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Physical electronics devices and ics miscellaneous

Physical Electronics Devices and ICs

  1. A Darlington stage is shown in figure. If the transconductance of Q1 is gm 1 and Q2 is gm 2, then the overall transconductance, gm =
    Ic
    is given by—
    Vbe


    1. gm1
    2. 0·5 gm1
    3. gm2
    4. 0·5 gm2
Correct Option: D

The given figure (i.e., fig)

gm =
Ic
= gm2
Vbe

Hence alternative (C) is the correct choice.



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