We found this circuit in an American publication from 1977. The circuit drives two LEDs according to the control of the inputs. The technology is TTL requiring 5 V to power supply.
This nonlinear gain circuit was found in a 1965 Electronic Design. The configuration can be used...
This circuit is from an English documentation from 1969. The circuit can be designed based on...
This circuit, with adjusted sensitivity, can use common general-purpose transistors. The circuit is...