Patent ID: 6081436
Filing Date: 2000-06-27
Classification: G01R,H02M

Abstract:
A voltage sensing method for sensing the output voltage of each stage of a multiple-output power supply having multiple loads connected to a common ground, a reference voltage Vr and two output stages, said output stages comprising a voltage output having a voltage node, an output side on one side of said voltage node and a ground side on the other side of said voltage node, and preset resistances R1 and R2 determined by the output voltage, wherein R1 represents the resistance on the output side and R2 represents the resistance on the ground side, comprising:a) adding a resistance between each load and the common ground;b) measuring the voltage across each load; andc) canceling output voltage shift by selecting the amount of resistance to be added to each output stage according to the equation:Rs=R2*Vp/Vrwherein Vp=potential voltage between low voltage outputs of output stages.