Indicated by Texas Instruments, this 1968 circuit measures the duration of a light pulse captured by a phototransistor. Equivalent phototransistors and transistors may be used.
The presented project is simple, but efficient in medium distance irrigation. In this circuit, the time...
This 2002 circuit uses many more electrical components than electronics. The keys are common, and...
This traditional mixer configuration with a high input impedance was found in a 90’s Popular...