Suggested by an American publication, this circuit has 5 operating conditions indicated in the diagram. The circuit can be designed based on modern equivalent transistors.
This interface or shield circuit provides an output 1 from 3.3 V logic. The circuit is from old...
We find this circuit in an American 1980s documentation. Modern equivalent integrated circuits can be...
The circuit that gave rise to this configuration is from 1978. In the original publication are...