Thyristor circuit providing overcurrent protection to a low impedance load
US6862162B2 · kind B2 · utility
5Cited by
28References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 23, 2003 |
| Grant date | Mar 1, 2005 |
| Priority date | — |
| Expiry date | May 15, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D18/80
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A thyristor provides overcurrent protection to a low impedance load, such as a transformer, by adding a resistance in series with the transformer winding. As overcurrents attempt to pass through the transformer winding, a sufficient voltage is generated in the transformer so that a thyristor connected thereacross is triggered into conduction. A resistance formed between the thyristor gate and cathode establishes the threshold of current that can pass through the transformer winding before the thyristor is triggered. When triggered into conduction, the thyristor shunts the current and the transformer is thus protected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.