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US 2006/0139832 A1Published application
Common mode surge protection filter
AssigneeHewlett-Packard Development Company, L.P.
InventorsKirk Yates, Andrew Cherniski, Kenneth Viloria
Life of this patent
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Abstract
A filter circuit in a surge protection device comprises a Y-capacitor, a first metal oxide varistor (MOV) coupled between a first line and the Y-capacitor, and a second metal oxide varistor (MOV) coupled between a second line and the Y-capacitor.
Claims19
A common mode surge protection filter circuit comprising:
- an RC circuit comprising a bulk Y capacitor and a resistor coupled in parallel, the RC circuit coupled to ground;
- a first metal oxide varistor (MOV) coupled between a first line and the RC circuit;
- and
- a second metal oxide varistor (MOV) coupled between a second line and the RC circuit.
1 more element
A filter circuit comprising:
- a Y-capacitor;
- a first metal oxide varistor (MOV) coupled between a first line and the Y-capacitor;
- and
- a second metal oxide varistor (MOV) coupled between a second line and the Y-capacitor.
1 more element
An electronic equipment unit comprising:
- a chassis;
- an electrical wire supplying the chassis and further comprising a line voltage line, a neutral line, and a ground line;
- and
- a common mode surge protection filter circuit coupled to the electrical wire further comprising:
- an RC circuit comprising a bulk Y capacitor and a resistor coupled in parallel, the RC circuit coupled to the ground line;
- a first metal oxide varistor (MOV) coupled between the line voltage line and the RC circuit;
- and
- a second metal oxide varistor (MOV) coupled between the neutral line and the RC circuit.
5 more elements
Dependencies are inferred from the claim text.