Troubleshooting and repair – Lincoln Electric BULLDOG SVM208-A User Manual
Page 77
This is the typical AC output voltage
generated from a properly operating
machine. Note that each vertical divi-
sion represents 50 volts and that
each horizontal division represents 5
milliseconds in time.
Note: Scope probes connected at
machine 115 VAC receptacle.
SCOPE SETTINGS
Volts/Div.....................50V/Div.
Horizontal Sweep .....5 ms/Div.
Coupling.............................DC
Trigger.........................Internal
NORMAL OPEN CIRCUIT VOLTAGE WAVEFORM (115VAC SUPPLY)
HIGH IDLE – NO LOAD
0 volts
1 Period = 16.2 ms @ 3700 rpm
5ms
20 volts
CH1
TROUBLESHOOTING AND REPAIR
F-29
F-29
BULLDOG® 140