Alternating current voltage regulator using a feedback loop with step filtering
US4786854A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1987 |
| Grant date | Nov 22, 1988 |
| Priority date | — |
| Expiry date | Sep 24, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/44
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An AC voltage regulator includes an output voltage sensing and regulating device having a suitable filter characteristic to attenuate AC components therein occurring in the frequency ranges corresponding to the almost periodic oscillations or abnormal oscillations, or high frequency components of distorted waves which appear in the AC output voltage and are causes for such abnormal oscillations. The AC voltage regulator does not need to use a dummy load to suppress almost periodic oscillations even when the load is extremely small. The output voltage of the AC voltage regulator is free from abnormal oscillation components such as almost periodic oscillations and low frequency oscillations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.