Title: A circuit for protecting an electronic exchange against overloads

Abstract: The invention relates to methods for protecting exchanges against overloads. It comprises introducing into an exchange elements which detect increases in temperature and supply numerical signals. The central control unit of the exchange receives these signals and formulates procedures for counteracting the overloads.

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Inventors: Le Cardonnel, Gerard (Paris, FR)

Application Number: 685389
Filing Date: 1976-05-11
Publication_date: 1980-05-06
Assignee: Thomson-CSF (Paris, FR)
Primary Class(es): 361/103 327/512, 370/217, 370/244, 379/2, 379/331, 379/412
Other Classes:
US Patent Ref:

2912557	Nov, 1959	Michaelis	317/132.
2976368	Mar, 1961	Gray	361/165.
3042837	Jul, 1962	Alley et al.	317/132.
3083319	Mar, 1963	Tiemann	317/41.
3181364	May, 1965	Barton	340/227.
3182201	May, 1965	Sklar	317/132.
3321641	May, 1967	Howell	361/165.
3379939	Apr, 1968	Obenhaus	361/165.
3703651	Nov, 1972	Blowers	307/310.
3835458	Sep, 1974	Mrazek	307/310.
3863033	Jan, 1975	Chen et al.	179/15.
3914559	Oct, 1975	Knollman	179/15.
3916263	Oct, 1975	Abbott	317/40.
3927571	Dec, 1975	Athey	340/228.

Other Refs: 7494421302235

May, 1956	GB.
Jan, 1973	GB.

Primary Examiner: Salce, Patrick R.
Assistant Examiner:
Attorney: Cushman, Darby & Cushman