With this circuit it is possible to measure RF signals with a common multimeter. Signals up to 200 MHz can be detected. The diode supports general-purpose equivalents.
This circuit was found in an ancient American documentation. The transformer is the type used in...
Found in an Electronic Design from the 90s, this circuit provides outputs according to the input...
This isolated non-synchronized triac and optocoupler circuit was found in the August 1992 issue of...