Resources Contact Us Home
Automatic gain controlled amplifier apparatus

Image Number 5 for United States Patent #4016557.

In an analog data acquisition system, used for digital treatment, analog signals of different levels received from remote locations are amplified with a selected gain before being converted by a common A/D converter. A discretely variable gain amplifier is used in which a series of programmed predetermined ranges are sequentially tested against the capability of the A/D converter in relation to the particular input analog signal. The first acceptable gain is selected and a code can be used to identify the selected gain for digital treatment of the derived corresponding digital signal.

  Recently Added Patents
Computerized on-board system for controlling a train
Probe for ultrasound diagnostic apparatus
Methods and compositions for wound healing
Authenticating messages sent between a vehicle and a central facility
Architectural panel with bamboo rings heavy density embossed surface
Lamp body with integrally molded heat sink
Polyolefin and composition for pipe systems and sheets
  Randomly Featured Patents
End-to-end fibre channel over ethernet
Work piece butt position detecting method for butt welding
Method and device for controlling and/or regulating the slip of a clutch
Transcoder system for adaptively reducing frame-rate
Infrared detector packaged with improved antireflection element
Radiant stove heater
Heat transfer plates evaporation and condensation apparatus
Support stand system for automobile parts
Magnetic lighter
Hydrophilic synthetic resins, esterified for stability to hydrolysis, which are particularly suitable for aqueous systems