Diode Circuit Analysis

ELEC 121

January 2004 ELEC 121 2

Diode Circuit Analysis• Diode Circuit Analysis

– Graphical Analysis using Loadlines– Analytical Analysis using KVL and KCL

• LEDs• Zener Diodes• Diode Resistance

– Static Resistance RD

– Dynamic Resistance rd

– Average Resistance rdav

• Diode Characteristic Curves• Simulation

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Series Diode Configuration

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Drawing a Load Line to Find the Q Point .

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Diode Circuit and Characteristics .

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Load Line Example

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Determining the Unknown Network Quantities

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Network Example

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Determining the Unknown Network Quantities

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Network Example

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Zener Diode Equivalents

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Basic Zener Regulator

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Determining the State of the Zener

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The Zener Equivalent Circuit Operation

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Zener Diode Regulator

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Determining V for the Regulator

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Q-Point for the Network

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Network in the conducting state