This circuit, which can act as a shield, was found in a 1990 PE Hobbyst Handbook. The circuit generates logic pulses for different types of applications.
We found this circuit in an old General Electric documentation. In fact, PUTs are not common...
This circuit for analog video signals was found in a March 1988 Radio Electronics. The Maxim...
The circuit shown in the figure can be used to detect the operation of infrared sources whose...