Despite being found in a 1980 publication, this circuit uses components that can still be found easily. The circuit feeds an array of LEDs that run randomly, stopping at one.
This circuit consists of two stages that each shift 180 degrees the signal. The circuit was...
This circuit was obtained from American documentation from the 1990s. The transformer can be a car...
This circuit is from an old English documentation. It uses a common milliammeter to indicate the...