Method and apparatus for sensing a current for varying impedance loads
US8143944B2 · kind B2 · utility
3Cited by
12References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2010 |
| Grant date | Mar 27, 2012 |
| Priority date | — |
| Expiry date | Sep 15, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/2173
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Recently, there has been an increased desire to measure load currents of class-D amplifiers to improve performance. The traditional solution has been to include one or more discrete components in series with the load, but this degrades performance. Here, however, circuit is provided (which includes sample-and-hold circuit) that accurately measures load currents without inhibiting performance and that is not inhibited by the phase differences between the load voltage and load current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.