This circuit, to control air conditioning systems, was found in July 1984 Radio Electronics magazine. The circuit is for old types of the time that did not have microcontroller control.
This circuit was obtained in an American documentation from the 90's. The circuit can be...
Although the integrated used originally is uncommon today, more modern operating equivalents can...
This circuit is designed to measure very weak currents, in the order of picoamperes. We found it...