Found in American documentation from the 90s, this circuit can be applied to other operational ones. We found it in an EDN of the time. Next to the diagram is the response curve.
We found this circuit in an old documentation, but the components used offer no difficulty in obtaining...
This project was found in a 1982 publication. It is a small transmitter that can send signals from...
The circuit in the figure can be used to trigger a triac or even a comparator in a project that...