Electricity: single generator systems – With signals – indicators – recorders – testing – etc.
Patent
1998-12-24
2000-03-07
Ramirez, Nestor
Electricity: single generator systems
With signals, indicators, recorders, testing, etc.
322 20, H02H 706, H02K 1100
Patent
active
060345128
ABSTRACT:
A regulator for a polyphase alternator for a motor vehicle, the regulator including detector means for detecting a voltage difference between the phase terminals of said alternator, which comprise at least one transistor circuit forming a current mirror whose two branches are connected at one end to respective ones of the two phase terminals and are connected at the other end to transistors forming current sources that supply said branches with currents of the same magnitude, those branches also having resistors of different resistances such that one of the transistors becomes non-conductive when a voltage difference in excess of a given threshold appears between the two phase terminals, said transistor becoming non-conductive giving rise to a change in the level of a logic output controlled by the voltage at a point on said branch between the current source transistor and the current mirror transistor.
REFERENCES:
patent: 4061932 (1977-12-01), Cordell
patent: 5285146 (1994-02-01), Pierret et al.
patent: 5357186 (1994-10-01), Pennisi et al.
patent: 5521486 (1996-05-01), Takamoto et al.
patent: 5701089 (1997-12-01), Perkins
French Search Report dated Sep. 2, 1998.
Medley Peter
Ramirez Nestor
Valeo Equipements Electriques Moteur
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