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Two-Resistor Bias Network for BJT: Example

Find Q-point for

transistor in 2-resistor bias circuit with

given parameters. β

50,

=9V

Forward-active operation region,

9= 9 =

  • +

    18 , 000

    • +

      18 , 000

+1000 (

+

+1000 (51)

= 0.7 V )

=

9 V 0 . 7 V

69 ,000 Ω

= 120 μA

= 50

= 6.01 mA

= 9 1000 ( = 2.18 V

+

) = 2.88 V

37

19

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