We found this circuit in a Linear Technology documentation from the 90's. Check the availability of new equivalents for the integrated if you need a new project.
This circuit with a double-gate MOS transistor was found in a Popular Electronics from the 90's....
This photoelectric cell light relay was found in Radio Electronics magazine from April 1958. The...
This circuit was obtained in the publication 101 Electronics Projects of 1979. The circuit can be...