PSPICE A/D simulation problem

- R
- RsK
  
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posted
17 years ago

Tue, Apr 10, 2007 8:41 PM

Hi anyone can see the pspice file and please tell me how to remove the error it displays while simulation?

regards, rizwan

.MODEL QBC337-25 NPN(

IS = 4.13E-14

NF = 0.9822

ISE = 3.534E-15

NE = 1.35

BF = 292.4

IKF = 0.9

VAF = 145.7

NR = 0.982

ISC = 1.957E-13

NC = 1.3

BR = 23.68

IKR = 0.1

VAR = 20

RB = 60

IRB = 0.0002

RBM = 8

RE = 0.1129

RC = 0.25

XTB = 0

EG = 1.11

XTI = 3

CJE = 3.799E-11

VJE = 0.6752

MJE = 0.3488

TF = 5.4E-10

XTF = 4

VTF = 4.448

ITF = 0.665

PTF = 90

CJC = 1.355E-11

VJC = 0.3523

MJC = 0.3831

XCJC = 0.455

TR = 3E-08

CJS = 0

VJS = 0.75

MJS = 0.333

FC = 0.643)

* *Resistors

R1 2 4 56k R2 2 0 22k RB 2 3 180 RC 4 5 5.1k RE 6 0 3.3k

Load RL 8 0 1k CL 5 8 10u

* *Capacitors

C1 1 2 330n CC 3 5 470p CE 6 0 220u VCC 4 0 15

.AC DEC 10 10 100k .PROBE .END

- J
- Jim Thompson
  
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posted
17 years ago

Tue, Apr 10, 2007 9:33 PM

Top posting to be as big an annoyance as possible ;-)

(1) You show a model of an NPN. But there is no NPN in the netlist.

(2) What does the error message say?

...Jim Thompson

--
|  James E.Thompson, P.E.                           |    mens     |
|  Analog Innovations, Inc.                         |     et      |
|  Analog/Mixed-Signal ASIC\'s and Discrete Systems  |    manus    |
|  Phoenix, Arizona            Voice:(480)460-2350  |             |
|  E-mail Address at Website     Fax:(480)460-2142  |  Brass Rat  |
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- H
- Helmut Sennewald
  
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posted
17 years ago

Tue, Apr 10, 2007 9:49 PM

"RsK" schrieb im Newsbeitrag news: snipped-for-privacy@a30g2000cwd.googlegroups.com...

Hello rizwan,

I don't know what PSPICE reports, but the error report from LTspice is crystal clear if you know SPICE.

WARNING: Node 1 is floating. WARNING: Less than two connections to node 1. This node is used by C1.

---> one pin of C1 is not connected

No AC stimulus found: Set the value of a current or voltage source to "AC 1." to make it behave as a signal generator for AC analysis.

---> An AC-analysis requires at least one voltage source with an "AC" definiton.

This doesn't matter, but why do you have a transistor model when you don't use a transistor?

Best regards, Helmut