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 provides a signal that is twice the frequency of the input signal. The circuit was...
An interesting application of the 4093 integrated circuit is the one shown in the figure, in which...
This tunnel diode oscillator was found in July 1986, Radio Electronics magazine. Note the low...