SEMICONDUCTORS. ELECTRONICS: The term electronics is originated from the word Electron. It was first applied to the study of electron movement and its.

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Presentation transcript:

SEMICONDUCTORS

ELECTRONICS: The term electronics is originated from the word Electron. It was first applied to the study of electron movement and its behavior. Many electronics devices are constructed which cover wide range of Industrial and military requirements. Recent advances in electronics are adopted in the field of communication.

APPLICATION OF ELECTORNICS 1.DIGITAL CIRCUITS 2.MICRO PROCESSOR 3.DIGITAL COMPUTERS 4.PHOTO ELECTRONS 5.LASER TECHNOLOGY

DIGITAL CIRCUIT

MICRO PROCESSOR

DIGITAL COMPUTER

PHOTO ELECTRONS

NANO TECHNOLOGY

SEMICONDUCTORS:  14th group elements are semiconductors except carbon.  Familiar semiconductors: 1.Silicon 2.Germanium 3.Tin Semiconductor compounds: gallium arsenide, indium antimonide,

What is silicon? Silicon is a nonmetal and it is semiconductor.

GERMANIUM

Why silicon is more widely used than germanium?

REASONS ARE:  First reason is that Si has a larger band-gap.  Second reason is that Si forms on its surface very easily.  Third reason that Si is widely encountered in nature in the form of sand, from which it is extracted by reduction with carbon.

DIODES

DIODE: A single crystal of semi conducting material whose one side is doped with donor impurity and the other side is doped with acceptor impurity forms a p-n junction diode or as semiconductor diode.

WHO INVENTED DIODE?

TYPES OF DIODE

RESISTER

APPLICATIONS OF DIODE Voltage regulation. In electrical engineering, particularly power engineering, voltage regulation is a measure of change in the voltage magnitude between the sending and receiving end of a component, such as a transmission or distribution line.

RECTIFIER

INVERTER

TRANSISTOR

TRANSISTOR: Transistor is a resistor that amplifies electrical signal passing through its input to output terminals. It is a three terminal semiconductor device.

WHO INVENTED TRANSISTOR? JOHN BARDEEN

WALTER H

SHOKLY

TYPES OF TRANSISTOR:

APPLICATIONS: AMPLIFIERS OSCILLATORS SWITCHING CIRCUITS

AMPLIFIER An amplifier, electronic amplifier or amp is an electronic device that can increase the power of a signal. An amplifier uses electric power from a power supply to increase the amplitude of a signal

OSCILLATORS An oscillator is a mechanical or electronic device that works on the principles of oscillation: a periodic fluctuation between two things based on changes in energy. Computers, clocks, watches, radios, and metal detectors are among the many devices that use oscillators.oscillation

SWITCHING CIRCUITS What is circuit switching in data communication? A type of communications in which a dedicated channel (or circuit) is established for the duration of a transmission. The most ubiquitous circuit-switching network is the telephone system, which links together wire segments to create a single unbroken line for each telephone call.

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