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
Image display device and capsule endoscope system
System and method of improving audio signals for the hearing impaired
Apparatus and method for manufacturing microneedles
Particles with high surface charge for crystalline colloidal arrays
Sports helmet
Test method for inspection device, particularly for label seating inspection device
Pill identification and counterfeit detection method
  Randomly Featured Patents
Naphthoquinone derivatives and their use in the treatment and control of tuberculosis
Pizza box with removable portions used as reward tokens
1,5-Diaryl substituted pyrazoles as p38 kinase inhibitors
Method of forming a conductive barrier layer having improve adhesion and resistivity characteristics
Mammalian CX3C chemokine
Bioabsorbable surgical screw and washer system
Solvent welding process
Systems and methods for price searching and intelligent shopping lists on a mobile device
Pressure relief device for solid propellant motors subjected to high external temperatures
Enriched platelet wound healant