This circuit was found in a 1965 General Electric documentation. SCRs and unijunction may be current equivalents. The circuit has period adjustment and symmetry.
This simple calibration circuit consists of a crystal oscillator that generates an accurate 100 kHz...
This circuit is from an old operational amplifiers manual. However, the setting applies to modern...
It actually consists of a tunable field strength meter. The circuit is of an old documentation and the...