Electricity: electrical systems and devices – Safety and protection of systems and devices – Load shunting by fault responsive means
Patent
1995-05-16
1996-04-30
DeBoer, Todd
Electricity: electrical systems and devices
Safety and protection of systems and devices
Load shunting by fault responsive means
361113, 361119, H02H 904
Patent
active
055130593
ABSTRACT:
An arrangement for protecting an electrical circuit such as a telephone circuit from a voltage transient comprises a voltage clamp or foldback device (3) arranged to be connected between a current-carrying line (1) and ground (1'), a capacitor (2) in series with it, and an inductance (4) series connected in the line. During normal operation the arrangement acts as an LC filter whose high frequency break-point is determined by the capacitance of the voltage clamp or foldback device (3) and the value of the inductance (4) which are chosen to give a break point of 1 kHz to 10 MHz. However, when the arrangement is subjected to a voltage transient, the voltage clamp or foldback device (3) fires causing the break-point to fall to a value determined by the values of the capacitor (2) and inductance (4). The arrangement may be used, for example, to protect the circuit against a rapid voltage drop caused by the firing of another circuit protection device such as a gas discharge tube 5.
REFERENCES:
patent: 3824431 (1974-07-01), Schlicke
patent: 4021760 (1977-05-01), Campi
patent: 4095163 (1978-06-01), Montague
patent: 4156838 (1979-05-01), Montague
patent: 4238812 (1980-12-01), Middleman et al.
patent: 4329726 (1982-05-01), Middleman et al.
patent: 4434396 (1984-02-01), Montague
patent: 4586104 (1986-04-01), Standler
patent: 4630163 (1986-12-01), Cooper et al.
patent: 4887180 (1989-12-01), Climent et al.
patent: 4941063 (1990-07-01), McCartney
patent: 5416663 (1995-05-01), Atkins
Bertram Bruce M.
Burkard Herbert G.
DeBoer Todd
Gerstner Marguerite E.
Raychem Limited
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