Patent ID: 6944937

Claim:
A method of making a read head assembly comprising the steps of: making a read head including the steps of: forming a read sensor; forming first and second lead layers with the first and second lead layers connected to the read sensor; forming nonmagnetic insulative first and second read gap layers with the read sensor and the first and second lead layers located between the first and second read gap layers; forming ferromagnetic first and second shield layers with the first and second read gap layers located between the first and second shield layers and the first read gap layer having a resistance R G1 between the first shield layer and one of the first and second lead layers and the second read gap having resistance R G2 between the second shield layer and said one of the first and second lead layers; forming a connection via a plurality of resistors between a first node and each of the first and second shield layers wherein the plurality of resistors includes at least first and second resistors R S1 and R S2 the first node is connected to said one of the first and second lead layers and a second node is located between the first and second resistors R S1 and R S2 and connecting first and second inputs of an operational amplifier to the first and second nodes respectively so as to be across the first resistor R S1 and connecting an output of the operational amplifier to the second node for maintaining the first and second nodes at a common voltage potential.