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 inverter circuit was found in a Radio Electronics. It shows the basic configuration of a...
Found in a 1980s American publication for amateur radio this circuit uses components from the era. The...
The figure shows how to implement a stage with an emitter follower. The stage has high input...