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 uses a triac to detect the level of a reservoir, and a sensitive SCR connected to the...
This circuit came out in the American magazine Electronics Now, in a 1993 issue. The magazine no...
This circuit is from the Analog Devices component datasheet. In it we have the way to obtain a low...