What is switched mode power supply, Computer Engineering

Assignment Help:

Q. What is Switched Mode Power Supply?

SMPS is the unit into which electric supply from the mains is connected to your PC and this supplies DC to internal circuits. It is more efficient, more complex and less expensive than linear supplies.

SMPS performs in the following way:  The electric supply received is sent to a component known astriac which shifts it from 50 Hz to a much higher frequency (approximately 20.000 Hz). At the same time, employing a technique known as Pulse Width modulation, the pulse is varied to the requirements of the computer circuit. Shorter pulses provide lower output voltage. A transformer then decreases back the voltage to the correct levels and rectifiers and filters produce the pure DC current.

SMPS has two main benefits: They produces less heat since they waste less power and use less expensive transformers and circuits because they operate at higher frequencies. 

The power requirement of a PC relies on peripherals and motherboard in your computer.  Still in modern PCs, your requirement may not be more than 150-200 Watts.


Related Discussions:- What is switched mode power supply

Discuss in detail about micro computer, Discuss in detail about Micro compu...

Discuss in detail about Micro computer A microcomputer's CPU is a microprocessor. The microcomputer was originated in late 1970s. The first microcomputer was built around 8-bit

How a physical addressing is performed in wan, How physical addressing is p...

How physical addressing is performed in WAN? WAN networks operate as similar to a LAN. All WAN technology classifies the exact frame format a computer uses while sending and re

Instruction queue in bus interface unit, Q. Instruction Queue in Bus Interf...

Q. Instruction Queue in Bus Interface Unit? Instruction queue is employed to store the instruction ‘bytes' fetched. Please conceren two points here: that it's (1) A Byte (2) Qu

Explain the principles of design, In structure chart whole application is d...

In structure chart whole application is divided into modules (set of program instructions) and modules are designed according to some principles of design. These are: Modularit

Which scheduling is suitable for time-shared operatin system, Which schedul...

Which scheduling policy is most suitable for a time-shared operating system? Ans. Round-Robin scheduling policy is most appropriate for a time-shared operating system.

Level of any node of a tree, Level of any node of a tree is :- Its distanc...

Level of any node of a tree is :- Its distance from the root

Can link and association applied interchangeably, No, You cannot apply the ...

No, You cannot apply the link and Association interchangeably. Since link is used show the relationship among the two objects. But Association is used signify the relationship

What is the semiconductor memory chip, What is the Semiconductor memory chi...

What is the Semiconductor memory chip A semiconductor memory chip comprises a large number of cells organized into an array and the logic necessary to access any array in the c

Data structure, explain different type of sparse matrix

explain different type of sparse matrix

What are the types of data warehouses, What are the types of data warehouse...

What are the types of data warehouses? Various types of data warehouses are illustrated below: a) Financial Data Warehouses b) Insurance Data Warehouses c) Human Resou

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd