This circuit was found in a 1980s documentation for amateur radio. The circuit is for 9 MHz signals and values in parentheses for FI of 455 kHz. The circuit can be adapted to other frequencies.
This PNP transistor power stage was found in the May 1969 issue of Radio Electronics magazine. The circuit...
This circuit can operate at voltages of 0.85 s 6 V using the NC Semiconductor NCS2200. The circuit...
This simple circuit was found in Popular Electronics from 1992. The transistor is a...