The presented circuit makes use of a common operational amplifier that must be powered by a symmetrical source. R resistors from 10k to 1M determine the gain and compression of the signal.
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...