This circuit triggers a Sonalarme when the LED used as a sensor receives light. The circuit was found in an old documentation, but the components used are all current.
This circuit can be used for signaling a panel with a common incandescent lamp. The lamp will...
This circuit, suggested by General Electric, increases the sensitivity of a common multimeter to 1 M /...
The LM105 integrated circuit consists of a voltage regulator integrated in a metallic enclosure. The...