Standard Waveform

Fig 1: Standard Waveform Chart

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Fig 2: Identifying Voltage Waveform Of Generator "B" Terminal

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NOTE: The voltage waveform of the generator "B" terminal can undulate as shown in Fig 2 . This waveform is produced when the regulator operates according to fluctuations in the generator load (current), and is normal for the generator. If the ripple height is abnormally high (approximately 2 V or more during idling), the wires between the generator "B" terminal and the battery have broken due to fuse blowing, etc. The generator is usually operating properly.

Fig 3: Generator Voltage Waveforms

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.