This Sample & Hold circuit configuration is from an American 1980s documentation. The circuit uses components from the era, serving as a reference for studies or circuit analysis.
This circuit is from an old American documentation using LEDs in the rectification. The circuit...
This source only uses passive components (without transistors or integrated circuits) and even so it...
This four-digit circuit was found in a 1990 documentation. The sensor can be a contact or reed...