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 the PC documentation from 1996. The maximum current of the motor is...
The L coil of this receiver determines the received waveband. The circuit is from a 1963...
This circuit is an improvement of the previous one, with the use of two transistors produces a...