Experiment 4-POST LAb_200702037

# Experiment 4-POST LAb_200702037 - 5.45 V knee Zener current...

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Experiment 4: LEDS and Zener Diodes Experiment 4 LEDs and Zener Diodes Post-Lab Report Figure 1. Plot LED Current Vs Voltage in the Forward Region 0 2 4 6 8 10 12 -10 0 10 20 30 40 Vs (V) I Led (mA) Figure 2. Plot LED Current Vs Voltage in the Reverse Region 0 0.5 1 1.5 2 2.5 3 0 10 20 30 40 50 Vs (V)

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Experiment 4: LEDS and Zener Diodes Description Value Zener Resistance 665 ohms MinimumValueof Vs for Zener Breakdown 1.12 V knee Zener voltage, V ZK
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Unformatted text preview: 5.45 V knee Zener current, I ZK 7.3 mA Question 1: If V S = 12 V DC, choose the series resistor to give 20 mA through the red LED. 20 mA ocurs at 1.81 V => 12-1.81=10.19 V = voltage across the resistance V= IR => R=V/I = 10.19/(20*10^(-3))=509.5 => R= 509.5 ohms Figure 3. Plot Zener Diode Iz vs Vz. 2 4 6 8 10 1 2 3 4 5 6 Vz (V) Iz (mA)...
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## This note was uploaded on 02/07/2011 for the course EECE 312L taught by Professor Ghassandeeb during the Fall '07 term at American University of Beirut.

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Experiment 4-POST LAb_200702037 - 5.45 V knee Zener current...

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