FET Transistor

JFET as an Amplifier

JFET as an Amplifier: One of the applications of JFET as an Amplifier of input signal. In FET the weak signal is applied between gate and source and an amplified output is taken across the drain-source circuit having load, as shown in Fig. 13.12, just as in a vacuum tube where signal is connected between […]

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JFET Temperature Effects

JFET Temperature Effects: The JFET, like other solid state devices, is subject to the JFET Temperature Effects. However, it is possible to bias the JFET such that it will exhibit a zero temperature coefficient i.e. drain current ID will be independent of temperature. This is explained below : There are two primary mechanisms underlying the

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FET Configurations

FET Configurations: FETs (JFETs and MOSFETs) have three configurations just as BJTs have. The three FET Configurations—the common gate, common source, and common drain configuration have been given in Fig. 13.11. Input and output terminals of different configurations have been given in Table 13.1 TABLE 13.1    FET Configurations Configuration Input Terminal Output Terminal Common

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Advantages and Disadvantages of JFET

Advantages and Disadvantages of JFET: Junction field-effect transistors combine several merits of both conventional (or bipolar) transistors and vacuum tubes. Some of these advantages and disadvantages of JFET are enumerated below : 1. Its operation depends upon the flow of majority carriers only. It is, therefore, a unipolar (one type of carrier) device. On the

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Junction Field Effect Transistor (JFET) – Construction, Symbols and Operation

Junction Field Effect Transistor (JFET) – Construction, Symbols and Operation: Depending upon the majority charge carriers, Junction Field Effect Transistor (JFET) have been classified into two types, namely (i) N-channel JFETs with electrons as the majority charge carriers and (ii) P-channel JFETs with holes as the majority charge carriers. N-channel JFETs are preferred because of

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