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
Lightning-protective explosion-preventive fastener
Coupling device having piercing member
Transporting business intelligence objects between business intelligence systems
Rose plant named `ESM R057`
Horse stationary tab
Fail-safe upgrading of portable electronic device software
Water bottle warning triangle
  Randomly Featured Patents
Animal field dressing hanger
Multi harmonic tire uniformity correction
Method of restarting operations for manufacturing filaments of a thermoplastic material after an accident of the breaking
Bidirectional interface for interconnecting two devices and the interface having first optical isolator and second optical isolator being powered by first and second device ports
Doping method for semiconductor device
Edge preserving and tone correcting image processing apparatus and method
Image forming method and image forming apparatus for same
Small incision intraocular lens with anti-PCO feature
Laser scanning graphic input system
Top sizer