Mega Top 1/os2_top1.zip/os2_top1/DOS_GG/COMCAT/VOL33.ARJ/VOL3355

Text File | 1992-01-07 | 9KB | 169 lines

 Volume 3355 - Released march 1988 -  Abstract (C) ProgrammaTheek

ProgrammaTheek volume 3355

gelijk aan EE Library #5

Titel:Turbo Pascal & Basic EE programs

Number Name            Size    Date    Comments
355.01 14X9     FON     3584  11-21-84 Font file for CHEBFIL
355.02 4X6      FON      285   2-25-85  ,,   ,,         ,,
355.03 8X8      FON     2048  11-20-84  ,,   ,,         ,,
355.04 BAIRSTOW COM    14231   3-03-87 Complex root finder
355.05 BAIRSTOW PAS     8058   1-17-86 Source for ^
       CATALOG  355     1907   8-30-87 This list
355.06 CHEBFIL  COM    18173   7-28-86 Calculates response of Cheb. filters
                                       incl. loss
355.07 CHEBFIL  PAS    10564   7-28-86 Source for ^
355.08 CIRANL   PAS    12842  12-11-84 Circuit analysis R, L, C
355.09 CIRCSEGM HGH     5288   3-20-86 Support file
355.10 DISH     BAS     4508   8-30-87 Parabolic antenna design
355.11 ERROR    MSG      569   4-04-85 Support file
355.12 FFT      COM    44312   3-03-87 Fast fourier and inverse transform
355.13 FFT      IN       194   2-20-86 Support file
355.14 FFT      PAS    11287   7-23-86 Source
355.15 FILTER   BAS     5760   4-03-86 Limited version of MFILTER
355.16 JEC              4096   2-23-87 Support file
355.17 KOLBLY   DOC     3876   8-29-86 Doc for many basic programs
355.18 LUDEC    COM    11740   3-03-87 LU decomposition for linear equations
355.19 LUDEC    PAS     3220   2-23-87 Source of ^
355.20 MFILTER  BAS     8448   4-03-86 Cascade of active lp, hp, bp filters
355.21 NET85    BAS    15254  10-27-86 Network analysis program
355.22 PLOTGR   CHN    28642   7-28-86 Support for CHEBFIL
355.23 RFDESIGN BAS    12800   4-03-86 Smith chart calculation program
355.24 ROMBERG  COM    11227   3-03-87 Integrates integrand placed in `fnc'
                                       block
355.25 ROMBERG  PAS     2683   6-17-86 Source of ^
355.26 SABIN    BAS    11776  10-30-86 Signal analysis program
355.27 SABINFIX BAS    17792  10-30-86 Extended version
355.28 SATELLIT BAS     5888   1-01-80 Calculate azimuth/elevation for sat.
                                       station
355.29 SPIRLIND COM    14748   3-03-87 Compute inductance of round spiral
                                       inductor
355.30 SPIRLIND PAS     4782   3-18-87 Source of ^
355.31 VERSION  DOC      118   3-18-87 Notes on versions
355.32 VOL3355  ABS     6656   8-30-87 Disk abstract
              33 File(s)     33792 bytes free on volume VOL3355


     This disk  contains a mixture of programs, some based
on published articles and some are new. Jeff Crawford, see disk
3354, has contributed seven more programs, all in Turbo Pascal.
Richard Kolbly has sent us a number of programs that are based on
published articles, plus some of his own work.

The com files on this disk,(except CHEBFIL)require a math coprocessor.
Pascal programs on this disk may be compiled with Borland's
Turbo Pascal compiler. CHEBFIL also requires Borland's Turbo Graphix Toolbox
to compile it. The .FON files, ERROR.MSG & PLOTGR.CHN must be resident for
CHEBFIL.COM to run. It requires a graphic terminal. A compiled version of
FFT.PAS has been added to this revision. The files
FDFT.IN and JEC have been added. The Ludec program has been revised.
       Tip for you non-pascal users, data must be seperated by one or
more spaces when entered into pascal programs. G.H.

     MXFILTER: This program allows one to estimate the maximum
possible passband width while satisfying specific out of band
requirements. At the present time it is set up for a maximum of 4
out-of-band frequencies. The limitation lies in how much
information may be displayed on the screen at one time. If this
were changed, no other modification would be necessary.

     BAIRSTOW: A complex root finder based on the Barstow method.
This method is adequate for general polynomials to possibly 15th.
degree, depending largely upon the location of the respective
roots. For polynomials exhibiting widely spaced roots, the
accuracy is limited for the higher order polynomials.

     ROMBERG: An integration program allowing the user to place
any integrand into the function "fnc" block and doing the
integration. This is far more than a general integration in that
it encompasses Richardson's Extrapolation which GREATLY increases
convergence time for a minimal number of steps taken. With
Richardson's convergence, only 16 steps may be necessary compared
to 128 or 256 without it, dependent upon the behavior of the
function naturally.

     SPIRLIND: A program which uses Neumann's form to calculate
the dc value of inductance of round spiral inductors. The
negative mutual inductance is also calculated due to the
proximity effects of the ground plane.

     CHEBFIL: A program which calculates the theoretical response
of Chebyshev filters when given real-world Q values. The poles of
the respective Chebyshev polynomial are calculated in each case
and the group delay calculated. This information is calculated at
each frequency of interest and used with the real-world Q to very
accurately determine the in-band insertion loss and roll off near
the ripple frequencies. If accurate values for the Q being used
are used with this program, the results agree in-band very
closely. Graphics is included and uses the graphics package from
Borland International.

     LUDEC: LU Decomposition for the solution of systems of
linear equations. This form is optimal in that the entire
calculation is performed "in place" and no additional memory is
required. Errors are less than with the typical Gaussian
reduction. Ex: order=3,  A(1,1)=2,A(1,2)=-1,A(1,3)=0,A(2,1)=-1,
A(2,2)=2,A(2,3)=-1,A(3,1)=0,A(3,2)=-1,A(3,3)=2, B(1)=6,B(2)=0
B(3)=-6. THEN X1=3,X2=0,X3=-3. WHERE A*X=B.

     FFT: Performs forward and inverse FFT's for any number of
increments which is a factor of 2, 16, 32, 128 etc. The  "fft.in"
file has a routine in it which fills the arrays used in the
computation. The fft.in file on the disk fills the array with a damped
sinusoid. The data created by this file is called "jec".

     CIRANL: Performs frequency analysis of any circuit entered
into the circuit definition file contained within. The routine is
based upon the floating admittance matrix. One starts out with an
n x n matrix and the routine "collapses" this matrix to a 2x2
with the input and output ports (which are variable) as the user
defines. All four admittance parameters are calculated and may
be used in any of the conventional two port representations for
further analysis. At present only subroutines for R, L, and C are
included but may be easily expanded to include active devices,
transformers, transmission lines, and other useful elements.

FILTER.BAS  was originally written to run on a CP/M system  under
Microsoft MBASIC version 5.2. This program is confined to the  multiple-feed-
back active filter. The  performance  of  the  filter is based  on  the
s-parameter response from standard servo  theory.

MFILTER.BAS  is  an  extension  of  FILTER.BAS.   it  allows  for
cascading of multiple-feedback filters and 'tuning' of the element
values.   In addition,  a routine has been incorporated to  allow
selection   of   standard  RETMA  values  for  circuit   elements
automatically.   The analysis portion allows multiple 'looks'  at
filter response and component changes.
Note  that this program assumes an "ideal" operational amplifier.  More
precise results could be used by using NET85.BAS. The  program  NET85.BAS  is
an analysis  program,  not  a  design program,  so  should  be  used after
component values  have  been
determined.

NET85.BAS is an adaptation of a network analysis program  written
up  in a trade magazine (EDN,  February 4,  1981 pp 126-133)  and
published  in  a BASIC-like Hewlett-Packard language for  one  of
their  early desktop computers.  The program has been  translated
into  BASIC  and many "bells and whistles" added for storing  and
loading circuits and results in files for use by other  programs.
The fundemental program has not been changed.

RFDESIGN.BAS  is an adaptation of a Smith Chart program published
in  RF Design magazine for June of 1985 and has been  adapted  to
run  on the IBM-PC or compatable.   This program does not use any
of the advanced BASIC features.

SABIN.BAS  is an adaptation of a signal analysis program by  W.E.
Sabin  published  in EDN for June,1983 (page 243).  It  has  been
adapted  to  run  under Microsoft GWBASIC.   SABINFIX.BAS  is  an
extension of SABIN.BAS to allow more direct user controls,  and a
list  of  the things done,  as well as allowing  dual  arrays  to
transform  and  manipulate.   Also,  file  operations  have  been
extended.

Disk.asc designs a parabolic dish and the sub-reflector for a
 Cassegrain feed.