QSPICE Forum Schematic Capture "A Frequency Response Analyzer (FRA) in QSPICE"

[mccunets]

For this week’s QSPICE schematic capture, we have “A Frequency Response Analyzer (FRA) in QSPICE” by our friend Kelvin Leung. This schematic capture is a demonstration of an in-depth project Kelvin has created using the Ø-Device (DLL-block). The FRA is a method that analyzes the relationship between signals in a system by injecting a perturbing source. (Schematic Capture Post #036) To access the project files, please go to: https://github.com/KSKelvin-Github/Qspice/tree/main/Projects/FRA%20Frequency%20Response%20Analyzer
example1.Buck-FRAnalyzerKSK.qsch (13.0 KB)
franalyzerksk.cpp (17.8 KB)
franalyzerksk.dll (61.0 KB)
FRAnalyzerKSK.qsym (4.0 KB)

Qspice Project - Frequency Response Analyzer by KSKelvin.pdf (641.9 KB)

[KSKelvin]

This is a variant with 2 transfer functions from the FRA Frequency Response Analyzer project. Symbols, code, and examples can be found at this link:
Qspice/Projects/FRA Frequency Response Analyzer - Dual · KSKelvin-Github/Qspice

example6.TransferFunction-FRAanlyzer2KSK.qsch
Two linear transfer functions in series to demonstrate obtaining two transfer functions with a single FRA

example1.Buck-FRAnalyzer2KSK.qsch
One simulation to obtain V(out)/V(duty) and I(L1)/V(duty) transfer functions

[physicboy]

That’s nice upgrade…So quick!