DD Rp Vo VGS Rs Ra (c) Figure 7.50 BiasingT ueing

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V DD
Rp
RGI
VG
Vos
VGS
Rs
RG
(c)
Figure 7.50 Biasing using
Transcribed Image Text:V DD Rp RGI VG Vos VGS Rs RG (c) Figure 7.50 Biasing using
D *7.94 In an electronic instrument using the biasing scheme shown in Fig. 7.50(c), a manufacturing error reduces
Rs to zero. Let VDD = 15 V, RG1 = 10 M2, and RG2 =5.1 MQ. What is the value of VG created? If supplier
specifications allow k, to vary from 0.2 to 0.3 mA/V2 and V, to vary from 1.0 V to 1.5 V, what are the extreme
values of Ip that may result? What value of Rs should have been installed to limit the maximum value of Ip to 1.5
mA? Choose an appropriate standard 5% resistor value (refer to Appendix J). What extreme values of current now
result?
Vau- +15 V
10 ME
Re
Rp
5.1 MO
Rs
When you solve the drain current Io, using the quadratic equation, one of the solutions will not
[Hint]
make physical sense so do not chose that solution. The min. Ip happens at lowest k, and max. V.
Transcribed Image Text:D *7.94 In an electronic instrument using the biasing scheme shown in Fig. 7.50(c), a manufacturing error reduces Rs to zero. Let VDD = 15 V, RG1 = 10 M2, and RG2 =5.1 MQ. What is the value of VG created? If supplier specifications allow k, to vary from 0.2 to 0.3 mA/V2 and V, to vary from 1.0 V to 1.5 V, what are the extreme values of Ip that may result? What value of Rs should have been installed to limit the maximum value of Ip to 1.5 mA? Choose an appropriate standard 5% resistor value (refer to Appendix J). What extreme values of current now result? Vau- +15 V 10 ME Re Rp 5.1 MO Rs When you solve the drain current Io, using the quadratic equation, one of the solutions will not [Hint] make physical sense so do not chose that solution. The min. Ip happens at lowest k, and max. V.
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