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  • Modeling Phototransistor Optocouplers Using PSPICE Simulation Software
    While designed for measurement parameters like Voltage and Current, PSPICE programs are not comfortable with evaluating or simulating components in photometric units. This application note provides guidelines for using PSPICE to model phototransistor optocouplers.
  • Medical Device Link .
    Two types of optocouplers are available for use in implantable applications. The photovoltaic and phototransistor optocouplers provide gate drive voltage and effective isolation in small surface-mount packages. The 52464 photovoltaic optocoupler consists of an LED and photovoltaic detector
  • Rotary encoders for motors
    accurately than old-style tachometer-generators. The simplest encoder is the incremental style. Typically, it uses a slotted wheel placed between an LED light source and a phototransistor. As the wheel rotates, it alternately passes then blocks light shining on the phototransistor. The phototransistor
  • Switch Tips: Photointerrupter switches
    thermal constraints. Switches based on photointerrupters have no contacts, no lubricant, and only one spring. The switching action takes place by depressing a button that interrupts the optical path between an infrared LED and a photodiode or phototransistor. This provides a momentary "low

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