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 was found in ancient American documentation. Diodes are general-purpose types. |...
The circuit of the figure consists of a motor timer that can delay drives for up to 15 minutes....
This multi-purpose power supply provides voltages of +15, -15, 300 and 1 000 V and is very useful on...