Circuit protection arrangement
US4799125A · kind A · utility
6Cited by
10References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1987 |
| Grant date | Jan 17, 1989 |
| Priority date | — |
| Expiry date | Sep 3, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H9/048
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An arrangement for protecting an electrical circuit from a voltage transient having a fast rise time, e.g. in the order of 20 Vns.sup.-1 comprises a number of semiconductive threshold foldback switching elements, preferably formed from a chalcogenide glass, in parallel with one another between a current carrying line of the circuit and earth. One or more capacitors are connected in series with the switching elements between the current carrying line and earth in order to prevent any direct currents in the current carrying line holding the switching elements in their low resistance state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.