This circuit also detects IR, providing LED indication. The circuit is used to indicate humidity in bench tests. We found it in the Radio Electronics magazine of February 1990.
This circuit generates quadrature signals, that is, with a 90-degree phase difference. The circuit...
This circuit is from Radio Shack documentation from 1977. It aims to demonstrate the principle of...
This bistable circuit with the CMOS 4014 can be found in several ways in this section and on this...