This transistorized circuit appeared in a Radio Electronics magazine in March 1958. The frequency range depends on the tuned circuit, being within a few megahertz.
An electric wind flow obtained by the corona effect can be obtained with this circuit from Radio...
This simple circuit found in a 1968 EEE was intended for data transmission over the telephone...
This very simple circuit was found in a 1977 documentation. The L1 coil has 3 turns of AWG wire 22 to...