Method and switch for automatically cutting off high temperature and high current by using metal-insulator transition (MIT) device
US9997901B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 2014 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | Oct 11, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H7/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of automatically cutting off high temperature and high current, includes calculating an FET voltage applied to an FET (Field Effect Transistor), based on a resistance of a CTS (Critical Temperature Switch) and a reference resistance, comparing the FET voltage with a predetermined threshold voltage, and setting the FET to an ON state when the FET voltage is higher than the threshold voltage and setting the FET to an OFF state when the FET voltage is lower than the threshold voltage. The CTS is a switch including an MIT (Metal-Insulator Transition) device. The MIT device has a metallic property only in a predetermined temperature range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.