Question

在用PSpice仿真时，会出现Missing model的问题，请教达人给予解答

下面是仿真的原理图与“直流传输特性分析”.OUT文件出现的问题

** Creating circuit file "BIAS1.cir"
** WARNING: THIS AUTOMATICALLY GENERATED FILE MAY BE OVERWRITTEN BY SUBSEQUENT SIMULATIONS

*Libraries:
* Profile Libraries :
* Local Libraries :
.LIB "C:/Cadence/SPB_16.3/tools/pspice/library/spice_elem.lib"
* From [PSPICE NETLIST] section of C:\Cadence\SPB_16.3\tools\PSpice\PSpice.ini file:
.lib "nom.lib"

*Analysis directives:
.TF V([VO1]) V_Vs
.PROBE V(alias(*)) I(alias(*)) W(alias(*)) D(alias(*)) NOISE(alias(*))
.INC "..\SCHEMATIC1.net"

**** INCLUDING SCHEMATIC1.net ****
* source IMPORTANTEXAMPLE
R_Rc1 N00367 VO1 10k
R_Rc2 N00367 VO2 10k
R_Rb1 N01675 N04432 1k
R_Rb2 N04436 0 1k
R_Re N00451 N01963 10k
V_Vs N01675 0
+SIN 0 0.3V 0Hz 0 0 0
V_VCC N00367 0 10V
V_VEE 0 N00451 10V
Q_Q1 VO1 N04432 N01963
------------------------------$
ERROR -- Missing model
Q_Q2 VO2 N04436 N01963
------------------------------$
ERROR -- Missing model

**** RESUMING BIAS1.cir ****
.END

Answer 1

Bipolar transistor model names cannot begin with a number

PROBLEM:
If a bipolar transistor model begins with a number, why is the result: "ERROR - Missing model"?

SOLUTION:
The names of bipolar transistors (on the .model statement) can not begin with a number. The first letter must be one of the following characters: [A-Z] [a-z] '_' '/'. A number can be used after the first character. This is a limitation that originates from SPICE2.

Document number: PSP02410
Applies to: PSpice ver. All; Capture
Created on: 27-MAY-1999
Last modified: 28-MAY-1999

Copyright © 2005, Cadence Design Systems, Inc.
All rights reserved.

Answer 2

Missing model我猜应该是没有建立仿真模型，只有Pspice库模型里的元件才可以仿真。