This interesting circuit in which the LED display is circular imitating a common clock appeared in the Radio Electronics magazine of May 1977. The power supply is included.
In this circuit the gain decreases as the input signal intensity increases. The circuit is from a...
This circuit was found in an American 1980s documentation. Dual FETs can be replaced by single...
September 2016 - Mouser Electgronics already has in stock the new moisture digital sensor HDC1010...