅ 𝐼௅

Zener Regulation

Condition 2: VI → fixed → I (^) I constant RL → variable → I (^) L varying 𝐼ூ ൌ 𝐼௓௠௜௡ ൅ 𝐼௅௠௔௫ 𝐼ூ ൌ 𝐼௓௠௔௫ ൅ 𝐼௅௠௜௡