Transient blocking unit using normally-off device to detect current trip threshold
US8223467B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 27, 2009 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | Oct 9, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An isolation device having normally off detection is provided. The isolation device having normally off detection includes a transient blocking unit (TBU) having at least one depletion mode device disposed between a pair of sense terminals, and at least one normally off transition element disposed to drive a gate of the depletion mode device in the TBU, where the normally off transition element transitions from a first resistive state to a second resistive state and one depletion mode device is connected to one sense terminal, and the normally off transition element transitions by detection of a current through the TBU. The TBU can be unidirectional or bidirectional.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.