How linear sweep voltage is generated, Electrical Engineering

Assignment Help:

Q. With a suitable block circuit, show how linear sweep voltage is generated ?

2392_How linear sweep voltage is generated.png


The above figure shows a basic sweep waveform generator. The switching action of the switch causes the capacitor C to be alternately charged and discharged. The waveform generated by this basic circuit is not exactly linear, even if the ratio of the sweep voltage Vs and the supply voltage V is kept high. However, the linearity can be improved if feedback arrangement is made with this basic circuit.

Feedback can be improved if an auxiliary variable voltage generator va is introduced in such a way that variable voltage va is always equal to voltage developed across capacitor C.

1519_How linear sweep voltage is generated1.png

 Applying Kirchoff's voltage law to the circuit shown,

V - iR - vc + va = 0

iR = V    ,  if vc = va

i = V/R

i.e. the charging current i is independent of charging capacitor C and is constant.

Voltage across capacitor , vc = [V/CR] t

Hence, by introducing an auxiliary variable voltage generator in the basic R-C series circuit in the above manner, perfect linearity can be achieved in the output waveform of the circuit.


Related Discussions:- How linear sweep voltage is generated

Determine the total active power, Determine the total active power: Ci...

Determine the total active power: Circuit is introduced in the Face 1. It is about a single-wires face for a three-phase system. The voltage of the AC source is of 69kV. The s

Use of speaker, Q. Use of Speaker? Speaker:Basically speaker is the rec...

Q. Use of Speaker? Speaker:Basically speaker is the receiver for telephone. Speaker converts electrical signals received from local loop to acoustical signals(sound waves) that

Explain common emitter configuration, Q. Explain Common emitter configurati...

Q. Explain Common emitter configuration? Common emitter configuration: In this circuit the emitter is common to both input and the output.Such a configuration is also known as

Show the storage layout of digital system, Q. Show the Storage Layout of di...

Q. Show the Storage Layout of digital system? The IEEE floating point numbers have three basic components: the sign, the exponent, and the mantissa. A mantissa is composed of t

process of damping, Describe the process of DAMPING. You explanation shoul...

Describe the process of DAMPING. You explanation should include an example of each of the following:- Over-damping, Under-damping, Zero-damping, Critically da

What is autotransformers, Q. What is Autotransformers? In contrast to a...

Q. What is Autotransformers? In contrast to a two-winding transformer, the autotransformer is a single-winding transformer having a tap brought out at an intermediate point. Th

Current-carrying conductors, Q. Current-carrying conductors? Current-ca...

Q. Current-carrying conductors? Current-carrying conductors, when placed in magnetic fields, experience mechanical force. Considering only the effect of the magnetic field, the

What is the pipelining, A method used in advanced microprocessors where the...

A method used in advanced microprocessors where the microprocessor begins implementing a second instruction before the first has been done. That is, various instructions are in the

Limitations, Limitations: 1. Silicon transistors do not function at vo...

Limitations: 1. Silicon transistors do not function at voltages much higher than about 1,000 volts (SiC devices can be worked as high as 3,000 volts). In difference, electron

Space communication - application of software defined radio, Space communic...

Space communication - Application of Software Defined Radio Software defined radio can save cost of missions while constructing multiple mode, multiple band radio systems that

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