Yip here. The are all from the spreadsheet or the PAK User Guide.
Mouse-over shows the sheet it came from. EG "Fig4s2aCCT" is the circuit found on Sheet 4.
The "4s2a" means Section 4.2 in the User Guide.
The following shots are provided:
Probably not for some time. It will take a while for the PAK project to solve and collect enough circuits and helpful information for any designer to design power amplifiers. See the Goals page for a roadmap.
No. That was not the intention with the PAK project. The PAK spreadsheet may look like a simulator because it produces plots like a simulator. But the spreadsheet plotting aspect is to demonstrate what the equations can do without using a SPICE engine (the numerical equation solver). A PAK spreadsheet cannot solve arbitrary circuits like a simulator, so a SPICE numerical solver will always be needed. The PAK equations used in the spreadsheet show that some circuits can be calculated using explicit equations for bipolar transistor amplifiers, like Iout=Function(Vin, all component values).
On the contrary, if simulators (or Math-Cad packages) include some (or all) the equations developed by the PAK project then the PAK spreadsheet is no longer needed. For example, some circuit blocks (like mirrors or constant current sources) can now be represented by a compact code model equation set within the SPICE simulator. This reduces the matrix size which can make simulators run faster and more robust.