Electricity: single generator systems – Automatic control of generator or driving means – Voltage of generator or circuit supplied
Patent
1993-12-29
1994-12-27
Peckman, Kristine L.
Electricity: single generator systems
Automatic control of generator or driving means
Voltage of generator or circuit supplied
322 29, H02P 900
Patent
active
053768760
ABSTRACT:
A phase winding detector (50) is preferably used to detect alternator (11) rotation in an alternator charging system (10). The detector (50) receives a single winding phase output signal (at 39) and utilizes a sampling apparatus (71, 74, 76) to provide a sampled phase output signal (at 75). A comparison circuit (70) provides an output by comparing the phase output signal with the sampled phase output signal, whereby a detection of variation in the phase output signal is provided (at terminals 85, 87 and 51). After initial detection of variation of the phase winding output signal, preferably additional circuitry (77, 79, 83) results in comparing the phase winding signal with a fixed reference threshold (V.sub.ref). Detection of a phase winding output signal is implemented without use of a substantial DC blocking capacitor and is implemented by monitoring only one input signal terminal.
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Patent Abstracts of Japan vol. 013, No. 280 (E-779) 27 Jun. 1989 & JP-A-10 65 926 (NEC IC Microcomput System Ltd) 13 Mar. 1989 Abstract.
Bauser Philippe B.
Edwards Arthur J.
Melamed Phillip H.
Motorola Inc.
Peckman Kristine L.
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