This circuit has the function of automating some type of equipment when a powerful transmitter is activated nearby. The circuit was found in a 1967 documentation.
The presented circuit uses a symmetrical power source to supply an amplifier with the LM139 or...
This circuit was obtained from the 1995 Encyclopedia of Electronic Circuits Volume 5. The circuit...
The circuit shown is from the 1994 Linear Applications Handbook by National Semiconductor. Some of...