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What can be the effect on the width of the conductor channel in a JFET, if the gate to source voltage is reverse biased?

What can be the effect on the width of the conductor channel in a JFET, if the gate to source voltage is reverse biased? Correct Answer lacks

  • A JFET ( Junction Field Effect Transistor) is a three terminal semiconductor device in which the current conduction is by either holes or electrons.
  • The current conduction is controlled by means of an electric field between the gate and the conducting channel of the device.
  • The width and hence resistance of this channel can be controlled by changing the input voltage (gate to source voltage)VGS.
  • The greater the gate to source voltage VGS, the wider will be the depletion channel and the narrow will be the conducting channel.
  • That is, the conducting channel offers high resistance and hence source to drain current decreases.
  • When VGS decreases the conducting channel increases offering low resistance.
  • From the above points, it is concluded that if the gate to source voltage is reverse biased the width of the conducting channel decreases. 

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