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From: bodoh@cat4.cs.wisc.edu (Daniel Bodoh)
Newsgroups: comp.sources.wanted,comp.sys.ibm.pc,comp.binaries.ibm.pc.d
Subject: Re: Circuit Waveform Analyzer needed for MOS networks (PSPICE?)
Message-ID: <1991Mar24.174531.5699@daffy.cs.wisc.edu>
Date: 24 Mar 91 17:45:31 GMT
References: <1991Mar23.213254.28831@ux1.cso.uiuc.edu>
Sender: news@daffy.cs.wisc.edu (The News)
Organization: U of Wisconsin CS Dept
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In article <1991Mar23.213254.28831@ux1.cso.uiuc.edu> gwang@ncsa.uiuc.edu (George Wang) writes:
>
>I do know that PSPICE can do outputs but they don't seems to allow
>multiple pulse input streams (with different clock freq and phases) and
>also doesn't seem to vary with time... Does anyone know how to setup
>SPICE to handle multiple-PULSE input streams and work with the time
>domain?

Use a pulse independent source for each input stream...  The form is
 
 Vxxxxxx N+ N- PULSE(V1 V2 TD TR TF PW PER)
where Vxxxx is the name of the voltage source
      N+ and N- are + and - terminals respectively
      V1 is the initial value
      V2 is the pulsed value
      TD is the time from 0 until the pulse starts rising
      TR is the rise time
      TF is the fall time
      PW is the time the pulse is at V2
      PER is TR+PW+TF+time between pulses (period)

 The do a TRAN analysis...

 For more info, get the book _Computer-aided_Circuit_Analysis_Using_SPICE_
 by Walter Banzhaf, published by Prentice Hall.  Although it is a poorly
 written book IMHO, it does serve as a good reference if you already know
 spice.  There are also many other Spice books out there, any university
 engineering library should have a host of them.

 Dan Bodoh