Circuit Analysis and Waveform Analysis Software
Free DOS Versions can be used under Windows

CIRCUIT ANALYSIS SOFTWARE

This self contained package allows entry of any circuit with built in text editor or can read files created by any other text editor. Circuits are entered by "nodes" which are the points where the different components connect. The first task is thus to annotate your circuit diagram with a different node number (must be consecutive starting from 1, with earth 0 or last node) for every connection between two or more components. Help pages within the program give details of how the entry must be formatted and the same help information is available in PDF form for download. There are also example files to help you learn the techniques.

This software has been virus checked using Norton AntiVirus with up to date virus definitions and compiled on a PC which has never been infected so we have done all we can to make sure it is safe to use but we always recommend the use of virus checking software on any PC for your own protection whenever using downloaded software. We also recommend that you keep backups of valuable data.

We suggest you place all executable, help , circuit, waveform, filter, window files in the same directory initially

To Download the Full Program CCTNET.EXE Click Here (113KB)

Help Files are included but also available in PDF CCTHELP.PDF

The following example circuits are in the ZIP file CCTXMPLS.ZIP

Simple RC Low Pass Filter
Opamp with Gain of 1
Opamp 4 Pole Low Pass Filter
75 Ohm Terminated Transmission Line 		RC.CKT
OPAMP.CKT
4POLELPF.CKT
TRANS0.CKT

WAVEFORM ANALYSIS SOFTWARE

This self contained package allows entry of any circuit with built in text editor AND any waveform which can be specified using mathematical formulae or can read files created by any other text editor. Circuits are entered as above by "nodes" and this program uses the same circuit entry so will read the same files. The difference is that this program only offers linear frequency scaling but adds many other facilties. For example you can enter a waveform description and convert this to frequency and phase using Fast Fourier Analysis (FFT). This can be used purely as an analytical tool in itself or the resulting frequency and phase description of the waneform can be modified by the circuit to show how the circuit would affect the chosen waveform. This will be shown initially as frequency and phase again but can then be converted back into a true waveform. The results are fascinating and the analytical capability almost limitless! Help pages within the program give details of how the entry must be formatted and the same help information is available in PDF form for download. There are also example files to help you learn the techniques.

This software has been virus checked using Norton AntiVirus with up to date virus definitions and compiled on a PC which has never been infected so we have done all we can to make sure it is safe to use but we always recommend the use of virus checking software on any PC for your own protection whenever using downloaded software. We also recommend that you keep backups of valuable data.

We suggest you place all executable, help , circuit, waveform, filter, window files in the same directory initially

To Download the Full Program FFTNET.EXE Click Here (128KB)

Help Files are included but also available in PDF FFTHELP.PDF

Example circuits are in the same ZIP file as above CCTXMPLS.ZIP

Waveforms, filters and windows are in the ZIP file FFTXMPLS.ZIP:

Simple Sine Wave
Simple Square Wave
Simple Noise Waveform
Luminance Pulses
Chrominance Pulses
Lum + Chrom Pulses
Video Pulse & Bar 		SINE.WAV
SQUARE.WAV
NOISE.WAV
LUMPULSE.WAV
CHRPULSE.WAV
VIDPULSE.WAV
PULSEBAR.WAV
Low Pass Filter Function
Low Pass Filter Function 		LOWPASS1.FIL
LOWPASS2.FIL
Hanning Window Function HANNING.WIN

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Keywords: free, software, circuit analysis, network analysis, waveform analysis, circuit, waveform, FTT, fast fourier transform.