Troubleshooting & repair, Typical scr gate voltage waveform – Lincoln Electric IDEALARC CV-300 User Manual
Page 66
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F-27
TROUBLESHOOTING & REPAIR
F-27
IDEALARC CV-300
2ms
1V
0 Volts
CH1
This is the typical SCR gate pulse voltage
waveform. The machine was in an open cir-
cuit condition (no load) and operating prop-
erly. Note that each vertical division repre-
sents 1 volt and that each horizontal division
represents 2 milliseconds in time.
Note: Scope probes connected at SCR gate
and cathode: (+) probe to gate, (-) probe to
cathode.
Volts/Div . . . . . . . . . . . . . . . . . .1 V/Div.
Horizontal Sweep . . . . . . . . . .2 ms/Div.
Coupling . . . . . . . . . . . . . . . . . . . . .DC.
Trigger . . . . . . . . . . . . . . . . . . .Internal.
SCOPE SETTINGS
TYPICAL SCR GATE VOLTAGE WAVEFORM
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