We found this mixer in an American documentation. Operational amplifier supports equivalent and changed number of inputs. Power can be between 6 and 12 V.
The circuit is from Motorola's Linear Databook from 1990, but the configuration is current because...
Found in a 90’s 73 magazine for radio amateurs, this circuit provides a few milliamps of output...
This is another one of the many versions of this circuit that we have in this section. We found it in...