Designed by Philips in 1968 to control the washer water level this circuit uses components from the era. The circuit actuates the water inlet valve.
This configuration for switching signals uses only common general-purpose diodes such as 1N4148. The...
This digital electronic game circuit was found in a 1982 publication. It randomly draws the...
This version works in the opposite way to the previous one, activating when the light falls on the...