AC signal producer and method thereof
US7863879B2 · kind B2 · utility
0Cited by
7References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 14, 2008 |
| Grant date | Jan 4, 2011 |
| Priority date | — |
| Expiry date | Feb 18, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/538
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An AC signal producer comprises a controlling unit, a Class-D switch circuit, and a low-pass filter. The control unit receives a DC signal and produces a PWM control signal via checking reference tables. The Class-D switch circuit receives the PWM control signal and outputs a square-wave signal. The low-pass filter converts the square-wave signal into the AC signal. Thereby, disadvantages associated with the utilization of an oscillator and a transformer to convert the DC signal to an AC signal could be solved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.