Difference between Analogue, Digital, and Power Electronics


Hey, in this article we are going to discuss the difference between Analogue, Digital, and Power Electronics. Although those all are related to electronics engineering there is a big difference between them.

Before going to understand the difference, let's look at a glance at the difference between electrical and electronics,
Electrical engineering deals with electrical power generation, transmission, and conversion with high voltage and high current whereas Electronics engineering mainly deals with electrical power control, rectification, amplification with low voltage and low current.

Difference between Analogue, Digital, and Power Electronics


Analog Electronics

Digital Electronics

Power Electronics

Part of Electronics Engineering

Part of Electronics Engineering

Part of Electrical Engineering

Work with continuous variable (analog) signal

Work with two-state (digital) signal

Work with all sinusoidal (AC), constant(DC), analog, and digital signals

Works with low voltage and low current

Works with extremely low voltage and low current

Works with high voltage and high current

Mainly deals with the amplification, wireless transmission, and rectification of electronic signals

Mainly deals with switching, analyzing, multiplexing, mixing, and processing of electronic signals.

Mainly deals with the control, conversion, inversion, and rectification of small to large electrical power.

It uses mostly passive components but sometimes active component-Transistor

It uses active components only

It uses both active and passive components.

High noise and distortion

Very low noise and distortion

Low noise and distortion

Low power loss

No power Loss

Comparatively high power loss

It helps to capture data from a system

It helps to analyze data of a system

It helps to operate the system

Very low electrical safety hazard

No electrical safety hazard

High electrical safety hazard

Example: FM Radios, Televisions, Telephones

Example: Computers, Smart Phones, Digital clocks

Example: UPS, Battery Charger, SMPS, VFD


Read the Full Article to Better Understand

What is Electronics?


When we work with only the flow of current or flow of electrons it can be called electrical, but when it comes to more precise controls over the flow of electrons and the flow of electric charge then it called electronics. Electrical engineering deals with passive components only(Resistor, Inductor, Capacitor) whereas electronics engineering deals with both passive and active components(Transistors, Diodes).


What is Analogue Electronics?


The branch of electronics engineering, where we work with a continuous variable signal or analog signal is called Analogue Electronics.

Analog electronics mainly deals with the amplification, wireless transmission, and rectification of electronic signals. The concept of Radio Frequency, Microwave, etc only comes with analog electronics engineering. Analog electronics use passive components only, in some cases it uses the active component Transistor only.

Analog electronics also deals with the ground level devices of an automation system such as different types of Transducers, sensors because those transducers and sensors can produce an only analog signal.

Example: FM Radios, Televisions, Telephones are the example of analogue electronics.


Advantages of Analogue Electronics


1. It deals directly with the physical quantities, devices, and objects where Digital Electronics can not be applied.

2. The rectification, amplification, and wireless transmission of electronic signals only possible with Analogue electronics.

3. Analogue electronics help to collect more data from a system, device, environments, etc.

4. Analogue electronics deals with the controlling of supply current, voltage, power of any electronic circuits (it may be analogue or digital circuit). Voltage regulation, voltage step up, step down for an electronic circuit comes under analogue electronics. Those features not possible with digital circuits. Actually, I mean to say digital electronics always need help from analogue electronics.


Limitations of Analogue Electronics


1. Although analogue electronics help a lot to collect data, but analyzing, mixing, multiplexing of data is not give a good result.

2. Analogue signals consisting of noise, distortion. Analog signals got affected by electromagnetic waves during transmission.

3. Analogue circuits are bigger in size, and it uses also bigger devices compare to digital circuits.

4. Analogue devices produce more electrical power loss and they slower than digital devices. Also, they consume more power than digital devices.


Applications of Analogue Electronics


Audio amplifier circuits, FM Radio, Televisions, Telephones, RADAR communications are the applications of Analogue Electronics.


What is Digital Electronics?


In the field of electronics engineering, where we work with a two-level signal or digital signal is called Digital Electronics.

Digital electronics deals with switching, analyzing, multiplexing, demultiplexing, mixing, and processing of electronic signals. The fundamentals of digital electronics based on the Binary Number System. Digital electronic circuit mainly made with active components it does not uses passive components.

Example: Computers, Smart Phones, Digital clocks, etc.


Advantages of Digital Electronics


1. Digital electronics help a lot to analyze, processing electronic signals.

2. Digital electronics help to control a lot of devices together from a small single device.

3. Digital circuits are much faster than analog circuits, in digital technology we can process a lot of electronic data, information within a second.

4. Digital circuits consume very low power than analog circuits, there is almost no power loss occurs. Digital devices also compact, smaller in size.


Limitations of Digital Electronics


1. Digital electronics nor comes in use when we need to do direct communication with physical devices, or collecting data from physical devices or any system.

2. Processing of signals is easy, but amplification, the rectification of electronic signals is not possible with digital electronics.

3. Signal transmission in the digital system through wires, optical fiber gives very good results but wireless transmission not possible in digital electronics.


Applications of Digital Electronics


Computers, Smartphones, LED TVs, digital watches are the applications of digital electronics.


What is Power Electronics?


In the field of electrical engineering, where we use electronic components, devices to control, switch, and rectify the electrical power is called Power Electronics.

Remember that, Power Electronics is a part of electrical engineering, not electronics engineering. Power electronics deals with the control, conversion, inversion, and rectification of small to large electrical power. Power electronics uses solid-state semiconductor devices such as SCR, IGBTs, Power MOSFETs, etc.

Power Electronics helps to digitally control the large electrical power. It helps to interface a large power system with digital circuits or computers from where we can easily monitor, analyze, and control the power system. 


Applications of Power Electronics


There are huge applications of power electronics in every consumer electronic devices, industrial panels, power factor panels.

AC to DC converter or rectifier circuits, DC to AC converter or inverter circuits, DC to DC converter or Chopper Circuits, UPS, Battery Charger, SMPS, VFD(Variable Frequency Drive) all are the great applications of power electronics.

Power electronics not only helps to control the electrical power it also helps to give smart protection and safety system to an electrical system. A snubber circuit is an example of a protection system for surge voltage.

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Difference between Analogue, Digital, and Power Electronics


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Difference between Analogue, Digital, and Power Electronics Difference between Analogue, Digital, and Power Electronics Reviewed by ETechnoG on 11/02/2020 Rating: 5
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