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define the boolean algebraa set of rules invented by the english mathematician george boole describe certain propositions whose outcome would be
q which of the 3 transistor configuration is best to use in cascade if maximum voltage gain is to be realized the common collector configuration
q what are frequency response curves how are they madeevery amplifier has a frequency-response curve associated with it they provide a picture of the
q what are transistor amplifiers what is meant by efficiency of an amplifier what is amplifier couplingthe amplifier is a device that enables an
q mention the advantages and disadvantages of direct coupled coupling advantages
q a transistor is connected in common emitter configuration collector supply voltage vcc is 10 volts load resistance rl is 800ohmvoltage drop across
q why ce configuration is widely used in amplifier circuitsthe main ability of an transistor lies in amplifying weak signals the transistor cannot
q explain output ce characteristics1 in the active region ic increases slowly as vce increases the slope of the curved is greater than the cb output
q what are the current relations in common emitter configurationin a cb configuration ie is the input current and ic is the output current these
q mention some characteristics of transistorsmiddot when a npn transistor is working there is always a constant 06 volt drop between the base and
q why the gain of the amplifier decreases if the ce is avoidedwhen the ce is connected in the circuit ac signals get bypassed through it to the
q what is power gainpower gain is the ratio of power delivered to the load to power delivered to the amplifier is the power gainappopi
q what is the voltage gainvoltage gain is the ratio of output voltage to input voltage it is represented as avvo-voltageoutputvi-voltage
q what is current gain in rc coupled amplifiercurrent gain is the ratio of the output current to the input currentwe represent it as aiaiioisit
q what do you mean by direct couplingin this method the ac output signal is fed directly to the next stage no reactance is included in this coupling
q illustrate transformer couplingin this method the primary winding of the transformer acts as a collector load and the secondary winding transfers
q explain resistance-capacitance couplingit is the most commonly used coupling in discrete device amplifier as it is least expensive and has
q explain the different coupling schemes used in amplifierswhen amplifiers are cascaded it is necessary to use a coupling network between the output
q explain the classification of amplifiers on the biasing conditionsbased on the amount of transistor bias and amplitude of the input signal
q what are the various types of amplifiersamplifiers can be classified as followsa based on the transistor configuration1 common emitter amplifier2
q what is an amplifier what are the various types of amplifiersamplifier a circuit that increases the amplitude of the given input signal is an
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