High efficiency MOSFET sine wave generator
US4649467A · kind A · utility
23Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1985 |
| Grant date | Mar 10, 1987 |
| Priority date | — |
| Expiry date | Jul 31, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/53803
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high efficiency MOSFET sine wave generator is provided using the class D pulse width modulation principle. A triangle wave at f.sub.0 is compared to a variable amplitude sinusoid at about 1/10 f.sub.0 to provide a pulse width modulated signal for driving a pair of power MOSFETS connected for switching a B+ and a B- power supply. The power switch output is LC filtered and fedback for regulating the amplitude of the modulating sinusoid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.