Temperature Compensation Optocoupler

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  • Subscriber-Loop Digital Transmission Using Opto-Electronic Transmitters and Receivers
    diodes so that optocoupler photodiode dark current does not exceed the compensating current over the whole temperature range.
  • A Low-Cost Power-Quality Meter With Series Arc-Fault Detection Capability for Smart Grid
    Since the optocoupler contains a second photodiode that is used as a feed- back for input stage to compensate for LED starvation and tem- perature influence, the isolator has very good linearity (photo- voltaic topology used in the system, meets 12-b …
  • A gain-programmable transit-time-stable and temperature-stable PMT Voltage divider
    The optocoupler consists of an infrared light emission diode (LED) optically coupled with two phototransistors, and one is used in a servo feedback circuit to control the LED drive current for com- pensating temperature characteristics.
  • http://www.onsemi.com/PowerSolutions/product.do?id=NCP1217&pdf=Y
    • Current-Mode with adjustable skip-cycle capability • Built-in internal ramp compensation • Auto-recovery internal output short-circuit … … low no-load standby power • Internal temperature shutdown • 500mA peak … … and 133kHz • Direct optocoupler connection • Internal Leading …
  • Dubbel
    … 24 Q low pressure H 2 low pressure-air conditioning M fuel consumption 39 low pressure-mold casting S low to 12 low stroke cars U 45 low temperature heating boiler M 31 … … 54 -, hydraulic valve clearance compensation P 53 -, overhead P … … measuring sizes W 21 optoelectronic components I 14 optoelectronic displacement sensors W 12 optocouplers I 14, I …
  • Handbook of Modern Sensors
    That sensor is part of a digital thermometer that displays the temperature of the mirror. The hygrometer’s circuit is of a differential type, where the top optocoupler , a light-emitting diode (LED), and a photodetector are used for the compensation of drifts, while the bottom optocoupler is for measuring the mirror reflectivity.
  • Handbook of Modern Sensors
    That sensor is part of a digital thermometer which displays the temperature of the mirror. The hygrometer’s circuit is of a differential type, where the top optocoupler , a light-emitting diode (LED) and a photodetector, are used for the compensation of drifts; the bottom optocoupler is for measuring the mirror’s reflec- tivity.
  • Optocoupler driving of MEMS electrostatic switches
    Disadvantages cannot, however, be disregarded, such as the low power efficiency of the optocoupler itself, low switching speed and temperature dependence of the output voltage. Some of the advantages such as the galvanic isolation can compensate these disadvantages in specific applications.
  • Constructive feedback [switched mode power supplies]
    … higher frequencies most of the gain of this particular feedback system is actually offered by the optocoupler . But this varies widely enough with operating temperature for some compensation to be necessary.
  • A circuit with good linearity based on standard optocouplers
    It chooses two ordinary optocouplers of same characteristic. One phototransistor is typically used in a feedback mechanism to control the LED (light-emitting diode) drive current which has the effect of compensating for the LED's non-linear time and temperature characteristics.