Protective circuit for the input-side protection of an electronic device operating in the maximum frequency range
US8625247B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2007 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Mar 1, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2224/48091
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a protective circuit (10) for the input-side protection of an electronic device (30) operating in the maximum frequency range from high-power interfering impulses in the working frequency range of the device (30), said protective circuit (10) between an input (11) and an output (18) comprising a first limiting circuit (12) having at least one gas discharge tube (GDT1, GDT2) for limiting high interference powers and a second limiting circuit (14, 16) disposed behind the first limiting circuit (12), said second limiting circuit having semi-conductor components (D1, . . . , D4) for limiting smaller interference powers. Protection from particularly high interference powers is achieved in that the first limiting circuit (12) comprises two gas discharge tubes (GDT1, GDT2) connected in parallel and preferably identical.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.