This circuit indicates the logical level of a CMOS circuit, extracting the power from the circuit being analyzed. The circuit is from an American magazine from the 90s.
We found this circuit in a 1990 documentation. Its purpose is to maintain the charge of a battery, the...
This circuit was originally described for use in photographic enlargers. The circuit is from a...
This interesting configuration was found in a 1965s Electronic Design. It makes use of components of...