Lincoln Electric SVM125-A Normal Open Circuit Voltage Waveform 115VAC Supply, Scope Settings

Models: SVM125-A

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F-28

F-28

TROUBLESHOOTING & REPAIR

NORMAL OPEN CIRCUIT VOLTAGE WAVEFORM (115VAC SUPPLY)

HIGH IDLE – NO LOAD – FINE CURRENT CONTROL RHEOSTAT AT MAXIMUM

16.6 ms

 

 

CH1

 

0 volts

50 volts

5 ms

This is the typical auxiliary output voltage generated from a properly operating machine. Note that each vertical division represents 50 volts and that each horizontal division rep- resents 5 milliseconds in time.

Note: Scope probes connected at machine 115VAC receptacle.

SCOPE SETTINGS

Volts/Div

50V/Div.

Horizontal Sweep

5 ms/Div.

Coupling

DC

Trigger

Internal

 

 

CLASSIC II

Page 78
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Lincoln Electric SVM125-A service manual Normal Open Circuit Voltage Waveform 115VAC Supply, Scope Settings