This circuit, obtained from a 1965 magazine, can still be assembled using some modern equivalent components. The transistors may be BC558 and the transformer is obtained from a disused transistor radio.
We find this circuit in an American 1980s documentation. The circuit drives a system that keeps a...
This circuit was found in a 90s Electronics Now. It generates sinusoidal signals according to the...
This interesting circuit shows on a display the sequence of numbers corresponding to a decimal from 1...