Innershield maximum output setting - no load, Troubleshooting & repair – Lincoln Electric IDEALARC DC 1000 SVM123-A User Manual
Page 83
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F-43
TROUBLESHOOTING & REPAIR
F-43
TYPICAL SCR GATE VOLTAGE WAVEFORM
CONSTANT VOLTAGE INNERSHIELD
MAXIMUM OUTPUT SETTING - NO LOAD
IDEALARC DC-1000
SCOPE SETTINGS
Volts/Div. . . . . . . . . . . . . . 1 V/Div.
Horizontal Sweep . . . . . .5 ms/Div.
Coupling . . . . . . . . . . . . . . . . . DC
Trigger . . . . . . . . . . . . . . . Internal
This is the typical SCR gate pulse volt-
age waveform. The machine was in an
open circuit condition (no load) and
operating properly. Note that each verti-
cal division represents 1 volt and that
each horizontal division represents 5
milliseconds in time.
Note: Scope probes connected at SCR
gate and cathode: (+) probe to gate, (-)
probe to cathode.
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