This circuit is from an old documentation. However, it can be mounted with modern equivalent transistors.
The purpose of this circuit found in a 1990 documentation is to control two incandescent lamps or...
The recommended distance between the emitter and the sensor of this coupler is 15 mm. The circuit is...
This circuit, which can act as a shield, was found in a 1990 PE Hobbyst Handbook. The circuit...