Electronics is the part of physics and technology and it derived from the electrons mechanics that deals with controlling of current through semiconductor. Electronics has made tremendous advancement during last few decades and gradually life involves the use of electronic devices.
The following branches of electronics
1: Digital electronics
2: Analog electronics
3: Microelectronics
4: Nanoelectronics
5: Optoelectronics
6: Power electronics
7: Bioelectronics
8: Integrated Circuits
9: Semiconductor Devices
10: Telecommunication
11: Audio electronics
What is Electronics devices?
The device which controls the flow of electron is called electronic device. A device is made by utilising and controlling the laws of electron motion in a vacuum, gas or solid. These device are the main building blocks of electronics circuits. Electronics devices mostly in small size and gathered together in packages.
Some example of electronics devices:
Inductor, capacitor, resistors, potentiometers, semiconductor discrete devices, electroacoustic devices, optoelectronic devices, sensors, switches, electronic display device, micro motors, printed circuit board (PCB), piezoelectric, integrated circuits, etc.
Classification of electronics components:
1: Passive components:
Passive components are the components that consumes energy. It does not produce energy it means zero amount of energy stored in it. Capable of operating without an external power source and unable to control the flow of current. Passive components are energy acceptor and it not requires any external source for the operation.
Examples;
1: Resistors
2: Capacitors
3: Inductors
2: Active components:
An active components are the electronics components which supplies energy to a circuit it means the component produce power or delivers the energy in the form of current or voltages and it able to control the flow of current. Active component are energy donor and it requires an external source to for the operation.
Basically two types of active components
1: Tube devices:
a: Triode.
b: Tetrode.
c: Cathode Ray Tube.
2: Semiconductor Devices :
It is a electronic component made from a semiconductor material ( silicon , germanium, gallium) and it is very useful because their behavior can easily operate by measured addition of impurities it also known as doping. Semiconductors devices are manufactured both as single or more than two devices which consist of hundred to the billions and it manufactured on a single semiconductor wafer.
Semiconductor devices are given below:
2 : Zener diode.
3: Schottky diode.
4: Light-emitting diode (LED).
5: Bipolar junction transistor (BJT).
6: Field effect transistor (FET).
7: Thyristor.
Good features of electronic devices:
1: The device which controls the flow of electron for performing the particular task.
2: Semiconductor material are used like silicon and germanium.
3: Mostly uses direct current (DC).
4: It work on low voltages.
5: Power consumption is less.
6: It required very less space.
Application of electronics devices:
1: Entertainment and communication.
a: Telephony.
b: Telegraphy.
c: Radio.
d: Television.
e: Computer.
f: Mobile phone.
g: Digital camera.
2: Defence Application:
a: RADAR system are used to detect the location.
b: Automatic control system.
3: Industrial application:
a: To amplify the signal.
b: Automatic door openers.
c: Electronically controlled system are used for heating and welding in the industry.
4: Medical services:
a: X-rays.
b: ECG ( electrocardiography).
c: Shortwave diathermy units.
d: Oscillograph.
5: Instrumentation.
a: Cathode-ray oscilloscopes.
b: Frequency counters.
c: Signal generators.
d: Strain gauges.
3 Comments
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ReplyDeleteElectronics is the branch of physics and technology that deals with circuits, transistors, microchips, and the behavior and movement of electrons. It handles electric circuits containing active and passive elements and uses underlying techniques. It is an important part of engineering.Electricians Wales
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