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
Nuclear fuel assembly bottom nozzle
Discharge lamp lighting circuit
Para-xylylene based microfilm elution devices
Post-processing including median filtering of noise suppression gains
Program recording medium, image processing apparatus, imaging apparatus, and image processing method
Verbena plant named `Duempsopicha`
Systems and methods for facilitating communication with foundation fieldbus linking devices
  Randomly Featured Patents
Scan exposure apparatus and method, and device manufacturing method
Silkscreen printer machine and apparatus
High sensitivity detection of peroxidase activity
Process for manufacturing an elongated electroluminescent light strip
Reactivity control of nuclear fuel pellets by volumetric redistribution of fissile, fertile and burnable poison material
Analog to digital converter calibration via synchronous demodulation
Device for rapid connecting-up of pressurized containers in drinks dispenser plants
Process for depositing by winding on a support several rovings simultaneously of pre-impregnated fibers, device for practicing the same, and structure of a composite material thus obtained
Azahydroxybenzotriazoles and derivatives thereof for peptide coupling reactions
Selectable feedback control system