Found in an American publication from the 1980s, this circuit can be found in commercial sound equipment of the time. The list with the component values is given next to the diagram.
This circuit compares the voltages of the two inputs giving as output 0 or 1 according to the...
This circuit, which may have more inputs, consists of an optical OR gate using common...
Using a 4046 PLL this circuit generates rectangular signals in three wavebands that depend on the...