This is a low-gain amplifier to operate as a booster. We found it in an American documentation from 1947. The circuit uses a coupling transformer at the input.
Texas Instruments SN74HCS08 Q1 2-Input AND Gates These Texas Instruments 2 to 6 V low voltage...
We found this circuit in documentation from the 1970s; The circuit uses Japanese transistors of...
This circuit was found in a 1989 documentation. The circuit directly controls a power load by the use...