Resources Contact Us Home
Digital-to-analog converter biasing control circuit

Image Number 3 for United States Patent #4631518.

A device for controlling the output voltage range of a digital-to-analog (D/A) converter of the type wherein the converter output voltage range is proportional to the magnitude of an applied bias current. The device comprises means to sample and store a selected converter output voltage, means to produce a variable current of magnitude proportional to the stored converter output voltage, and a source of constant current. The constant current and the variable current are summed and applied to the converter as the bias current. The converter output voltage range is dependent on the variable portion of the applied bias current which is in turn dependent on the stored, selected converter output voltage.

  Recently Added Patents
Digital fine delay processing
Multi-layer, microporous polyolefin membrane, its production method, battery separator and battery
Color variation control process for molding plastic and composite multi-color articles
Trash receptacle
Light powered hearing aid
Area efficient through-hole connections
  Randomly Featured Patents
Systems and methods for suppressing radio interference from a noise source via active filtering
Method, system and program products for modifying coupling facility structures
Deep draw packing method and film with small shrinkability for deep draw packing
Vitra-violet process for producing flame resistant polyamides and products produced thereby
Di-2,4,4'-trimethylpentylphosphinic acid and its preparation
Battery having a sheet current collector fluid-tightly separating basic cells
Vehicle power transmission device
Apparatus and method for generating per stream effective signal to noise ratio in a multiple-input multiple-output wireless communication system
User interface for controlling three-dimensional animation of an object
Method and system for identifying a relay mobile station in a wireless communication network