Method and apparatus for protecting monitor circuit from...

Details Method and apparatus for protecting monitor circuit from... Method and apparatus for protecting monitor circuit from...

2006-05-23

2006-05-23

Sircus, Brian (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Circuit interruption by thermal sensing

C361S103000

Reexamination Certificate

active

07050283

ABSTRACT:
A method and apparatus for improving the fault protection of a monitor circuit is provided by coupling an input protection circuit to an output section. The input protection circuit may include a fusible device that limits or removes a fault condition present at an input to the input protection circuit. The fusible device may be, for example, a resettable positive temperature coefficient (“PTC”) device configured to limit the current passing through it to a predetermined level once it reaches a predetermined temperature. A resistive element may be thermally coupled to the PTC device to assist in reaching the predetermined temperature. The monitor circuit may further be configured to generate a sensory signal in response to a fault condition.

REFERENCES:
patent: 4546305 (1985-10-01), Goddijn et al.
patent: H248 (1987-04-01), Middlebrooks
patent: 4700130 (1987-10-01), Bloemen
patent: 4967176 (1990-10-01), Horsma et al.
patent: 5072327 (1991-12-01), Knollman et al.
patent: 5245879 (1993-09-01), McKeon
patent: 5612847 (1997-03-01), Malecke et al.
patent: 5629658 (1997-05-01), Chen
patent: 5745322 (1998-04-01), Duffy et al.
patent: 5864280 (1999-01-01), Hall
patent: 5976720 (1999-11-01), St. Jean et al.
patent: 6307758 (2001-10-01), Geren
patent: 6331763 (2001-12-01), Thomas et al.
patent: 6518731 (2003-02-01), Thomas et al.
patent: 229 261 (1985-10-01), None
patent: 298 08 365 (1998-09-01), None
patent: 10-023660 (1998-01-01), None
patent: WO 99/40663 (1999-08-01), None
Secutron Fire Alarm Systems: “Modul R” MR-2605, 5 Zone Conventional Fire Alarm Control Unit, Release 1.1, Canada XP002248087, www.secutron.ca, Oct. 18, 2000.
PCT International Search Report dated Jul. 17, 2003.

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