This is yet another balanced modulator circuit for SSB transmission. This two-diode circuit was found in a 1980s documentation. The diodes are commonly used.
We found this circuit in an old American documentation from years 80. The diode determines the frequency...
The slope of an object causes the sensor, a mercury switch to be triggered. The circuit activates...
I found this simple circuit in an English magazine from 1984. The circuit can be assembled easily...