This circuit is from a 90's documentation. The circuit is simple, as it uses only two transistors, and the control is done by pressure switches. The indication is done by LEDs.
The circuit shown consists of a bilateral constant current source with an operational one that...
The sound of this experimental musical instrument is produced by the movement of the hand in front...
We found this circuit in a Japanese 1968’s documentation. The circuit makes use of transistors from...