Reading time: 2 minute The presented project successively lights 2 consumers of maximum 20W due to the TIP41 power transistors. The circuit uses a stable configuration consisting of two 2 transistors, two polarizing capacitors and 4 resistors.
Label: stable circuit
Stable circuit with 2 LEDs - Electronic fireflies
Reading time: 2 minute "Fireflies" is the popular name for a stable circuit with 2 LEDs that light up successively. The project presents an electronic module for initiation in the field. The assembly is powered by a 9V direct current source.
Head or straw game - made with transistors - "Heads or tails" game
Reading time: <1 minut The project presented is a stable tilting circuit adapted to simulate the head or straw game. These types of circuits do not have stable states, they switch continuously between two unstable states, the transistors on the two branches passing one by one from the conduction state to the saturation state (tilting).
Practical assemblies with integrated circuit 555 - Automatic direction changer (round trip)
Reading time: 2 minute Despite its extremely large age, in this world of electronic components that is in perpetual motion, the age that has exceeded two and a half decades, the 555 circuit remains among the most popular, with almost no electronics magazine (in the country or in abroad) that does not contain an assembly with this IC should not be part.