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Diode Circuit Analysis
ENGI 242ELEC 222
1 February 2005 ENGI 242/ELEC 222 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
1 February 2005 ENGI 242/ELEC 222 3
Series Diode Configuration
1 February 2005 ENGI 242/ELEC 222 4
Drawing a Load Line to Find the Q Point .
1 February 2005 ENGI 242/ELEC 222 5
Diode Circuit and Characteristics .
1 February 2005 ENGI 242/ELEC 222 6
Load Line Example
1 February 2005 ENGI 242/ELEC 222 7
Determining the Unknown Network Quantities
1 February 2005 ENGI 242/ELEC 222 8
Network Example
1 February 2005 ENGI 242/ELEC 222 9
Determining the Unknown Network Quantities
1 February 2005 ENGI 242/ELEC 222 10
Network Example
1 February 2005 ENGI 242/ELEC 222 11
Network Example Output
1 February 2005 ENGI 242/ELEC 222 12
Half Wave Rectifier
1 February 2005 ENGI 242/ELEC 222 13
Half Wave Rectifier
1 February 2005 ENGI 242/ELEC 222 14
Full Wave Rectifier
1 February 2005 ENGI 242/ELEC 222 15
Full Wave Rectifier
1 February 2005 ENGI 242/ELEC 222 16
Full Wave Bridge Rectifier
1 February 2005 ENGI 242/ELEC 222 17
Full Wave Bridge Rectifier
1 February 2005 ENGI 242/ELEC 222 18
Zener Diode Equivalents
1 February 2005 ENGI 242/ELEC 222 19
Basic Zener Regulator
1 February 2005 ENGI 242/ELEC 222 20
Determining the State of the Zener
1 February 2005 ENGI 242/ELEC 222 21
The Zener Equivalent Circuit Operation
1 February 2005 ENGI 242/ELEC 222 22
Zener Diode Regulator
1 February 2005 ENGI 242/ELEC 222 23
Determining V for the Regulator
1 February 2005 ENGI 242/ELEC 222 24
Q-Point for the Network
1 February 2005 ENGI 242/ELEC 222 25
Network in the conducting state
1 February 2005 ENGI 242/ELEC 222 26
Zener Network Output
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