Found in a Popular Elecronics from the 90s, this circuit appears in other versions in this section and on the website. The circuit draws one of 10 LEDs and has a sound effect produced during the draw.
This circuit for controlling AC loads in the power grid was found in a 1967 Electronics World. The load...
In this circuit, from a documentation from the 70's, we have the way to control the active cycle of...
This CMOS driver for triac was found in a 90s documentation. The circuit has direct action,...