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TROUBLESHOOTING & REPAIR
NORMAL OPEN CIRCUIT VOLTAGE WAVEFORM
CONSTANT VOLTAGE MIG
MINIMUM OUTPUT SETTING – NO LOAD
0 volts
20 volts | 2 ms |
This is the typical DC open circuit voltage waveform generated from a properly operating machine. Note that each vertical division represents 20 volts and that each horizontal divi- sion represents 2 milliseconds in time.
Note: Scope probes connected at
machine output terminals: (+) probe to positive terminal,
SCOPE SETTINGS
Volts/Div | 20V/Div. |
Horizontal Sweep | 2 ms/Div. |
Coupling | DC |
Trigger | Internal |
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