Resources Contact Us Home
Power supply dependent optical receiver and amplifier and photocoupler using the same

Image Number 2 for United States Patent #8129671.

In an optical receiver and amplifier and an optical coupler, a technique for stabilize operations at turning on/off of a power supply by a simple configuration is desired. An optical receiver and amplifier includes: a photodiode generates a photocurrent in response to a light input; an output section outputs output voltage being a low level or a high level in response to a magnitude of the photocurrent by using a power supply voltage supplied from a power supply; and an output control circuit controls an input voltage of the output section such that the output voltage is set to the low level when the power supply is turned on or off during a period where the power supply voltage is lower than a predetermined value. The output voltage can be set to the low level so that an additional circuit for preventing malfunction is not needed.

  Recently Added Patents
Multiple CQI feedback for cellular networks
Electrowetting display devices with a reflective plate structure
Semiconductor chip, stack module, and memory card
Family of pain producing substances and methods to produce novel analgesic drugs
Drinking glass with ball embedded in base
Cross-platform cloud-based map creation
Collaborative image capture
  Randomly Featured Patents
Polyester-imide toner and developer compositions
Method for designing formation tester for well
Online propagation of data updates
Process and diagnostic device for the determination of ammonia and of substrates which react with the formation of ammonia
Process for producing Fe-based member having high young's modulus, and Fe-based member having high young's modulus and high toughness
Method for producing nitride monocrystals
Spill containing refrigerator shelf assembly
Bordetella parapertussis whole-cell vaccine composition
Rectifying charge storage element
Corrosion-resistant film for protecting surfaces of Ag and corrosion-resist composite structures