This sophisticated metronome has accented tones for better use. The circuit is from Radio Electronics from December 1985. The amplifier stage is provided.
Found in a 1960 Sylvania manual, this circuit can be implemented with a modern equivalent...
This configuration, already presented in other points of this section and website, is of a...
We found this precise crystal oscillator for the 144 MHz band, depending on the crystal used. The...