Active protection device for low voltage circuits in items...

Details Active protection device for low voltage circuits in items... Active protection device for low voltage circuits in items...

2006-02-14

2006-02-14

Sircus, Brian (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

C361S056000

Reexamination Certificate

active

06999292

ABSTRACT:
The invention establishes a method and a device for supplying external circuit units with an overvoltage (101), present on a high voltage circuit (100), in which connected items of low voltage equipment (116) are protected from damage due to the applied overvoltage (101), a protection device (111) for the protection of the item of low voltage equipment (116) from damage due to the overvoltage (101) present on the high voltage circuit (100) being connected in such a way that the protection device (111) is connected in series between the high voltage circuit (101) [sic] and the item of low voltage equipment (116), and a low voltage (112), which is applied to a low voltage node (110), which is arranged between the protection device (111) and the item of low voltage equipment (116), and which is made available to the item of low voltage equipment (116), being clamped by means of the protection device (111) to a voltage value, which does not exceed a definable voltage value of the protection voltage (113), in such a way that the low voltage circuits (115) contained in the item of low voltage equipment (116) are protected from damage due to overvoltages.

REFERENCES:
patent: 3919601 (1975-11-01), Suko et al.
patent: 4268789 (1981-05-01), Nagano
patent: 4704654 (1987-11-01), Aberle et al.
patent: 5157571 (1992-10-01), Gotz
patent: 6111737 (2000-08-01), Baldwin et al.
patent: 6617906 (2003-09-01), Hastings
patent: 198 33 345 (2000-01-01), None
patent: 199 30 036 (2001-01-01), None
patent: 0 351 756 (1990-01-01), None
“Micropower Voltage Regulator”, Motorola, Inc., 1998, USA, pp 1-7.

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