Over-voltage protection circuit
US8139334B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 1, 2006 |
| Grant date | Mar 20, 2012 |
| Priority date | — |
| Expiry date | Jan 11, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/202
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention pertains to a closed loop over-voltage protection for audio/video connection interfaces of devices especially of mobile devices. The over-voltage protection circuit for mobile devices comprising at least one connector with at least one electrical contact for connecting external devices and at least one internal contact to a circuitry using said connector, wherein said over-voltage protection circuit comprises: an electrically operated switch connected between an electrical contact of said connector and an internal contact to said circuitry, a control element to operate said electrically operated switch, wherein said control element is connected to said switch to operate said switch, a first voltage determining unit to detect a voltage between said contact of said connector and said electrically operated switch, and which is connected to said control element, and a second voltage determining unit to detect a voltage between said internal contact to said circuitry and said electrically operated switch, and which is connected to said control element wherein said control element is configured to open or close said switch based on the voltages detected at said inte…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.