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 an 80's Hands On Electronics, this circuit turns on a light when it gets dark and goes...
This servo circuit was found in 1969 Motorola documentation. Integrated circuits and transistors are...
This circuit uses a common-cathode 7-segment display powered from a decoder and a 0-9 counter. The...