Second quadrant or class b chopper, Electrical Engineering

Assignment Help:

Second Quadrant or Class B Chopper

Class B  chopper  is shown in figure in this  type of  chopper load  must contain  a dc source E ( may  be battery or a DC motor)  and inductances the  operation of classes B chopper as follows.

 Mode I

When SW  is on V0 = 0 but current will  be flowing  through  inductance L and  chopper SW  due to E as shown in figure in this mode inductance L stores energy.

Figure  shown the polarity of inductance  and direction of load  current.  It is clear  from this  figure that this  polarity's same as in directed but the  current is  flowing in reverse direction. Hence  is negative.

 Mode II

When SW  is off V0=  { E+ L  di0/dt}  exceeds the Vs  therefore  diode  D becomes forward  biased and current  flow   load to source  through diode D.  Again the load  voltage  is positive but current is in negative direction. In  this mode  inductance releases energy and the  polarity is shown in figure.

Hence  the Vo -I0  characteristics  is shown  in figure  that lie in second  quadrant.


Related Discussions:- Second quadrant or class b chopper

Define smoothing the output, Define Smoothing the Output? The output of...

Define Smoothing the Output? The output of a DAC is stepped, such as the analog waveforms which were sampled and held. This stepped, or staircase effect is a distortion, and it

What are the major systems of a telecommunication network, Q. What do you u...

Q. What do you understand by major systems of a telecommunication network? Explain in detail the subscriber loop systems. Ans: Major systems of any telecommunication netw

Draw the logic diagram of an sr latch, Q. Draw the logic diagram of an SR l...

Q. Draw the logic diagram of an SR latch using only NAND gates, and obtain the truth table for that implementation.

What do you eman by digital circuits, Q. What do you eman by Digital Circui...

Q. What do you eman by Digital Circuits? The use of nonlinear devices (BJT and FET) in constructing linear amplifiers. Although these devices are inherently nonlinear, their op

Find the speed of the motor, Q. A 10-kW, 230-V shunt generator, with an arm...

Q. A 10-kW, 230-V shunt generator, with an armature-circuit resistance of 0.1  and a field- circuit resistance of 230 , delivers full load at rated voltage and 1000 r/min. If the

Compare the merits and demerits of analog voltmeters, Question : (a)(1)...

Question : (a)(1) Show different types of voltmeters commonly used. (2) A basic d'Arsonval meter movement with an internal resistance Rm = 100 ?,and a full scale current of

Explain about delay system, Q. Explain about Delay System? Delay Syste...

Q. Explain about Delay System? Delay System: A class of telecommunication networks, like data networks, places the message or call arrivals in a queue in the

For zero flag - conditional jumps , For  Zero  Flag JZ ( Jump on Ze...

For  Zero  Flag JZ ( Jump on Zero) and JNZ ( jump on no zero ) Instruction JZ  transfer  the  execution of the program to the  speciffed address if zero  flag is set (Z=

Determine the resonant frequency and bandwidth, (a) For a series RLC resona...

(a) For a series RLC resonant circuit, find an expression for the voltage across the resistance VR and obtain the ratio V R /V S , where V S is the applied voltage. Identify the e

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