The sound of drums can be obtained with these two touch-triggered double-T oscillators. The circuit is from a Radio Electronics Special projects from 1993.
The figure shows the basic way to use a 7107, a 3 and ½ digit converter in a digital voltmeter. The way...
We found this wiretapping circuit in a publication from the 90s. The circuit allows the cable...
This circuit is from the 80s own LM10 manual. The circuit can be implemented with other...