High-frequency current source for an active EMI filter, active EMI filter and use of an active EMI filter
US12081117B2 · kind B2 · utility
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2References
8Claims
0Family size
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Key dates
| Filing date | Feb 11, 2022 |
| Grant date | Sep 3, 2024 |
| Priority date | — |
| Expiry date | Mar 1, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/15
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high-frequency current source with a symmetric bipolar output stage piloted by an active bias network with an extended temperature range. The source is configured to provide a high impedance at 1 MHz and above. The invention includes such active EMI filters with such a high-frequency current source, for example in the current-sense current-inject feedback configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.