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.
This circuit came out in a Popular Electronics from December 1995. It is a double T configuration that...
This low power amplifier, with 2 W in charge of 16 ohms, was found in a Japanese magazine from the...
This circuit was found in a 1967 US documentation. It shows how to build a gain control by digital...