Low-leakage EMC filter
US7659797B2 · kind B2 · utility
9Cited by
3References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 6, 2009 |
| Grant date | Feb 9, 2010 |
| Priority date | — |
| Expiry date | Jan 6, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/427
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
EMC filter, connectable between a supply network and an electric operated appliance to reduce conduction noise between said supply network and said appliance, comprising one voltage regulator having an output terminal whose potential is kept close to the earth potential, in order to reduce the voltage drop, at mains frequency, across a “Y” capacitor or an active shunt module. In this way the leakage current to earth is sensibly reduced. The device of the invention is especially useful in corner-earthed three-phase lines or in conjunction with RCD devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.