construction of P-channel J-FET.

 construction of P-channel J-FET.
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Construction of P-channel J-FET :


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The construction diagram of P channel junction field effect transistor (JFET) is shown in above figure. It consist of a P type silicon bar with two N type heavily doped regions diffused on opposites sides of its middle part. The JFET in which the current conduction takes place only due to holes as majority charge carriers is known as P channel JFET. The two PN junctions are formed by the N region and the space between that is P region is called a channel. A single wire is taken in the form of the terminal when both the N type regions are connected internally. This is known as the gate (G). The electrical connection which is also known as ohmic contact are made to both ends of the P type semiconductor and are taken out in the form of two terminals called drain (D) and source (S). The Drain (D) is a terminal through which electrons enter the semiconductor bar and Source (S) is a terminal through which the electrons leave the semiconductor. 

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