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Pspice Simulations of JFET Small Signal Amplifier


02/11/97 - 15:26:05 - Evaluation PSpice
EET 212, LAB 3, JFET Small-Signal Amplifier

CIRCUIT DESCRIPTION
R1 4 3 190K
R2 3 0 10K
RG 3 2 90.5K
J1 5 2 6 JFET
RD 4 5 6.07K
RS 6 0 1.2K
RL 7 0 10MEG
CI 1 2 4.7UF
CO 5 7 4.7UF
CS 6 0 100UF
VIN 1 0 0.3VAC
VDD 4 0 20V
VDS 5 6 DC 9.1V
.MODEL JFET NJF (VTO= 2.5V DETA=510.4E 6 LAMBDA=6.3492E 3)
.PROBE
.OP
.OPTIONS NOPAGE
.END

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Junction FET MODEL PARAMETERS
JFET
NJF
VTO -2.5
BETA 510.400000E-06
LAMBDA 6.349200E-03

SMALL SIGNAL BIAS SOLUTION TEMPERATURE = 27.000 DEG C
NODE (1)
VOLTAGE .3000

NODE (2)
VOLTAGE 1.0000

NODE (3)
VOLTAGE 1.0000

NODE (4)
VOLTAGE 20.0000

NODE (5)
VOLTAGE 10.8990

NODE (6)
VOLTAGE 1.7992

NODE (7)
VOLTAGE 0.0000

VOLTAGE SOURCE CURRENTS
NAME, CURRENT

VIN 0.000E+00
VDD -1.599E-03
VDS -6.249E-05

TOTAL POWER DISSIPATION 3.26E 02 WATTS
OPERATING POINT INFORMATION TEMPERATURE = 27.000 DEG C

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JFETS
NAME J1
MODEL JFET
ID 1.56E-03
VGS -7.99E-01
VDS 9.10E+00
GM 1.84E-03
GDS 9.37E-06
CGS 0.00E+00
CGD 0.00E+00

JOB CONCLUDED
TOTAL JOB TIME 1.98


Graphics and Figures
Figure 1: Transfer Characteristics of 2N5458 JFET 1
Figure 2: Gain vs. Frequency for Small Signal Model
Figure 3: Gain (Av) of JFET 1, dB vs. Frequency
Figure 4: Verfied Q Point Current
Figure 5: Current through Source Resistor
Figure 6: Current IRS vs. ICS Characteristics
PSpice and Lab Notes
Lab Notes Page 1
Lab Notes Page 2
Lab Notes Page 3
Pspice Input Parameters

Electrical Engineering lab key words: PSPICE Parameters, Small Signal Amplifier, Pspice Simulation, JFET Amplifier, JFET Blasing Computer Code, Node voltage, currents, computational analysis, circiut parameters, field effect amplifier.

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