Answer to Question #85269 in Electric Circuits for Anand
called a voltage controlled device.
The JFETs have no PN-junctions like bipolar transistors, they have two P-type (N-type) layers connected to the gate and separated by N-type (P-type) channel between them. The channel at its ends has two terminals called source and drain.
The JFET is a voltage controlled device because the PN junction is reverse biased during normal operation (gate to source), and by changing the gate-source voltage we can control its resistance by controlling the drain to source current which depends on width of the channel.
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