This circuit was found in an American magazine 73 for radio amateurs of the 80s. It is an automatic transmission circuit for telegraphy. The circuit is TTL.
This circuit hás a Power output of more than 1 W. It is used in small experimental or low power...
This circuit is from a 2005 Linear Technology application manual. The circuit has an on-off...
This circuit was obtained in a 1990 English magazine. The circuit can be assembled with equivalent power...