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  • Photo Sensor Application Note
    The basic circuit of an optical sensor is shown in Figure 2-2.1(a). The anode of the LED is connected to the power line VCC via resistor RE and the cathode is grounded.
  • Sensing Light with a Programmable Gain Amplifier
    Photo sensors bridge the gap between light and electronics. Microchip's Programmable Gain Amplifiers (PGAs) are not well suited for precision applications (such as CT scanners), but they can be effectively used in position photo sensing applications minus the headaches of amplifier stability. When
  • Applying Photo Microsensors
    Omron designed a cost-saving line of small photoelectric sensors to fit space-confined areas that operate in relatively clean manufacturing environments. Most photomicrosensors have enclosures rated IP50, so they are ideal for mounting in transit rails for robots and positioning tables, inside
  • Using a Digital Potentiometer to Optimize a Precision Single Supply Photo Detect
    Photodiodes bridge the gap between light and electronics. Many times precision applications such as CT scanners, blood analyzers, smoke detectors, position sensors, IR pyrometers and chromatographs utilize the basic transimpedance amplifier circuit that transforms light energy into a usable
  • Fast Response Optical Sensors Prove Invaluable in Demanding Gaging Applications
    . The MTI-2100 Fotonic Sensor System (Photo 1) consists of a mainframe signal processor/controller which accepts up to two fiber-optic probe plug-in modules. The plug-in modules incorporate a seven-position low-pass filter and a three-position high-pass filter for improved signal to noise ratio
  • Case Study - Light Butler: An Integrated Lighting System
    While working on a home lighting project, Alan Butler found a need for a lighting control device that combined a digital timer, motion detector, photo sensor and dimmer in one compact package. Searching the shelves of some large home centers in Alpharetta with no success, he discussed his lighting
  • Adding a Tiny Position Sensor to Existing Digital Still Cameras Reduces Power Use, Improves Autofocus and Zoom Performance
    the "wait time" for taking a photo. The increased precision will also allow designers to use smaller optics in their next product iterations.
  • Active Matrix LCD with Integrated Optical Touch Screen
    A 2.4 in. by 2.4 in. TFT LCD is presented with an embedded 60x60 array of a-Si photo sensors, for use as a high performance touch-enabled LCD with low cost. In the shadow mode the optical touch screen operates with finger or stylus input under ambient lighting conditions from 50 lux to 50 klux. TFT

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