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.
This circuit is from a 1965 Argentine publication (Radio Chassis Television). The original...
Very rapid brightness changes or flares that occur on the sun can be detected with this circuit that...
The components of this filter are calculated using conventional formulas (see mathematics section of...