Category: Circuit simulation

Starting from the characteristic curves published by General Electric, I digitized and analyzed the 2D21 thyratron grid current to build a reproducible compact mathematical model. In this article I describe the full process, from replicated digitizations and uncertainty estimation to family normalization, identification of common functions, and quantitative validation of the 2D21 Level-1 v0.1 model.

SPICE model of the 6BX7-GT derived from GE datasheet curves, with digitization, Koren fitting, independent validation and ngspice testing.

A study of the Koren triode model: equations, parameter meaning, limitations, 6BX7-GT fitting and independent LTspice validation.

A circuit inspired by the NE555, built entirely with transistors, resistors, capacitors, and diodes, becomes a test bench for the SPICE simulator I am developing on my server.