Found in a 1968 Motorola manual, this DC circuit uses components from the era. The circuit fires in microsecond times. The Q3 transistor must be according to the controlled load.
This transmitter for the 40 meter or 7 MHz band was found in a magazine 73 for radio amateurs of...
This shortwave preselector was found in the July 1994 issue of Radio Electronics magazine. The...
This circuit was found in a 1967 RCA documentation. The components are of the time. The circuit...