Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
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.
A single-phase source delivers 100 kW to a load operating at 0.8 lagging power factor. In order to improve the system's efficiency, power factor improvement (correction) is achieve
A rifle with a mass of 3,5 kg fires a bullei with a mass of 120 g with a muzzle velocity of 420 mls. Calculate the following: 1.4.''l The momentum before the rifle was fired ''1.4.
1. Derive the necessary formula/method to determine the effective value or RMS of a triangular wave. Use either a similar method to the class example of the RMS determination
Discuss the requirement for automatic gain control in AM receiver and automatic frequency control in FM. How are these 'control' voltage formed and used?
how to upload the program on proteus software by using personal computer
Q. Find the current flow through a resistor ? Consider the circuit shown in Figure (a). Reduce the portion of the circuit to the left of terminals a-b to (a) a Thévenin equival
You are expected to do the experimentation on digital electronics and realize the result...
LHLD Load HL Pair Direct Instruction This instruction is used to copy the content of memory location specified by opened in register L and copy the content of next m
Q. Explain Common Emitter Circuit With The Help Of A Circuit Diagram? Most transistor circuits have the emitter,rather than the base,as the terminalcommon to both input and out
explain a basic measurement system
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd