Found in an old Radio Electronics, this circuit is intended for the modulation of composite video signals for application in old analog TV receivers.
With each touch on S1, an output of 4017 is activated, this in sequence 3, 2, 4, etc. These...
A touch of the X1 sensor causes the motor to be activated for a time that can be adjusted in P1....
The circuit illustrated in the figure can be used to detect earthquakes or vibrations of...