phototransistor love



from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A transistor having highly photosensitive electrical characteristics.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any semiconductor device whose electrical characteristics are light-sensitive.


Sorry, no etymologies found.


  • To do this, we'll use an infrared emitter and phototransistor detector.

    Wired Top Stories

  • FODM8801 consists of an aluminum gallium arsenide AlGaAs infrared light emitting diode optically coupled to a phototransistor.

  • The presence of clear liquid causes the phototransistor to sink the maximum current, while the presence of dark liquid causes it to sink the minimum current.

    The Gadgeteer

  • The output phototransistor features a maximum collector-emitter voltage of 24 or 30V, with collector dc current of 50mA and power dissipation to 100mW.

    The Gadgeteer

  • When the system calibrates the sensor, it raises the current through the LED from 0mA to 14mA, until the phototransistor reaches the preset point.

    The Gadgeteer

  • The OCB350 Series sensor consists of an infrared LED and phototransistor packaged in an opaque plastic housing that enhances ambient light rejection.

    The Gadgeteer

  • If no tube is present, the phototransistor sinks current between the dark fluid and clear fluid states.

    The Gadgeteer

  • To make things interesting, we'll use an infrared LED and phototransistor to make the table rotate with just a wave of your hand.

    MAKE Magazine

  • Like the original OPB350 Series sensors, these devices use an LED/phototransistor to sense the change in refractive properties between full and empty tubing as it passes through the sensor housing, creating multiple output states such as "fluid present," "no fluid present," and "no tube present."

    The Gadgeteer

  • Most of these sensors use a circular disk placed between an LED light source and a phototransistor light detector.

    The Gadgeteer


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