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q why is an emitter bypass capacitor used in an rc coupled amplifierif an emitter resistor re is used for self-bias in an amplifier and if it is
what is logic gatesthe logic gates are circuits made up of transistors diodes and resistors the logic gates process one or more input signals in a
explain fourth group of 32 ascii character code the fourth and final group of 32 ascii character codes are set aside for the lower case alphabetic
q discuss the disadvantages of an rc coupled amplifierrc coupled amplifiers have a few disadvantages the resistors use dc power and so the amplifier
explain the third group of 32 ascii character the third group of 32 ascii characters is set aside for the upper case alphabetic characters the ascii
define the second group of 32 ascii character codesthe second group of 32 ascii character codes include various punctuation symbols special
define some illustrations of common control charactersillustrations of common control characters includecarriage return ascii code 0dh which
explain the ascii character setmost programming languages have a means of defining a character as a numeric code and conversely converting the code
explain the alphanumeric coding - bcd to decimal conversionfor the inherently binary world of computer it is necessary to put all symbols letters
q explain the theory of thermal runaway the maximum average power pdmax which a transistor can dissipate depends
define gray code - bcd to decimal conversionthe gray code is a variation on binary code in which only 1 bit is changed from the preceding number the
explain the excess three codes - bcd to decimal conversionthe excess-3 representation of a number is based on binary coded decimal it is formed by
q give applications of emitter followerthe emitter follower has the following principal applications1 to provide current amplification with no
q what do you mean by feedback in amplificationfeedback feedback in its broadest sense means that a certain amount of the output signal is fed
q what is output impedanceoutput impedance the output impedance of an amplifier is a measure of the impedance or resistance it has nothing to do
q what do you know about input impedanceinput impedance amplifiers will be quoted as having a specific input impedance the sort of load it will
q what is meant by amplificationthe basic amplifying elements are namely valves vacuum tubes bipolar transistors and fets the term amplify basically
q transformer-coupled amplifierstransformer-coupled amplifiers the figure illustrates another type of coupling often used to couple audio frequencies
q explain working of resistance-capacitance coupled amplifiersresistance-capacitance rc-coupled amplifiers the following figure illustrates the
q what are the different types of coupling in amplifiersthe coupling between stages of amplifications may also be used to classify amplifiers there
q write a short note on the frequency response of a r-c coupled amplifierat low frequencies lt50hz the reactance of coupling capacitor cc is quite
q what are the applications of a r-c coupled amplifierthe r-c coupled amplifiers have excellent audio fidelity over a wide range of frequency
q what are the advantages and disadvantages of a r-c coupled amplifieradvantagesmiddot it has excellent frequency response the gain is constant over
q a transistor in a fixed bias amplifier circuit was replaced by another transistor of beta equaling 150 instead of 60if ib of transistor is equal to
q prove mathematically that the operating point does not depend on beta in a potential divider bias circuit to determine the operating point consider