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.
This linear circuit was found in a 1965 Electronic Design. The transistors are from that time....
This circuit was found in General Electric documentation from 1966. The circuit is suitable for any...
The circuit shown in the figure allows a load to be switched on and off (through a relay) at...