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.
Found in a 1980s telecommunications documentation, this balanced modulator circuit uses...
This circuit was found in a 90’s 303 Circuits. The components are from the period and the heating...
This simple receiver that works with only 1.5 V, was found in a 1987 documentation. The integrated...