This circuit produces the sound of percussion such as blocks, drum, bell, etc. The frequency depends on the marked capacitors, which can have a wide range of values depending on the desired sound.
For the testing of components, on the bench, the presence of an amplifier that provides pure...
This circuit serves as a reference for the components used and the time. The circuit is from 1967...
This circuit triggers at the touch of the sensor, passing its output from high to low level for a...