This circuit can be used as an answering password system in a store, office, or other location. The circuit is from Intersil using components of the time. The circuit is from the 80's.
The integrated circuit used in this regulator is not very common today. The circuit is from old...
This circuit uses a dual gate MOSFET and was found in an American 1980s documentation. The same...
This configuration can be implemented with equivalent operations. The circuit is from the 1990...