Unique method of reducing losses in circuits using V2 PWM control
US6456510B1 · kind B1 · utility
9Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2000 |
| Grant date | Sep 24, 2002 |
| Priority date | — |
| Expiry date | Aug 31, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/33507
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A regulated power supply in which square wave output of a switching rectifier is applied to a filter comprises a series inductor and a parallel capacitor. This filter lacks a series resistor. The ramp signal is developed across a second capacitor in series with a first resistor, and in parallel with the rectifier output. An amplifier adds the ramp signal to a signal representing the error in the DC output voltage of the power supply, producing an output that is fed to a control circuit. The control circuit in response generates a voltage control signal that controls the switching of the rectifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.