Found in an Electronics World of 1968, this circuit is indicated for applications in photography making the control of a camera aperture. The components are from the time.
An OR gate can be implemented with an LM3900 transconductance operational amplifier. The circuit is...
This circuit was obtained in an old American documentation, remembering that the 566 is the double...
This circuit has a consumption of only 3.7 mA and can be installed in vehicles or objects for...