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TROUBLESHOOTING & REPAIR
F-30 F-30
IDEALARC CV-400
This is the typical SCR gate pulse
voltage waveform. The machine was
in an open circuit condition (no load)
and operating properly. Note that
each vertical division represents 2
volts and that each horizontal division
represents 5 milliseconds in time.
Note: Scope probes connected at
SCR gate and cathode: (+) probe to
gate, (-) probe to cathode.
SCOPE SETTINGS
Volts/Div.......................2V/Div.
Horizontal Sweep.....5 ms/Div.
Coupling ............................DC
Trigger .........................Internal
TYPICAL SCR GATE VOLTAGE WAVEFORM
MAXIMUM OUTPUT SETTING – NO LOAD
0 volts
5 ms
2 volts
CH1