Electricity: single generator systems – Automatic control of generator or driving means – Voltage of generator or circuit supplied
Reexamination Certificate
2006-03-07
2006-03-07
Patel, Rajnikant B. (Department: 2838)
Electricity: single generator systems
Automatic control of generator or driving means
Voltage of generator or circuit supplied
C322S099000, C320S123000
Reexamination Certificate
active
07009366
ABSTRACT:
A voltage regulator for an automotive alternator includes a switching transistor that controls an amount of field current supplied to a field coil of the alternator. The switching transistor is controlled in an ON-OFF fashion, and output voltage of the alternator is always monitored by a detector circuit that detects disconnection in a circuit for charging an on-board battery with the output voltage. It is determined that the disconnection occurred when a difference between the output voltage at a time when the switching transistor is turned off and the output voltage at a time when the switching transistor is turned on exceeds a predetermined value.
REFERENCES:
patent: 5151646 (1992-09-01), Vercesi et al.
patent: A 56-150935 (1981-11-01), None
Denso Corporation
Oliff & Berridg,e PLC
Patel Rajnikant B.
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