This circuit was obtained in a 1964 Electronic Design. Equivalent modern transistors can be used. The circuit requires a 6 V symmetrical power supply.
This circuit, from a former publication of 1968 was originally designed for germanium transistors, but with the...
This circuit was found in the October 1993 Electronics Now magazine. The output transistors form...
This circuit appears in similar versions elsewhere on this site. The transformer is 110 V or 220 V...