The operational 714 (not the 741) is an old Raytheon type that is no longer common today. The circuit can be implemented with modern operational. The power supply must be symmetrical.
This circuit, which applies to configurations with triacs of the TIC series, was found in a...
This simple standing waveform (ROE or SWR) meter is used to adjust antenna matching with...
This circuit has a visual indication of activation and is suitable for people with hearing...