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 is the transmitter of the transmitter of a micro remote control that appeared in the November...
This is a classic FM amplifier IF amplification stage configuration. The circuit is from a 1980s...
August 2016 - It can be obtained from Mouser Electronics the new operational amplifiers series...