Abnormal Waveforms

Example 1
PROBABLE CAUSE: Open circuit in diode

Fig 1: Abnormal Waveform (Open Circuit In Diode)
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Example 2
PROBABLE CAUSE: Short-circuit in diode

Fig 2: Abnormal Waveform (Short-Circuit In Diode)
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Example 3
PROBABLE CAUSE: Open circuit in stator coil

Fig 3: Abnormal Waveform (Open Circuit In Stator Coil)
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Example 4
PROBABLE CAUSE: Short-circuit in stator coil

Fig 4: Abnormal Waveform (Short-Circuit In Stator Coil)
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.