Circuit protection arrangement
AssigneeRaychem Corporation
InventorsDavid Crofts, Martin A. Wright
Life of this patent
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Abstract
An arrangement for protecting an electrical circuit from a voltage transient having a fast rise time, e.g. in the order of 20 Vns.sup.-1 comprises a number of semiconductive threshold foldback switching elements preferably formed from a chalcogenide glass, in parallel with one another between the current carrying line of the circuit and earth. An additional, non-linear, circuit protection device is connected in parallel with the switching element between the current carrying line and earth, in order to pass high frequency components of the transient to earth.
Claims17
An arrangement for protecting an electrical circuit from a voltage transient having a fast rise time, which comprises a plurality of semiconductor threshold foldback switching elements that are connected, in parallel with one another between a current carrying line of the circuit and earth, and a capacitor connected in series with each switching element, the capacitor being connected between the switching element and the current carrying line.
An electrical circuit which includes an arrangement for protecting an electrical circuit from a voltage transient having a fast rise time, which comprises a plurality of semiconductor threshold foldback switching elements that are connected, in parallel with one another between a current carrying line of the circuit and earth, and capacitor connected in series with each switching element the capacitor being connected between the switching element and the current carrying line.
An electrical circuit that has an extensive line, the circuit including a circuit protection arrangement which comprises a plurality of semiconductor threshold foldback switching elements that are connected in parallel with one another between the line and earth, and a capacitor connected in series with each switching element.
Dependencies are inferred from the claim text.