Answered: he following amplifier (consider the…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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The following amplifier (consider the case with a R_L load) consists of a channel JFET n. In the amplifier, the value of the DC source ({+ V} DD = 20 V) and of all resistors (shown in the schematic) and capacitors ( C1= C2= 20 µF) is known. At the same time, the JFET has the following specifications: I_DSS= 10 mA and V_p= -3.5 V. The output resistance of the JFET is r_d = infinityΩ.
AC analysis:
The input signal V_S is a small sinusoidal signal, at the same time it oscillates at a medium frequency, in such a way that the response is not affected by the capacitances. Get the circuit in small signal and do all the necessary procedure / demonstration. To determine:
A) The transconductance g_m at the operating point.
B) The small signal equivalent circuit drawn conveniently.

+ 20 V
910 kn
2.2 kN
300 N Ci
Vout
RL
+1
V:.
in
110 kΩ)
510 N

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