This basic relay configuration was found in a July 1994 Electronics Now. The relay is supposed to be sensitive, and the times are changed by changing C1.
We found this 4.5 MHz amplifier for video signals from old analog TVs in the June 1992 issue of...
This circuit was found in the 1990 Motorola Dataar Linear. We can mount it with more modern...
The oscillator shown in the figure can generate signals between 3 and 15 MHz approximately, depending...