This circuit was found in a 1968 General Electric documentation. It has an input impedance of 2 M ohms and excites a load of 16 ohms. The integrated circuit of the time is the PA237.
This automotive circuit was found in the September 1992 issue of Radio Electronics magazine. The...
This low frequency astable multivibrator use two probes in the simulation. The probes ar found in...
This circuit with zener diodes was found in documentation from the 90s. The zener diodes determine the...