The purpose of this circuit is to check the linearity of SSB amplifiers. The circuit was found in an old documentation for hams. The diode is a general purpose detector type.
The integrated circuit used in this trigger is uncommon today. We found it in a documentation from...
We found this circuit in an English documentation from the 80's. Transistors are general-purpose types....
At each switch position, a diode is connected in series with the motor, thus causing a small...