This electronic Morse Key for telegraph message transmission was found in an American 1980s amateur radio documentation. The circuit uses TTL technology and must be powered by a 5V voltage.
This circuit is a traditional configuration with the 741 Operational Amplifier and its gain is...
The MC1436 can also be used on this circuit suggested by the 1993 Motorola Linear Interface ICs. The...
This continuity tester for low resistances was found in an English magazine from 1978. The circuit...