This 1924 receiver uses a battery for the tube filaments and a high voltage battery for the amplifier and detector circuit. The speaker is kind of high impedance era.
In the figure we have the way to configure a control for incandescent lamps with full wave control...
The gain of this amplifier depends on the component values as well as the operating range and the...
This circuit was obtained in an Electronque Loisirs magazine from France, in a July 1991 edition. It...