This receiver was found in a 1924 book by Gernsback. The circuit uses three tubes and is powered by 3 batteries of different voltages, common at the time.
In this circuit we have the way to use common diodes to obtain low regulated voltages in a single...
This circuit is from a 2005 Linear Technology manual. The circuit uses an LT6700-3 and has an...
The crystal frequency of this circuit found in an American documentation is limited only by the...