This reflectometer or standing-wave ratio meter (SWR) was found in a 1980s American documentation. The diodes support general purpose equivalents.
The basic purpose of this circuit is to apply an audio signal to a video carrier for sound and...
We found this circuit in Motorola's Circuit Applications for the Triac 1971 manual. The circuit is for ½...
This circuit for medium and short-wave ranges, according to the transistor used, was obtained in...