This circuit was found in a 1967 US documentation. It shows how to build a gain control by digital signals. The circuit can be used as a shield. FET can be a modern equivalent.
This circuit was obtained from a Popular Electronics of the 80's. It is set to a certain pulse...
Found in an Electronic Design from the 80s, this circuit generates a 500 Hz signal and can be used...
August 2016 - It can be purchased from Mouser Electronics the new digital isolators ADuM120N and...