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Amplifiers in Electronic Circuits and Devices

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Added on  2021-06-17

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Electronic Circuits and Devices 1 ELECTRONIC CIRCUITS AND DEVICES By Name Course Instructor Institution Location Date Types of Amplifiers and their Performances An amplifier is a device that is used in increasing the amplitude of a signal without making alterations to the other parameters of the waveforms including the wave shape or the frequency. Amplifiers are very commonly used in circuits in various electronics and are used to carry out various functions in numerous electronic systems (Linsley 2015, p. Intermediate Frequency Amplifiers These are

Amplifiers in Electronic Circuits and Devices

   Added on 2021-06-17

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Electronic Circuits and Devices 1ELECTRONIC CIRCUITS AND DEVICESBy NameCourseInstructorInstitutionLocationDate
Amplifiers in Electronic Circuits and Devices_1
Electronic Circuits and Devices 2Types of Amplifiers and their PerformancesAn amplifier is a device that is used in increasing the amplitude of a signal without making alterations to the other parameters of the waveforms including the wave shape or the frequency. Amplifiers are very commonly used in circuits in various electronics and are used to carry out various functions in numerous electronic systems[CITATION Tre15 \p 189 \l 1033 ]. In an amplifier signal, the details of the type of amplifier are not provided and instead only the direction of flow of the signals is illustrated and is normally assumed to be in the left to direct direction. Audio Frequency AmplifiersThese are amplifier mainly used in the amplification of signals in the hearing range of humans that is about 20Hz to 20 kHz. This range is extended even further by some Hi-Fi audio amplifiersthat go as high as 100 kHz. On the other hand, there are other types of audio amplifiers that are capable of restricting the limit if the high frequency to 15 kHz or even lower.
Amplifiers in Electronic Circuits and Devices_2
Electronic Circuits and Devices 3The amplification of low levels of signals from disk pickups and microphones is done with the aid of intermediate frequency amplifiers. Amplifiers are also able to perform functions such as mixing of various inputs, correction of tones as well as equalization of signal levels by extra circuitry. Amplifiers have a medium to high output of resistance and high voltage gain. Such amplifiers are used in receiving the amplified input for a range of voltage amplifiers and thereafter provide enough power to operate loudspeakers.Intermediate Frequency AmplifiersThese are tuned amplifiers that are applied in radio devices, radar devices as well as in television sets and they are mainly used in providing the majority of the amplification of voltage of a television or radar signals immediately just before the separation or demodulation of the audio orvideo information carried by signals from the radio signal. These amplifiers work at frequencies that are lower than the frequencies of the radio wave that are received but are higher than the video or audio signals that are finally produced by the system[CITATION Cat111 \p 188 \l 1033 ]. The equipment type determines the bandwidth of these amplifiers. The operation frequency of AM receivers and I.F amplifiers is about 470 kHz with a bandwidth of 10 kHz.
Amplifiers in Electronic Circuits and Devices_3
Electronic Circuits and Devices 4RF amplifiersThese are tuned amplifiers that have the operation frequency being controlled by tuned circuit equipment. The circuit equipment may or may not be adjustable and this depends on the role of the amplifier[CITATION Ear11 \p 312 \l 1033 ]. The bandwidth is as well a factor of the purpose of the device and could be relatively narrow or wide. RF amplifiers have relatively low amplifier input resistance. Some of these amplifiers have little or absolutely no gain at all and instead act as primary buffer between an antenna used for receiving signals and thereafter circuit and thus preventing any unwanted signals of high levels to the antenna port to the receiver circuits. Such high level unwanted signals may be re-transmitted as interface. RF amplifierRF amplifiers are mostly applied in the earliest stages of a receiver and have low levels of noise performance. The noise mainly comes from the background sources which result from the operations of any electronic device which is to be kept a minimum by the amplifier as it will be
Amplifiers in Electronic Circuits and Devices_4

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