Integrated telephony subscriber line protection and filter device
US6606231B2 · kind B2 · utility
6Cited by
5References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 24, 2001 |
| Grant date | Aug 12, 2003 |
| Priority date | — |
| Expiry date | Oct 24, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/18
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.