Claims
- 1. An apparatus for feeding wire at a controllable wire feed speed to a weld comprising:a wire feed motor, having a wire feed speed; a controller, coupled to the wire feed motor; and a selectable wire feed speed input; wherein the controller includes an input circuit coupled to the selectable wire feed speed input, and wherein the input circuit includes a non-linear stage such that the relationship between the selectable wire feed speed input and the wire feed speed is not linear.
- 2. The apparatus of claim 1 wherein the selectable wire feed speed input includes a potentiometer mounted on a front panel.
- 3. The apparatus of claim 2 where the input circuit includes a plurality of gain stages each having gain over one of a plurality of input ranges.
- 4. The apparatus of claim 2 wherein the non-linear stage includes a gain stage having a varying gain.
- 5. The apparatus of claim 1 wherein the controller directly controls wire feed speed.
Parent Case Info
This new application is a continuation of, and claims the benefit of the filing date of, U.S. patent application Ser. No. 09/415,878, filed Oct. 8, 1999, entitled Wire Feeder With Non-Linear Speed Control, which issued as U.S. Pat. No. 6,262,391, which is a continuation of, and claims the benefit of the filing date of, U.S. patent application Ser. No. 08/911,998, filed Aug. 15, 1997, entitled Wire Feeder With Non-Linear Speed Control, which issued as U.S. Pat. No. 5,990,447.
US Referenced Citations (9)
Continuations (2)
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Number |
Date |
Country |
Parent |
09/415878 |
Oct 1999 |
US |
Child |
09/788880 |
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US |
Parent |
08/911998 |
Aug 1997 |
US |
Child |
09/415878 |
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US |