This 4-tube circuit was found in an American publication from 1947. It is intended for audio distribution lines using a transformer source.
ts component datasheet which can supply currents of 1 A (1.125 V and 400 mA (1.2 V). The inputs can...
Found in an Analog Devices documentation from the 90s, this circuit uses a component of the time,...
This circuit is placed between the instrument pickup and the amplifier input. The same version can...