Protection circuit
US4408248A · kind A · utility
28Cited by
7References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1981 |
| Grant date | Oct 4, 1983 |
| Priority date | — |
| Expiry date | Dec 30, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H9/041
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A protection circuit for communication equipment connected to a two conductor communication line includes a bridge rectifier having alternating current terminals connected to the conductors and to ground. The direct current terminals of the rectifier are connected to a device responsive to a range of predetermined voltage and current conditions in the conductors for reflecting foreign electrical energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.