A study of the Koren triode model: equations, parameter meaning, limitations, 6BX7-GT fitting and independent LTspice validation.
GX-TXT-v3 testing shows how pulse count affects HOLD-node charging, LED turn-on threshold, and indication time.
GX-TXT-v3 HOLD-node dynamics: burst charging, exponential discharge, LED on-time and sensitivity characterization with GNU Octave.
GX-TXT-v3 sensitivity and threshold testing, following QIN, HOLD and orange LED behavior across gain and sensitivity settings.
GX-TXT-v3 testing with a virtual photodiode: VIR measurements, preamplifier gain, probe loading and LTspice comparison.
GX-TXT-v3 DC bias measurements, current consumption and NE555 timer verification compared with LTspice simulation.
GX LII-2 reactive-load Bode tests reveal fixture limits, repeatable phase rotation, and impedance-dependent measurement effects.
GX-TXT-v3 is a compact IR remote control tester with adjustable gain and sensitivity, 20-second auto-off, PCB layout, and assembly details.
GX LII-2 resistive-divider campaign: Bode measurements, A/B compensation, injection transfer, and FFT analysis in GNU Octave.
GX LII-2 lab log: Bode measurements, A/B compensation, harmonic analysis, clipping diagnostics, and GNU Octave automation.