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US 4,788,624 AGranted
Capacitor having current surge protection
AssigneeNorth American Philips Corporation
InventorThomas F. Strange
Life of this patent
Estimating the term…
Abstract
A capacitor assembly including a metallized dielectric capacitor and an inductor as integral parts. The inductor, which suppresses current surges which would destroy thin metallic layer electrodes of the capacitor, includes a conductive coil in series with the capacitor and a ferromagnetic core disposed in available space in a container for the capacitor.
Claims10
A surge-protected metallized dielectric capacitor assembly comprising:
- a. a closed container;
- b. a metallized dielectric capacitor enclosed in the container, said capacitor including first and second metallized insulative layers;
- c. first externally-accessible connection means electrically connected to the first metallized layer;
- d. a ferromagnetic core disposed in space in said container not occupied by the capacitor, said ferromagnetic core comprising a filler material containing ferromagnetic particles;
- e. a conductive coil positioned in the assembly such that it is magnetically coupled to the ferromagnetic core to form an inductor, a first end of said coil being electrically connected to the second metallized layer;
- and
- f. second externally-accessible connection means electrically connected to a second end of the coil.
4 more elements
A surge-protected metallized dielectric capacitor assembly comprising:
- a. a closed container;
- b. a metallized dielectric capacitor enclosed in the container, said capacitor including first and second metallized insulative layers;
- c. first externally-accessible connection means electrically connected to the first metallized layer;
- d. a ferromagnetic core disposed in space in said container not occupied by the capacitor, said ferromagnetic core comprising a filler material containing a predetermined concentration of ferromagnetic particles;
- e. a conductive coil at least partially surrounding the ferromagnetic core and forming therewith an inductor, a first end of said coil being electrically connected to the second metallized layer;
- and
- f. second externally-accesible connection means electrically connected to a second end of the coil.
4 more elements
A surge-protected metallized dielectric capacitor assembly comprising:
- a. a closed container;
- b. a metallized dielectric capacitor enclosed in the container, said capacitor including first and second metallized insulative layers;
- c. first externally-accessible connection means electrically connected to the first metallized layer;
- d. a ferromagnetic core disposed in space in said container not occupied by the capacitor;
- e. a conductive coil positioned in the assembly such that it is magnetically coupled to the ferromagnetic core to form an inductor, first end of said coil being electrically connected to the second metallized layer;
- f. second externally-accessible connection means electrically connected to a second end of the coil;
- and
- g. an electromagnetically-actuated, normally-closed switch electrically connected in series with the coil, said switch comprising ferromagnetic actuator means magnetically coupled to the inductor for opening the switch in response to current surges of predetermined magnitude.
5 more elements
Dependencies are inferred from the claim text.