This circuit has a sensitivity of 2uW. We found it in documentation from the 1980s. The integrated circuit is from that time. Equivalents can be tried.
This control allows to start or stop a motor up to 3 or 4 A with a low intensity signal. The...
This circuit was obtained in a 90s American documentation. The integrated circuit used is uncommon...
This simple power supply circuit triggers when the light on the LDR reaches the level set on the...