Patent ID: 6166350
Filing Date: 2000-12-26
Classification: B23K

Abstract:
A wire feeder comprising:a wire feed motor, wherein the wire feed motor operates at a wire feed speed; anda controller coupled to the motor, wherein the controller has an input circuit and an intermediate control signal;wherein the input circuit includes a user selectable wire feed speed input such that the intermediate control signal is responsive to the user selectable wire feed speed input;wherein the intermediate control signal has a first response relative to the user selectable wire feed speed input, the wire feed speed has a second response relative to the intermediate control signal that is an undesired nonlinear second response over a range, and the wire feed speed has an overall response relative to the user selectable wire feed speed input; andwherein the input circuit includes a nonlinear stage resulting in the first response being nonlinear over the range that corrects the undesired nonlinear second response over the range, to produce a desired overall response over the range.