drozone
Industrial
- Dec 18, 2002
- 6
i know that the amperage changes with the wire feed speed and also during the weld by the size of the gap. the question is how does it know that the gap is different? the output is controlled by changing the pulse rate of the scr's but is this controlling the voltage or the amperage or both? in otherwords, what is the parameter that the voltage control board and the wire feeder board are sensing to know to change the amp output?