This cascade circuit was obtained from old Signetics documentation. The circuit makes use of special neon lamps that act as valves. Observe the high supply voltage.
The circuit shown fires an auxiliary flash from a flash commanded directly by the camera. The sensor...
This circuit, obtained in an old publication, causes a second telephone bell to be played in a...
The project is from a 1992 publication, but totally current by the components it uses. The LEDs...