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TROUBLESHOOTING & REPAIR |
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TYPICAL SCR GATE VOLTAGE WAVEFORM
CAUTION
HIGH VOLTAGE / HIGH FREQUENCY can damage test equipment.
•Perform all voltage and waveform checks with high frequency circuit OFF.
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CH1
0 volts
2 volts | 5ms |
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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,
SCOPE SETTINGS
Volts/Div | 2 V/Div. |
Horizontal Sweep | 5 ms/Div. |
Coupling | DC |
Trigger | Internal |
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