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.
We found this circuit in the October 1992 Radio Electronics magazine. The frequency is given by C1...
This low-frequency relay oscillator was obtained from an article in Electronics Now magazine in...
April 2017 - The new MEMS DSC600 oscillators with Microchip technology are in stock at Mouser...