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 was found in the April 1983 issue of Radio Electronics magazine. Its purpose is to...
Evidently, this is a project that still needs some improvements. For example, the ignition can be...
This very low voltage regulator for 3 V input (2 batteries) was obtained in a documentation from...