Lincoln Electric CLASSIC I SVM134-A - Manual (Page 75)

TROUBLESHOOTING & REPAIR
F-31 F-31
CLASSIC I
This is the typical DC welding output
voltage generated from a properly
operating machine. Note that each
vertical division represents 20 volts
and that each horizontal division
represents 5 milliseconds in time.
The machine was loaded with a
resistance grid bank.
Note: Scope probes connected at
machine output terminals.
SCOPE SETTINGS
Volts/Div .....................20V/Div.
Horizontal Sweep .....5 ms/Div.
Coupling.............................DC
Trigger .........................Internal
TYPICAL DC WELD VOLTAGE WAVEFORM
MACHINE LOADED – SELECTOR SWITCH AT MAXIMUM
MACHINE LOADED TO 200 AMPS AT 40VDC
0 volts
5 ms 20 volts
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