Track circuit surge protection
US11643119B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 21, 2019 |
| Grant date | May 9, 2023 |
| Priority date | — |
| Expiry date | Feb 7, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H9/043
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A surge suppression circuit for a track circuit is provided. The surge suppression circuit comprises a first surge protection device including a first pair of silicon avalanche diodes and a second surge protection device including a second pair of silicon avalanche diodes. The first surge protection device is connected on a first connection line between a first terminal of a railroad signaling electronic equipment to be protected from a surge and a first terminal of a first rail of two physical rails. The second surge protection device is connected on a second connection line between a second terminal of the railroad signaling electronic equipment and a second terminal of a second rail of the two physical rails. The first surge protection device and the second surge protection device are connected to an earth ground terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.