Category: Electronics

Waveform Viewer di Giux-CalcLab con due pannelli che mostrano le forme d’onda periodiche di un multivibratore astabile discreto.

Laboratory Diary – A Transistor-Based NE555 as a Test for Giux-CalcLab

Scritto da giux | Pubblicato il 03/09/2026 | 0 commenti

GNU Octave? No—this article is about SPICE. The correct translation is:

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.

#555 timer #astable multivibrator #BJT #circuit simulation #discrete transistor circuits #electronic simulation #Giux-CalcLab #NE555 #ngspice #NPN transistor #PNP transistor #SPICE #SPICE netlist #transient analysis #waveform viewer

LED Theory: Basic Concepts

Scritto da giux | Pubblicato il 03/09/2026 | 0 commenti

An LED is a p-n junction diode that emits light through the recombination of electrons and holes. The color depends on the band gap of the semiconductor material. Current must be controlled, not voltage, to avoid damage…