EEE 167 – Basic Electrical and Electronic Circuits
(Jan 2023)
Week 4 : Diode
Microelectronic Circuits (7th Edition) by A. S. Sedra and K. C. Smith, Oxford University Press
B ANGLADESH U NIVERSITY OF E NGINEERING AND T ECHNOLOGY
D EPARTMENT OF E LECTRICAL AND E LECTRONIC E NGINEERING
Course Outline
Content
DC
DC
Reference
Book
T1
Topic
Introduction: Circuit, Charge, Current, Voltage, Power, Passive Sign Convention, Independent and dependent
source
Basic Circuit Laws: Ohm’s Law, Nodes, Branches, Loops, Mesh, Series and parallel elements, Kirchhoff’s Voltage T1
law, Kirchhoff’s Current law, Voltage and current division law, Wye-delta transformations
DC
Circuit Theorems: Nodal and mesh analysis, Supernode, Supermesh, Source transformation, Linear Circuits,
Superposition principle, Thevenin’s and Norton’s theorem, Maximum power transfer
T1
AC
Sinusoidal Ciruits: Instantaneous current, voltage and power, effective current and voltage, Phasor algebra,
Sinusoidal single phase RL, RC and RLC circuits, Circuit laws for sinusoidal circuits, AC circuit analysis
T1
AC
AC Systems: Instantaneous and average power, Power factor correction, Balanced three phase circuits
T1
Diode
Semiconductor diodes: Semiconductor material and properties, pn junction diode, DC analysis and models,
single phase rectification, Zener diode circuits, Clipper and clamper circuits, DC power supply
T2
BJT
Bipolar Junction Transistor (BJT): Structure and operation of BJT, DC analysis of BJT circuits, biasing, DC and
AC load lines, BJT linear amplifiers- CE amplifiers, CC and CB amplifiers
T2
EEE 167 – Basic Electrical and Electronic Circuits
Prepared by: Ramit Dutta
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Week 3 Overview
EEE 167 – Basic Electrical and Electronic Circuits
Prepared by: Ramit Dutta
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Modeling diode forward
characteristics (Constant
voltage drop model)
• 𝑣𝐷 = 0.7 𝑉 for 𝑖𝐷 > 0
• Easy to use
• Very popular
• Time saving
EEE 167 – Basic Electrical and Electronic Circuits
Prepared by: Ramit Dutta
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Example
EEE 167 – Basic Electrical and Electronic Circuits
Prepared by: Ramit Dutta
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Modeling diode forward characteristics
(Ideal diode model)
• 𝑣𝐷 = 0 𝑓𝑜𝑟 𝑖𝐷 > 0
• Good for
distinguishing
conducting and nonconducting diodes
• Good for determining
approximate diode
current for very high
𝑉𝐷
EEE 167 – Basic Electrical and Electronic Circuits
Prepared by: Ramit Dutta
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The Small Signal Model
EEE 167 – Basic Electrical and Electronic Circuits
Prepared by: Ramit Dutta
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Example
EEE 167 – Basic Electrical and Electronic Circuits
Prepared by: Ramit Dutta
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Solution
EEE 167 – Basic Electrical and Electronic Circuits
Prepared by: Ramit Dutta
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Use of the Diode Forward Drop in Voltage
Regulation
EEE 167 – Basic Electrical and Electronic Circuits
Prepared by: Ramit Dutta
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Example
EEE 167 – Basic Electrical and Electronic Circuits
Prepared by: Ramit Dutta
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Solution
EEE 167 – Basic Electrical and Electronic Circuits
Prepared by: Ramit Dutta
12
Solution
EEE 167 – Basic Electrical and Electronic Circuits
Prepared by: Ramit Dutta
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Zener Diodes
EEE 167 – Basic Electrical and Electronic Circuits
Prepared by: Ramit Dutta
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