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.
Mouser Electronics has in stock Amphenol FCI Booltrack ™ connectors for robust connectivity...
In the figure we show an application in which the 4093 excites a stage with 4 transistors in the...
This siren was found in a 1980s documentation. The circuit makes use of very old operational that were...