This circuit was suggested by General Electric in a 1969 documentation. The transistors are of the time and the power supply is not given. Note the high supply voltage.
The circuit shown in the figure can be used to detect the operation of infrared sources whose...
This circuit is from a factory manual from the 80s. The circuit can be implemented with more...
This circuit for the logic control of the 555 in a power supply was found in the October 1989...