Power filter
AssigneeFlextronics AP, LLC
InventorsJames Robert Hamstra, John MacAskill, Kieran Miller, Aaron Jungreis, Dan Gorcea
Life of this patent
Estimating the term…
Abstract
Generally, a DC power filter and its associated components are presented herein. The DC power filter may operate in a telecommunications chassis between one or more electrical sources and one or more loads. A common mode noise shunt may be included to shunt noise from more than one of the electrical sources or loads together. Additionally, the DC power filter may include protection circuitry that is coupled to more than one of the electrical sources. The protection circuitry may include a combination of diodes and other transient voltage suppression devices.
Claims25
A circuit in a telecommunications chassis that receives DC power from a plurality of power line pairs and provides power to a plurality of loads within the chassis, the circuit comprising:
- a plurality of branch circuits, each branch circuit being associated with one of the power line pairs and connected to one or more loads within the chassis, each branch circuit including a plurality of capacitors therein to filter out noise;
- and
- a common mode noise shunt that is coupled to each of the plurality of branch circuits, wherein the common mode noise shunt couples together common mode noise from more than one of the branch circuits to provide filtering of the common mode noise.
A circuit in a telecommunications chassis that receives DC power from a plurality of power line pairs and provides power to a plurality of loads within the chassis, the circuit comprising:
- a plurality of branch circuits, each branch circuit being associated with one of the power line pairs and connected to one or more loads within the chassis, each branch circuit including a plurality of capacitors therein to filter out noise;
- and
- a plurality of protection circuits, each protection circuit being coupled to more than one of the branch circuits, wherein the plurality of protection circuits operate to protect the circuit from abnormal power conditions.
A circuit in a telecommunications chassis that receives DC power from a plurality of power line pairs and provides power to a plurality of loads within the chassis, the circuit comprising:
- a plurality of branch circuits, each branch circuit being associated with one of the power line pairs and connected to one or more loads within the chassis, each branch circuit including a plurality of capacitors therein to filter out noise;
- and
- a field effect transistor disposed in series with at least one of the plurality of capacitors.
Dependencies are inferred from the claim text.