This circuit is from a 1980's documentation for telecommunications. The circuit is used in SSB and the diodes must be suitable types for the application. The audio input is low impedance.
Pressing and releasing S, the capacitor C1 charges and discharge slowly through the oscillator...
We found this circuit in a 2005 Linear Technology manual. The circuit makes use of the LT6101 and...
This circuit was obtained in an old American manual. The circuit is valid for any operational. The...