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GlassWare Audio Design Software

TCJ Push-Pull Calculator Improvements

 

·          Rebuilt simulation engine

·          Create reports as PDFs*

·          More Graphs 2D/3D*

·          Help system added

·          Target idle current feature

·          Redesigned array creation

·          Transformer primary & secondary
     RDC inclusion

·          Ability to save user-defined
     transformer definitions

·          Enhanced result display

·          Added array result grid 

* User Defined

TCJ Push-Pull Calculator 

The program's name, “calculator,” reveals the metaphor behind the program’s functioning: like a financial calculator that is preformatted to deal with loans and interest, TCJ Push-Pull Calculator is preformatted to deal with tube output stage voltages and currents. The variable placeholders are presented and the values entered by the user, then one or more simulations performed, and the results are calculated and displayed.

 

TCJ Push-Pull Calculator has but a single purpose: to evaluate tube-based output stages by running simulations of eight tube output stage topologies’ (five OTL and three transformer-coupled). The simulation’s results reveal the actual performance of an output stage with a specified tube, power supply and bias voltage, and load impedance.

Updated!
TCJ Push-Pull Calculator
has been updated to version 2
TCJ Push-Pull Calculator’s user interface, as they say in the software trade, is expansive; thus, a two notebook (or two sets of file folders) visual metaphor is used. The left side of the program is devoted to user control of the program: opening and saving files, selecting the topology, defining the circuit’s variables, setting up the simulation options, creating reports, and altering a graph’s appearance. The right side is committed to the simulation’s results: columns of information on output into the load, the amplifier at idle, the amplifier at full output, graphs displaying distortion, the output voltage and current into the load (like an oscilloscope), and plate curves for one tube or both tubes at once.

 

Displaying a circuit simulation's results on the "Results" page makes for an easy and quick evaluation of what you have in hand. Like a geographical positioning device, it tells you where you are, but not where you came from, and more importantly, where you could be. Which is better more tubes or more B+ voltage? When does the law of diminishing returns take hold in you OTL amplifier design, e.g. would 20 tubes really be that much better than 16 tubes? The only way to find out is to perform multiple tests, varying the key variable(s), tabulating the results from each simulation. Or you can let TCJ Push-Pull Calculator do it all for you. Built into the program is an array-variable functionality. You decide which of eight variable to change in value with each simulation. Then the array of results are displayed in four of the seven graphs.
TCJ Push-Pull Calculator     Schematics    Simulations    Results     Creating Reports     Graphs   Tube Library     Help System