Car alternator electric power generator protected against transi

Details Car alternator electric power generator protected against transi Car alternator electric power generator protected against transi

1981-10-30

1984-06-19

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Voltage regulator protective circuits

361 56, 361 91, 361111, 361 21, 322 28, 322 68, H02H 720

Patent

active

044555857

ABSTRACT:
An electric power generator which includes a component, for example, a Zener diode, connected in series with the usual return diode which is connected in parallel to the excitation winding of the alternator. The Zener diode makes it possible to set the discharging voltage due to the energy stored in the magnetic field associated with the inductance of the excitation winding at a relatively high level during high-voltage transients caused by the accidental disconnection of the wire connecting the alternator to a load or a terminal of the motor vehicle battery while it is in the charging stage. The result is a more rapid dissipation of the energy stored in the excitation circuit, and therefore results in an output transient having a reduced energy content. Thus, it is possible to construct a voltage regulator and such other devices as may be powered by the alternator in the form of low-voltage integrated circuits.

REFERENCES:
patent: 3713016 (1973-01-01), Lehnhoff
patent: 4155107 (1979-05-01), Osborne et al.
patent: 4156172 (1979-05-01), Hucker et al.
patent: 4280161 (1981-07-01), Kuhn et al.
"Electricity in Cars", R. H. Bacon, Philips Technical Library, 1967.

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