This circuit was found in a Popular Electronics from the 90s. The circuit uses common components today. The waveform of the generated signal is shown next to the diagram.
Found in an American publication of 1968, this circuit makes use of a pilot light of the time. It...
This circuit was found in documentation from the 1980s requiring a variable power supply from 0 to...
This car alarm was found in an American '80s documentation. The circuit automatically activates...