Found in RCA documentation from the 1970s, this circuit uses currently unusual integrated circuits. The circuit is of the experimental type not tuned.
This circuit triggers an oscillator when any of the sensors is opened. The circuit can be powered by...
This circuit imitates the singing of a bird intermittently with the intermittency determined by C1...
This is a high gain circuit with 3 transistors connected in direct coupling. The circuit is from a...