# Virtual University of Pakistan

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## PHY301 : Circuit Theory

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### Course Info

Physics

3

N/A

#### Instructor

PhD Nano Catalysts Engineering and Design, Nanocomposite materials
University of Manchester UK, COMSATS University

### Course Contents

• Introduction-Basic concepts • Basic electricity and circuit elements -The closed circuit -Open circuit -Short circuit -Power - Passive sign conventions • Resistance in Series and Parallel • Inductance - Capacitance - Ohm's Law - Power Dissipation in Resistance • Current sources and Voltage sources –Direct & Alternating quantities -Voltage dividers and Current dividers • Current divider and Voltage divider circuits • Kirchhoff's Laws- Kirchhoff's Current Law (KCL) • Application of Nodal Analysis • Application of Nodal Analysis - Reference node • Applications of nodal analysis-Super Node • Applications of Nodal Analysis - Super Node technique • Kirchhoff's Voltage Law (KVL) - Loop - Loop Analysis • Applications of Loop Analysis-examples • KVL equations and applications of Loop Method • KVL equations and applications of Loop Analysis-super mesh • Applications of Loop Analysis - Super Mesh Technique-examples • Applications of Loop Analysis - Super Mesh Technique - Coupling equation • Matrices and Determinants method, in solving circuit equations • Superposition Theorem and its applications in circuit network • Thevenin's Theorem and its applications in circuit network • Norton's Theorem and its applications in circuit network • Basic Semiconductor concepts • PN Junction Diode • Terminal characteristics of the Junction Diode - Forward bias region • Reverse bias region - Break down region - Analysis of Diode circuits • DC or Static Resistance - The constant voltage drop model - AC or Dynamic Resistance • Small Signal Model and its applications • Transformers - step up-step down- Applications • Negative Half Wave Rectifiers - Load voltage and current - Average Load voltage and current • Peak Inverse Voltage (PIV) - Full wave rectifier • Negative full wave rectifier - Full wave bridge rectifier • Filters - Clippers - Series Clippers • Parallel Clippers - Clampers • Diode logic gates (OR Gate) (AND Gate) - Voltage Multipliers - Half wave voltage doubler - Zener diode - Zener diode shunt regulator • Applications of Zener Diode shunt regulator - Light emitting diode (LED) - PIN Photodiodes-Tunnel Diode • Bipolar Junction Transistors (BJT) -Types, Modes of operation • DC biasing of Transistor -Characteristic of BJT-Load line analysis • DC Biasing BJT