Patent ID: 7075288
Filing Date: 2006-07-11
Classification: G01R

Abstract:
1. A method for acquiring a voltage suitable for measuring voltage over a wide input range, comprising the steps of: providing a non-active current transformer, said transformer comprising a primary winding and a secondary winding, each of said windings having first and second connection terminals; providing first and second electrical resistors, said resistors each having first and second connection terminals; connecting a first terminal of said first electrical resistor to a first terminal of said primary winding of said current transformer; connecting said first and second connection terminals of said second resistor to said first and second connection terminals, respectively, of said secondary winding of said current transformer; and applying a voltage to be measured across said second connection terminal of said first resistor and said second connection terminal of said primary winding; and wherein the step of providing a non-active current transformer further comprises providing a core material thereof selected from the group consisting of crystalline NiFe, nanocrystalline materials, and amorphous materials; and wherein said method further comprises the steps of providing an analog to digital converter having first and second input terminals; and