This 1967 General Electric circuit makes use of an array of 3 (integrated) transistors for an amplifier stage. The circuit has a 500 mV output.
Found in Precision Monolithics documentation from the 90's, this circuit equalizes octave signals...
This interesting circuit from Radio Elecronics from October 1965 shows a flip-flop or bistable with...
Found in an old American publication, this circuit generates signals of various waveforms. The...