This circuit was found in a 1992 publication. What it does is to light an external lamp when it gets dark. The trigger point adjustment is made in a potentiometer or trimpot and the sensor is a common LDR.
We found this oscillator in a 1978 amateur radio documentation. The circuit supports other...
This circuit activates 5 LEDs according to the level of the analog input signal and can be used...
Found in the April 1978 issue of Radio Electronics magazine, this circuit is intended to be...