Welding Pulse Monitor

[chy_farm]

Showing an oscilloscope view of an analogue wave form consists of 12.5% (this percentage is called "duty ratio") pulses when i did a DC welding with the pulse switch ON, to a sample steel sheet.
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The pulses come downward to reach nearly -8.1V in this view, but we have to calculate the real amperage by making it 10 times, and replace the unit form volt to ampere, so this means the peak welding amperage is minus 81 amperes.