Phototransistor Optical Ttrigger (CB14648E)

This configuration was found in the Texas Instruments optoelectronics manual. PNP transistors support equivalents and the phot transistor does.

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Linearity corrector for thermistor (CB21387E)
This temperature sensor circuit was found in an old American documentation. The components used...
Divide-by-16 Counter - 4520 (CB176)
The normal use of a 4520 as a divide-by-16 counter is shown in Figure bellow. In the normal...
Courtesy Light Expander (CB4958E)
This circuit keeps the courtesy lights of a car on for a while after the doors are closed. The...