This sophisticated metronome has accented tones for better use. The circuit is from Radio Electronics from December 1985. The amplifier stage is provided.
We found this timer circuit in an American documentation from the 1980s. The circuit uses the 6 V...
This circuit requires an input current of only 20 fA (femto amps) which corresponds to a...
This circuit is from an old documentation. Integrated circuit 723 is not common today. The power...