Load current sensing technique
US7489489B2 · kind B2 · utility
3Cited by
4References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 11, 2004 |
| Grant date | Feb 10, 2009 |
| Priority date | — |
| Expiry date | Jul 10, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/0822
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus regulate the output of a switching device to a voltage near that of saturation. In the preferred embodiment, this is accomplished for a small period of time during activation before and/or after device saturation. The switching device drive requirement is then measured to attain the regulated voltage. Measurement of the drive requirement during the small period of time correlates to switching driver current, being reliant on the finite gain of the switching device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.