Tonne Software logo Tonne Software, home of good engineering software

A site for the technically inclined,
offering to the fraternity a collection of
original engineering software.

Browse, choose, download.

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These programs are copyrighted and are not to be placed on another website
nor are they to be placed on any medium for any purpose excepting a single instance
in which ye scribe and the posting party have both entered into a written contract.
If you find any of these programs on another site do not download them:
they are commonly obsolete and have added spyware.
Go to the filter design program
a Windows® electrical filter design and analysis program handling all of the usual options (family, topology, bandwidth, etc.). It has a nice toolbox including real-time tuning modes and optimization. Outputs are presentation quality.
Go to the filter design program
Go to the meterscale program
a Windows® meterscale drawing program to allow you to design and print professional-quality meter scales on your printer. Nice options include the ability to import a graphic (and resize and place it where you want), make a modern-looking "flattened" scale, use seriff or sans-serif fonts of any size and specify the scale colors. And lots more!
Go to the meterscale program
Go to the SVC filter design program
a Windows® electrical filter design and analysis program designed to expedite the design of lowpass and highpass filters using Standard Value Components (nearest-5% values).
Go to the SVC filter design program
Go to the Optimized Lowpass filter design program
a specialized Windows® filter design and analysis program designed for the serious radio amateur to expedite the design of optimized amateur-band output transmitter lowpass filters.
Go to the OptLowpass filter design program
Go to the helical-resonator filter program
a Windows® program to help you design and analyze helical-resonator bandpass filters, usually used in the VHF and UHF frequency ranges.
Go to the helical-resonator filter program
Go to the diplexer program
a Windows® program to allow you to design and analyze diplexing networks using either the highpass/lowpass or the bandpass/bandstop topology.
Go to the diplexer program
Go to the PI-EL program
a Windows® program to allow you to design and analyze PI-L matching networks.
Go to the PI-EL program
Smith Chart program
This Windows® program allows you to manipulate network components as if you were doing it on a printed Smith Chart but is designed to be much more intuitive and user-friendly. Inputs are the operating frequency, the R and jX value for the load and the network components, up to five. Various network topologies may be entered and tuned. Outputs are the usual collection of Smith Charts.
Go to the SuperSmith page
Go to the quadrative network design program
an interactive Windows® program to allow you to design and analyze the active networks used for single-sideband signal generation. Accepts orders from two to ten, specified operating frequency range and analysis frequency range. Reveals sideband suppression, chain angles and angle differences. The program has a component-tuning mode. Arbitrary components may be used, or nearest 1% or 5% values and results seen. Writes Spice file.
Go to the quadrative network design program
     
Miscellaneous items Papers, AppNotes and miscellaneous programs  
     
Go to the Sites page Other technical sites you may find interesting or useful  
     
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