PSPICE A/D simulation problem

Apr 10, 2007 2 Replies

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

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 | | http://www.analog-innovations.com | 1962 | America: Land of the Free, Because of the Brave

"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

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