S.N

Topic

Domain

Hours as per UGC

1

BASIC SEMICONDUCTING DEVICES
 pn junction diode, Capacitance of pn junctions, switching diodes,
 Clippers & Clampers, photoconductors,
 photodiode, light emitting diodes and liquid crystal display,
 Junction Field Effect Transistor (JFET) : Basic structure & Operation, pinch off voltage,
 single ended geometry of JFET, Volt Ampere characteristic, Transfer Characteristics.
 JFET as Switch and Amplifier.
 MOSFET: Enhancement MOSFET, Threshold Voltage,
 Depletion MOSFET, comparison of p & n Channel FET,
 SCR, 4 layer pnpn devices,
 Tunnel diode

Must Know

10

2

OPTOELECTRONIC DEVICES
 Radiative and nonradiative transitions.
 Solar Cell: basic characteristics, radiation effects and fill factor,
 Light dependent resistance (LDR), photodiodes,
 pin diodes, metal semiconductor, avalance photodiode,
 Light emiiting diodes (LEDs), semiconductor diode lasers
 Photo transistor, Temperature measurements: resistance thermometers, thermocouples,
 Thermistors.

Must know

10

3

OPERATIONAL AMPLIFIER
 Differential Amplifier: Circuit configuration,
 dual input balanced output different amplifier,
 Inverting and Noninverting inputs, CMRR,
 Operational Amplifiers: Block diagram, open and close loop configuration,
 inverting & noninverting amplifier, Opamp with negative feedback Voltage series feedback,
 Effect of feedback on closed loop voltage gain,
 Input resistance, output resistance, band width, output offset voltage,
 Measurements of Opamp parameters. Opamp Application: D.C. and A.C. amplifier, summing, scaling and Averaging amplifier,
 Integrator, Differentiator,
 Electronic analog computation comparator.

Must know
Nice to know

10

4

DIGITAL CIRCUITS
 Various Number system and their arithmetic: binary number system,
 2’s compliment, Octal number system, hexadecimal number system,
 BCD codes, Excess3 codes, Gray codes, Octal codes,
 Hexadecimal codes and ASCII codes: Digital (binary) operation of a system,
 Logic system, the OR gate, the AND gate, the NOT gate, the exclusive OR gate,
 De Morgan’s laws, the NAND and NOR diode transistor gates,
 Modified DTL gates, high threshold logic (HTL) gates, transistortransistor logic (TTL) gates output stages, resistance
 transistor logic (RTL) logic, direct coupled transistor logic (DCTL) gates,
 emitter coupled logic (ECL) gates, digital MOSFET circuits, complementary MOS (CMOS)
 logic gates, comparison of logic families,
 Karnaughamp (Kmap) up to four variables and its applications.

Must know
Nice to know

10
