This circuit, which can act as a shield, was found in a 1970s American documentation. The configuration can be applied to modern equivalent integrated circuits.
This simple CMOS touch switch was obtained in a 1987 publication. All components are common and the...
This circuit is from a current regulator up to 1 A, ie a constant current source. The LM320...
Found in a Popular Electronics from the 90s, this circuit reaches 100 kHz and battery power is...