Integrated telephony subscriber line protection and filter device
AssigneeOccam Networks
InventorMark Rumer
Life of this patent
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Abstract
A protection device includes a substrate capable of suppressing electromagnetic fields, with a channel formed therein, a current dependent circuit interrupter disposed inside the channel, and voltage management circuitry coupled to the substrate. The voltage management circuitry is electrically coupled to the current dependent circuit interrupter so as to form a crowbar circuit in the presence of overvoltage or undervoltage conditions as determined according to a reference voltage.
Claims15
An apparatus comprising:
- a substrate capable of suppressing electromagnetic fields and having a channel formed therein;
- a current dependent circuit interrupter disposed inside the channel;
- and
- voltage management circuitry coupled to the substrate and electrically coupled to the current dependent circuit interrupter so as to form a crowbar circuit in the presence of overvoltage conditions as determined according to a reference voltage.
A device for protecting telephone subscriber line interfaces, each telephone line having a “Tip” connection and a “Ring” connection, the device comprising:
- a substrate capable of suppressing electromagnetic fields, the substrate having multiple channels formed therein;
- a current dependent circuit interrupter disposed inside each of the channels;
- a “Tip” wire interface connected to one of the current dependent circuit interrupters;
- a “Ring” wire interface connected to another of the current dependent circuit interrupters;
- and
- an overvoltage assembly, comprising a symmetrical thyristor arrangement, disposed on an outer portion of the substrate and electrically coupled to the “Tip” and “Ring” wire interfaces.
Dependencies are inferred from the claim text.