Write notes on clamping, Electrical Engineering

Assignment Help:

Q. Write notes on clamping ?

Clamping network shifts (clamps) a signal to a different d.c level, that is it introduces a d.c. level to an a.c signal. Hence, the clamping network is also known as d.c reference signal to the video signal. The clamping network has the various circuit components like a diode, a capacitor and a resistor. The time constant for the circuit G=RC must be large so that the voltage across the capacitor does not discharge significantly when the diode is not conducting.

In the clamper circuit the diodes are assumed to be ideal. A square waveform with maximum amplitude of V is given as the input to the network. During the positive half cycle, the diode conducts, ie it acts like a short circuit. The capacitor charges to V volts. During this interval, the output which is taken across the short circuit will be V0= 0 V. During the negative half cycle, the diode is open. The output voltage can be found out by applying Kirchoff's Law.

-V-V-V0 = 0

Therefore, V0= -2V

The analysis of the clamper circuit can be done as follows. Determine the portion of the input signal that forward biases the diode. When the diode is in short circuit condition, the capacitor charges up to a level determined by the voltage across the capacitor in its equivalent open circuit state. During the open circuit condition of the diode, it is assumed that the capacitor will hold on to all its charge and therefore voltage. In the clamper networks, the total swing of the output is equal to the total swing of the input signal.


Related Discussions:- Write notes on clamping

Magnetic circuits, Magnetic circuits To  see  how  this   is  used   i...

Magnetic circuits To  see  how  this   is  used   in  practice, consider a coil of N turns wound onto a closed ring shaped former with a very high (note:    r (steel) = 200

Amper circuital lw, the plot of amper circuital law by using matlap?

the plot of amper circuital law by using matlap?

Crm triangle, CRM Triangle The following diagram which is called as CR...

CRM Triangle The following diagram which is called as CRM Triangle. Strategy refers to the whole stand taken through the company. It could selected a defensive posture in t

Gis technology, GIS technology: GIS could be used to derive diverse in...

GIS technology: GIS could be used to derive diverse information for efficient technical and commercial management of a power distribution utility, e.g., capacity analysis, inv

Thunderstrom detector, Ask question #how to construct thunderstrom detector...

Ask question #how to construct thunderstrom detector with circuit breaker.

What is discrete signals, Q. What is Discrete signals? Discrete signals...

Q. What is Discrete signals? Discrete signals, on the other hand, exist only at specific instances of time, and as such, their functional description is valid only for discrete

Depletion type mosfet, Depletion type MOSFET The channel is of silico...

Depletion type MOSFET The channel is of silicon. It can be two type of channel that is an n-type or p-type channel; it is still mostly silicon. After that, we take note that

Wiring a plug , Wiring a Plug : Let us consider the problem of connect...

Wiring a Plug : Let us consider the problem of connecting a 16 A plug, commonly known as 15 A or power plug to an electrical appliance. Do you use any old bit of wire, or any

Explain working of three-phase transformers, Q. Explain working of three-ph...

Q. Explain working of three-phase transformers? Transformation in three-phase systems can be accomplished in either of two ways: (1) connecting three identical single-phase tra

Determine the h-parameters for the circuit, Q. Determine the h-parameters f...

Q. Determine the h-parameters for the circuit shown in Figure and obtain the transfer function V 2 /V 1 when I 2 = 0.

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