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Physical electronics devices and ics miscellaneous

Physical Electronics Devices and ICs

  1. For the series connected JFETs, IDSS = 8 mA and VPO = – 4V. If VDD = 15V, RD = 5 kΩ, RS = 2 kΩ and RG = 1 MΩ, find VDSQ.


    1. – 1·22 V
    2. – 2·44 V
    3. 0 V
    4. + 2·44 V
Correct Option: C

The given figure

From above circuit arrangement, we observed that VGSQ2 = VGSQ1 – VDSQ1
But IDQ1 = IDQ2
Since VGSQ1 = VGSQ2
therefore VDSQ1 = 0V Hence alternative (C) is the correct choice.



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