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.
We found this circuit in an ancient American documentation. It can be adapted to operate in other...
This circuit was found in a 1965 Electronics Design. The configuration can be applied to current...
Found in an old publication, this circuit uses an analog milliammeter to indicate the position of a...