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TROUBLESHOOTING & REPAIR
TYPICAL DC WELD OUTPUT VOLTAGE WAVEFORM
MACHINE LOADED – SELECTOR SWITCH AT MAXIMUM POSITION
CH1
0 volts
20 volts | 5 ms |
MACHINE LOADED TO 250 AMPS AT 40 VDC
This is the typical DC output voltage generated from a properly operating machine. Note that each vertical divi- sion 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 |
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