Active circuit filter for reducing conducted radiation from a load back to its power supply
US5408193A · kind A · utility
26Cited by
4References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 3, 1993 |
| Grant date | Apr 18, 1995 |
| Priority date | — |
| Expiry date | Sep 3, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/565
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An embodiment of the present invention comprises a series pass transistor with its emitter arranged to receive a source of DC power, its collector arranged to supply a DC load, and its base connected to the junction of a capacitor to ground and an inductor to the collector. An output capacitor from the collector to ground is alternatively included. In a second embodiment of the present invention, an operational amplifier is inserted in the base circuit to increase the effective circuit gain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.