Patent ID: 11875825
Assignee: HEADWAY TECHNOLOGIES, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 16:
17. A system comprising:
a main pole including a tip portion disposed adjacent to an air bearing surface (ABS);
a driving coil forming a primary electric current path with a bucking coil for passing a writing current, wherein the main pole is driven to generate a magnetic flux that passes through the tip portion and is used to write one or more magnetic bits in a magnetic medium;
a write shield electrically connected to the tip portion of the main pole;
a trailing loop for a return of the magnetic flux to the main pole, the trailing loop comprising a hot seed (HS) layer, the write shield (WS) on the HS layer, an uppermost (PP3) trailing shield (TS), and a top yoke (TY) on a main pole back portion;
a first insulation layer formed between the TY and PP3 TS to electrically isolate the main pole back portion from the trailing loop; and
at least two writer pads that are in contact with the driving coil and bucking coil and configured to generate a second electric current path, wherein the main pole and the write shield are electrically connected to the at least two writer pads through two series resistors, forming the second electric current path with the writing current passing through the main pole, write shield, and the two series resistors.