Switched mode power supply , Electrical Engineering

Assignment Help:

Switched Mode Power Supply  (SMPS)

Switching mode power  supply converts an unregulated DC voltage  to a regulated DC  output  voltage . SMPS  stands  for switched mode  power supply. A  switched  mode power supply is  a power supply that provides the use of switches that are in one of two states, ON of OFF. In  such a device  power handling  electronic  components  are continuously switching ON or OFF  with high frequency in order to provide the transfer of electric energy via energy storage  components. The  advantage of switched  mode  power supply  is that the switch dissipates very little power in either of these two  and power conversion can  be accomplished with minimum  power loss and high efficiency. Because of the critical nature of power supplies  in all  equipment this approach  improves both  performance and reliability of  the total system  at no  additional cost.

 A switch  mode  power  supply circuit is  versatile. It can be used  to produce  multiple  dc outputs  using a circuit  such as the fly back  converter to step down  an unregulated dc input voltage to produce a regulated c output  voltage  using a circuit known as buck converter or step down SMPS to step up an unregulated dc input voltage to produce a regulated  dc output voltage suing a  circuit known as boost converter or step up SMPS, to step up or step done an  invert the input dc voltage  and to  switch mode  power supply is a widely used circuit nowadays and it is used in  as system such as a computer television receiver battery charger etc. The  switching frequency is usually above 20KHz so that the  noise produced by it is above  the audio range. It is also used to provide a variable dc voltage to armature of a dc motor  in a variable speed drive. It is used in a high frequency unity power factor circuit.

This types  of regulator can  be classified  into PWM  switch  mode ( square mode ) and resonant  switch  mode  ( sine wave).

There are four  basic topologies of PWM switch  mode  regulators or converters .

a.Fly  back converter

b.Buck  converter

c.Boost  converter

d.Buck boost converter


Related Discussions:- Switched mode power supply

State the advanatages of GPS system, Advanatages of GPS system These s...

Advanatages of GPS system These systems have been developed to mimic the knowledge and expertise of an expert in a particular field. For instance: -  prospecting for minera

Find the diode current and voltage in given circuit, We shall demonstrate l...

We shall demonstrate load-line analysis to find the diode current and voltage, and then compute the total power output of the battery source in the circuit of Figure (a), given the

Three byte instruction , Three byte instruction The  instruction which...

Three byte instruction The  instruction which  have 16  bit data address  as its  operand  are three byte  instruction. They  need three  memory  locations to store  them in m

Determine the number of bits of a natural binary encoder, Determine the num...

Determine the number of bits of a natural binary encoder that works with the quantizer: a) If the extreme levels are ±3.1 V, with a step size of 0.2 V. (b) If there are 128 q

Bias circuit requirements, Bias circuit requirements: Signal requirem...

Bias circuit requirements: Signal requirements for Class A amplifiers The Q-point is placed thus the transistor stays in active mode (does not shift to operation in the s

Explain about differentiator, Q. Explain about Differentiator? Shown in...

Q. Explain about Differentiator? Shown in Figure is a differentiator which is obtained by replacing R1 in the inverting amplifier of Figure by a capacitor C. Assuming ideal op-

Determine the current needed in the coil to produce a flux, Q. Consider the...

Q. Consider the magnetic circuit shown in Figure. Assume the relative permeability of the magnetic material to be 1000 and the cross-sectional area to be the same throughout. Deter

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