p-n Junction Diode: Qualitative Theory of p-n Junction. P-n Junction as a Diode, Diode Equation. Volt-Ampere Characteristics, Temperature dependence of V I Characteristics. Ideal versus Practical Resistance levels ( static and dynamic0 Transition and diffusion capacitances. Diode Equivalent circuits, Load Line Analysis, Breakdown Mechanisms in semi conductor diodes. Zener diode characteristics.
UNIT- II: Rectifiers and Filters :
the p-n junction as a rectifier, half wave rectifiers, full wave rectifiers, bridge rectifiers harmonic components in a rectifier circuit. Inductor filters, capacitor filtlers, L SECTION filteres, d- section filters. composition of filters, voltage regulation using zener diode.
UNIT- III: Bipolar Junction Transistor :
the junction transitor, transistor current components. Transistor as an amplifier. Transistor construction. BTJ operation, BJT symbol, common base, common emitter and common collector configuration, limits of operation , BJT specification.
UNIT- IV: Transistor Biasing and Stabilization :
Operating point, the DC and AC load lines. Need for biasing . fixed bias . collector feedback bias. Emitter feedback bias, collector-emittor feedback bias. Voltage divider bias. Bias stability. Stabilization factors. Stabilization against variations in V BE and . Bias compensation using diodes and transistors . thermal runaway, thermal stability.
UNIT-V: Small Signal Low Frequency BJT Models
BJT hybrid model, determination of h-parameters from transistor characteristics. Analysis of a transistor amplifier circuit using h-parameters. Comparision of CB, CE, and CC amplifiers, configurations.
UNIT- VI: Field Effect Transistor
The Junction field effect transistor (construction, principle of operation, symbol) pinch of voltage, voltage-ampere characteristics, the JFET small signal model, MOSFET construction, principle of operation, symbol) , MOSFET characteristics in enhancement and depletion modes.
FET Common Source Amlifiere, Common Drain Amplifier, Generalized FET Amplifier, Biasing FET, FET as Voltage Variable Resistor, Comparision of BJT, and FET., Uni junction Transistor.
Special Purpose Electronic Devices: Priniciple of Operation and Characteristics of Tunnel Diode ( with the help of Energy Band Diagram 0 and Varactor Diode. Principle of Operation of Schottky Barrier Diode, SCR and Semiconductor Photo Diode.
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