Tube CAD is the tube audio circuit computer aided design program from GlassWare for Windows 9x/Me/ NT/2000. Tube CAD includes 13 types of tube circuits, divided into four variations each-52 circuits in all.
The circuit types are: Cascode, cathode follower, common cathode, differential amplifier, grounded cathode, grounded grid, I to V converter, long tail phase splitter, plate follower, push-pull, split-load phase splitter, totem-pole, and white cathode follower.
The metaphor used is that of a notebook with 13 pages, one for each circuit type. Clicking on the tabs at the bottom of the program brings up that circuit page. Circuit schematics and plate curves require just a button click to be seen.
Circuit variables such as tube type, B voltage, plate and cathode resistor values, and coupling capacitor value are entered in field boxes or changed by sliding a horizontal slider control. After the "Calculate" button has been pressed, the AC and DC results are then displayed.
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