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
Method and apparatus for distributing promotional materials
Secure mobile ad hoc network
Safety device and method for electric heating appliances
Methods and systems for motion estimation with nonlinear motion-field smoothing
Compositions and processes for forming photovoltaic devices
Bi-directional pattern dependent noise prediction
Crystalline form of zofenopril calcium
  Randomly Featured Patents
Apparatus and method for automatically adjusting parameters of an automatic equalizer
Liquid crystal display, driving apparatus, digital-analog converter and output voltage amplifier thereof
Connection arrangement and method of forming the same
RF-shielded hybrid circuit
Particle movement amount controller for fluidized beds
Apparatus and method for testing an ignition coil and spark plug
Information processor
Thermodynamic systems operating with near-isothermal compression and expansion cycles
Can cutting apparatus and method
Circuit for operating an electric motor