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

What are different adder circuits you studied, Half Adder (for addition of ...

Half Adder (for addition of two bits) Full Adder (for addition of three bits) Carry look ahead adder Carry save adder Carry propagate adder

What is write-through protocol, What is write-through protocol? For a w...

What is write-through protocol? For a write operation using write-through protocol during write-hit: The cache location and the major memory location are updated concurrently.

Micro programmed control and hardwired control, Explain micro programmed co...

Explain micro programmed control. Ans: A micro programmed control unit is made around storage till is called a control store where all the control signals are stored in a prog

Create a factory function and constructor, 1) This project will use an acco...

1) This project will use an account class that has the members: string account_code; string first_name; string last_name; double balance; Provide a constructor that

Electric circuit analysis, mmmmmmmmmmmmm mmmmmmm s s s s s s s s s d d d ...

mmmmmmmmmmmmm mmmmmmm s s s s s s s s s d d d d d d d d d d d d d d f f ff g gg g g g g gg r r r rr r w ww w w ww w w

Forward chaining - artificial intelligence, Forward Chaining - Artificial i...

Forward Chaining - Artificial intelligence: Imagine we have a set of axioms which we know are true statements regarding the world. If we set these to each be a starting state o

Ann representation - artificial intelligence, A NN Representation ANNs...

A NN Representation ANNs are skilled on AI lessons because of their inspiration from brain studies and the truth that they are applied in an AI jobs, namely machine learning.

What is the purpose of linq providers in linq, LINQ Providers are a set of ...

LINQ Providers are a set of classes that takes a LINQ query and dynamically produces a method that implements an equivalent query against an exact data source.

What is the main function of an assembly, What is the main function of an a...

What is the main function of an assembly It contains code that the common language runtime implements. Microsoft intermediate language (MSIL) code in a portable executable (PE

Positive logic nand gate is equivalent to negative logic nor, Show that a p...

Show that a positive logic NAND gate is equivalent to negative logic NOR gate. Ans:  Positive logic denotes True or 1 with a high voltage and False or 0 with a low volt

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