Subject and UNIT: Basic Electrical and Electronics Engineering: Unit III: Analog Electronics
The application of a DC voltages, across the transistor terminals is called as biasing.
Subject and UNIT: Basic Electrical and Electronics Engineering: Unit III: Analog Electronics
A transistor three terminals (emitter, base and collector) left open, is called an unbiased transistor (or) an open-circuited transistor.
Subject and UNIT: Basic Electrical and Electronics Engineering: Unit III: Analog Electronics
A Bipolar junction transistor has three regions known as emitter, base and collector.
2 types
Subject and UNIT: Basic Electrical and Electronics Engineering: Unit III: Analog Electronics
The BJT is a main building block of all modern electronic systems. It consists if two back to back P-N junctions manufactured in a single piece of a semiconductor crystal.
Construction, Symbol, Circuit diagram, Biasing, Applications
Subject and UNIT: Basic Electrical and Electronics Engineering: Unit III: Analog Electronics
A zener diode is also called a voltage reference, voltage regulator (or) break down diode.
Construction, Symbol, VI Characteristic, Circuit diagram, Equation, Applications
Subject and UNIT: Basic Electrical and Electronics Engineering: Unit III: Analog Electronics
It is a two-terminal device consisting of a PN junction formed either in Ge (or) Si crystal.
Subject and UNIT: Basic Electrical and Electronics Engineering: Unit III: Analog Electronics
We connect the voltage source to a PN junction, such that positive terminal of the voltage source is connected to the N-region and negative to the P-region, the PN junction is said to be reverse biased.
Subject and UNIT: Basic Electrical and Electronics Engineering: Unit III: Analog Electronics
We connect voltage source to the PN junction, such that the positive terminal is connected to the P-region and negative terminal to the N-region, the PN junction is said to be forward biased.
Formation of Depletion Layer, Effect of Temperature, Biasing
Subject and UNIT: Basic Electrical and Electronics Engineering: Unit III: Analog Electronics
We join a piece of P-type semiconductor to a piece of N-type semiconductor such that the crystal structure remains continuous at the boundary.
N type and p type Semiconductors
Subject and UNIT: Basic Electrical and Electronics Engineering: Unit III: Analog Electronics
The electron-hole pairs are called thermally generated charge carriers. The number of these charge carriers is usually very small.
Energy band diagram, Structural diagram, Properties, Examples
Subject and UNIT: Basic Electrical and Electronics Engineering: Unit III: Analog Electronics
In an intrinsic semiconductors at room temperature current conduction is very less. To increase the conductivity of the semiconductor some suitable impurity (or) doping agent is added.
Subject and UNIT: Basic Electrical and Electronics Engineering: Unit III: Analog Electronics
Doping is the process by which adding an impurity into a pure form of semiconductor (intrinsic semiconductor) to improve its electrical characteristics (or) conductivity.