This circuit was found in a 1968 Motorola documentation. The circuit can be implemented with virtually any photo transistor and general-purpose transistor.
We found this circuit in an old oscilloscope publication. With it, it is possible to observe the B...
We found this circuit in an Electronic Engineering from the 90s. It applies to any logical family....
This circuit is from a documentation for 1976 radio amateurs. We can implement this circuit with...