This circuit was found in a Popular Electronics from the 90's. The operating curve is given next to the diagram. The power transistor must have a heat sink.
This receiver for listening on the phone was found in a Japanese magazine in 1967. The circuit uses...
In the diagram from the November 1999 Electronics Now magazine we have the way to improve both the...
This circuit reproduces in a small loudspeaker the sound of the signal that modulates a...