GX-TXT-v3 is a compact IR remote control tester with adjustable gain and sensitivity, 20-second auto-off, PCB layout, and assembly details.
The new version of the IR Remote Tester PCB has arrived, along with the solder paste stencil…
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.
GX LII-2 measurement-system characterization: injection amplitude, THD, A/B orientation, DUT impedance, and LTspice comparison.
Self-built injection transformer for Bode and loop-gain measurements, with calibration bench, GNU Octave processing, and LTspice comparison.
Ethical eating in the city: sustainable choices, local food, biodiversity, minimal packaging and emerging alternatives from science.
A stolen identity card, old photographs and a clerk’s unexpected decision become a brief reflection on memory and identity.
High-resolution audio goes beyond the CD standard, offering sample rates of up to 192 kHz and 24-bit depth. While some listeners praise its greater naturalness and detail, others question the practical value of frequencies above 20 kHz. Scientific studies and psychoacoustic tests have produced conflicting results, fueling an ongoing debate over perceived quality, the limits of human hearing, and possible technical distortions.
Why can an LED bulb remain faintly lit or flash after switching off? A practical explanation of residual current, wiring capacitance, dimmers and switches.