Using transistors at the time, this circuit was found in a 1970s documentation. Transistors support modern equivalents for 2A currents at least in the case of the output transistors.
This two competitor version of the game is shown below and uses lamps as indicators. You can...
The first circuit we present consists of a step-down DC / DC converter with input voltage from 2.5 to...
) This is the original application of the National Semiconductor LM3909 low consumption pulsator. The LED...