![]() One is by the frequency of the electronic signal being amplified. Amplifiers can be categorized in different ways. Amplification is fundamental to modern electronics, and amplifiers are widely used in almost all electronic equipment. Īn amplifier can either be a separate piece of equipment or an electrical circuit contained within another device. An amplifier is defined as a circuit that has a power gain greater than one. The amount of amplification provided by an amplifier is measured by its gain: the ratio of output voltage, current, or power to input. It is a two-port electronic circuit that uses electric power from a power supply to increase the amplitude (magnitude of the voltage or current) of a signal applied to its input terminals, producing a proportionally greater amplitude signal at its output. The graph shows the input v i ( t ) Īn amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the magnitude of a signal (a time-varying voltage or current). /hbase/solids/trans.Amplification means increasing the amplitude (voltage or current) of a time-varying signal by a given factor, as shown here./teaching/osu/ece327/lab1_bjt/lab1_bjt_transistor_basics.pdf.en./wiki/Transistor#Transistor_as_an_amplifier.The NPN transistor has got current amplification in the tune of 8.5 in the region of 0.4 to 2 ma. With the experiments carried out in the laboratory to study the characteristics of the NPN transistor proved the aim defined in the report. A minimum of 0.6V needs to be provided as activation voltage to input part of circuit, i.e., base-emitter (BE) section. As seen from the graph, the active region with maximum current amplification is from 0.41A to 2.0A.ģ. Least count of Milliammeter (out)= 10 mAĦ. Least count of Milliammeter (inp)= 2 mAģ. Zero Error of Voltmeter (Vo)= 0 V AMMETERġ. Plot the readings of the current taken in the graph of Current (inp) vs Current (out). ![]() Ensure that the input voltage does not exceed 1 V (input and output voltage will change correspondingly). ![]()
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