Troubleshooting & repair, Typical scr gate voltage waveform, 2ms 1v 0 volts ch1 – Lincoln Electric IDEALARC CV-305 User Manual
Page 66
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TROUBLESHOOTING & REPAIR
F-34
F-34
IDEALARC® CV-305
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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