Patent ID: 6455952
Filing Date: 2002-09-24
Classification: G05F

Abstract:
An adjustment circuit for voltage division having an adjustable voltage-dividing resistor &Dgr;R composed of a serial resistor Rn(n=0, 1, 2 . . . n) mapped symmetrically, connected in series, and paired in parallel with a switch Sn or Snâ€² apiece, wherein the switches Sn and Snâ€² are oppositely operated, namely, if Sn is turned â€œON/OFFâ€ , Snâ€² is turned â€œOFF/ONâ€  to thereby adjust a valid portion of the voltage-dividing resistor &Dgr;R proportionally for obtaining a desired output voltage by controlling the switches Sn and Snâ€²(n=0, 1, 2 . . . n).