This simple power supply circuit triggers when the light on the LDR reaches the level set on the potentiometer. The circuit is from an Electronics Now from July 1995.
September 2017 - Amphenol PcD's Solaris Connector series is available from Mouser Electronics. In...
We found this circuit in a 90s Popular Electronics. The circuit can be implemented with modern...
This physical line servo control uses components that are not currently common. The circuit is from...