When setting the Q-point of a JFET amplifier why is the bias circuit shown in Figure 3.1 (b) used rather than that shown in Figure 3.1 (a). + VDD + + RG1 VGS (a) tilt Vps Figure 3.1 RG2 VG (b) RD ¶ R$ Vs

When setting the Q-point of a JFET amplifier why is the bias circuit shown in Figure 3.1 (b) used rather than that shown in Figure 3.1 (a). + VDD + + RG1 VGS (a) tilt Vps Figure 3.1 RG2 VG (b) RD ¶ R$ Vs

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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Concept explainers

BJT (Bipolar Junction Transistor)

A BJT is a semiconductor device with 3 terminals that consist of a p-n junction diode that can amplify the signal or current. It is a current-controlled device. The three BJT terminals are base, collector, and emitter. The BJT works with the charge carrier, the two type of carriers in the BJT are holes and electrons, the charge carriers flow by the process of recombination. The signal to be amplifier is generally given as the input at the base terminal and an amplified form of it is available at the collector terminal.

Question

When setting the Q-point of a JFET amplifier why is the bias circuit shown
in Figure 3.1 (b) used rather than that shown in Figure 3.1 (a).
+ VDD
+
+
RG1
VGS
#
(a)
VDS
Figure 3.1
RG2
VG
(b)
RD
R₁
¡VD
Vs

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