Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Patent
1998-05-15
1999-12-07
Reichard, Dean A.
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
361508, 361528, 361532, H01G 4005
Patent
active
059993995
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to an electric condenser or capacitor, further to a condenser array composed of two or more such condensers in accordance with the, and to a method for producing an electric condenser.
Electrical condenser or capacitors are known in a multitude of embodiments, for example as plate condensers, cylinder condensers, encased condensers and the like. It is common to all condensers that plate-shaped or flat, layer-like poles are placed opposite each other, wherein a dielectric, for example air, paper, ceramic material or the like is arranged between the poles. In order to increase the capacitance of the condenser, it is possible to achieve an increase in the plate surface by means of flat nesting of condenser plates. In spite of this the result is a limited capacitance per unit of structural volume. It is furthermore not possible to make the known condensers arbitrarily small.
SUMMARY OF THE INVENTION
It is the object of the present invention to provide an electrical condenser and a condenser array which is composed of two or more such condensers, which can meet the demands for high charge capacities with a comparably low structural volume and weight and can be constructed smaller than before. Furthermore, a method for producing such an electrical condenser, or respectively condenser array is to be provided, which is neither more labor-intensive nor cost-intensive.
This object is attained in connection with an electrical condenser of the species mentioned, or respectively a condenser array of the species mentioned, or respectively its or their production in that two pole arrangements, each having a three-dimensional grid-like structure and arranged nested inside each other in all spatial directions is provided, in that at least one grid-like structure is cut through in one plane, and in that continuous recesses are cut in a blank which are offset with respect to each other, in at least two planes, which extend vertically with respect to each other, and in at least two planes, which are offset by 45.degree., achieving a three-dimensional, grid-like total structure, separated into at least two individual structures constituting the pole arrangements.
By means of the measures in accordance with the present invention, a design of the pole arrangements as a three-dimensional body has been achieved, which has a large surface in relation to its own structural volume. The two pole arrangements are spatially nested so that the distances between the pole arrangements can become very small which, the same as the increased surface of the pole arrangements, considerably adds to a high capacitance.
With recesses produced by laser, the production of such condensers can be accomplished down to the size range of chip production, so that ICs with integrated condensers made of the same material and having large capacitances can be produced. The production of condensers whose recesses are cylindrical is particularly advantageous because of the surfaces of the circular recesses of essentially the same shape.
Further advantages of the measures of the present invention lie in that the loss angle of the condenser is improved and a reduced and linear temperature dependency has been achieved. Furthermore, almost any arbitrary structural shape can be achieved in a variable manner. Elaborate contacting at the pole arrangements for the voltage supply is not necessary; in addition, the contact positions are variable.
BRIEF DESCRIPTION OF THE DRAWINGS
Further details of the present invention can be taken from the following description, wherein the invention is described in more detail and explained by means of the exemplary embodiments represented in the drawings. Shown are:
FIG. 1, which is a condenser in accordance with a first exemplary embodiment of the present invention in a partially broken perspective representation;
FIG. 1A, which is a grid element of one of the pole arrangements in FIG. 1 in an enlarged perspective representation;
FIG. 1B, which is a representation corr
REFERENCES:
patent: 3626258 (1971-12-01), Makow
Hoffmann Hans
Siemonsen Sven
Dinkins Anthony
Reichard Dean A.
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