Patent ID: 6911896

Claim:
A resistor string comprising: a first matrix of N resistors connected in series; a second matrix of M resistors connected in series; a first lead connected to a first end of the first matrix and to a first end of the second matrix; a second lead connected to a second end of the first matrix and to a second end of the second matrix; each matrix comprises a matrix having an even number of rows and a plurality of columns of resistors, the resistors in each matrix being electrically connected in an order, any two successively connected rows of resistors in a matrix having resistors that are ordered in opposite directions across the matrix when traced from the first lead to the second lead, the first and second matrices having the same number of rows of resistors, the rows of the first and second matrices being physically interleaved; for each matrix, given a physical order of rows of 1 , 2 , . . . N, the first half and the second half of the electrical order of physical rows alternates between rows above and rows below the physical middle of the matrix; a plurality of nodes between resistors in the first matrix being connected, each to a nominally equipotential node between resistors in the second matrix.