This small tube amplifier appeared in Radio Electronics magazine in February 1958. The circuit is powered by the mains with a power transformer and output with different impedances.
The circuit in the figure is suggested by Microchip (www.microchip.com), being built around the...
This excellent amplifier, found in a 1986 documentation, provides good power and is powered by a...
This circuit was found in an old Electronics Now. The transistors are general- purpose and the...