DEST001063MA - Shielded electrical capacitor - Google Patents

Description

Pirma ütettner & ■ Co., i ' abrik βIektrockeramischer Artikel ₉ keuf -; egnits, iiersbruckeretrasse 22.

Shielded electrical capacitor.

The invention relates to shielded electrical capacitors, as they are often used in high-frequency circuits . are needed . Uro the requirements that are imposed on those for ^ aeseiianf t he FINISH suitable -Ieaente to meet every Jesiehung following .bedingungen must be met as far as possible:

High capacities must be accommodated in the smallest of seams »the static a userβ shielding should be as complete as possible;

the isolation path between the two-sided occupancies should be as large as possible; desirable also be noted that in a simple <else a Temperet primal AOiapens ation can be achieved, it should be winseleleaenten from as few in! sifter and reliable "else different i-.apazitätswerte in adaptation to the respective existing χ all ζ us Àíãåë ns share laeseni the i'inaelerneut should be able to be produced in a simple mass production, 2. ';, as pressed parts, and require as little machining as possible.

In the case of the shielded capacitors used, one of which has a condenser coating on Arde and can be designed so that it also takes over the static cooling, the above conditions are often only insufficiently or partially fulfilled cannot always be reconciled with a creepage distance of a desirable length between the opposing assignments. Achieving the different values of capacity and temperature dependency used for different (learned) mostly requires capacitor components, each of which is only capable of limited use, which makes production, storage and assembly more difficult.

The invention remedies these shortcomings and allows to build _{shielded capacitors and ondensator-Aombinations with simple IImittel 5} , which on the one hand meet the requirements listed above and on the other hand, as it is possible by using standardized items, a diverse and general application with adaptation to the different Arfosdernisee of the Ainselfall are capable «. For this purpose, an electrical capacitor, the grounded covering of which at the same time takes over the static shielding, is composed according to the invention of several disc-shaped, electrically parallel-connected partial capacitors. Here, in general, an even number of flat, single-ended capacitors, packed one above the other, are shielded by their external coatings. i? he inner linings are directed to the outside

Supply lines announce, u he Ab sc Jairmuiig will be particularly effective and complete, while maintaining a large odor path between the opposing coverings, if simple planners ο clieibeη those with raised edges are used for the cinzel & ondensators , m &% <k * Ycl \ ä-afireii they are combined in pairs on β one inside the other _p su. a closed lapael ". uie iimer & n ivcondenser linings receive an outward -facing approach, and the outer ones form one, the entire outside of the x-capsule, with the exception of the passage point of the Inner connection , encircling leakage that acts as a grounded shielding housing for the gang condenser . Tergliefaen with flat wcheibchenkondensatoren enlarged the increased land the Isolierweg _s soidass with the same capacity and much more complete Absehiy "" mung 1 0 0 se ne η to a capsule 2 us a mie nge s ch capacitors to make do with smaller dimensions than capacitor s old pure planning ocheibchen. For example , Lapeel capacitors of the type described have a diameter of 16 mm.

with a capacity of 500 pi. when using a ceramic dielectric with a dielectric constant of about 9o.

Vin further advantage of the inventive aee η was building abgesehirm ter capacitors from seheibchenförmigen superimposed ^ inaeIkondβnsat 0 ran, preferably in the Ausführungaform as pairs zusernmenge1egte Balbkapseln or pans, there Clarin ₈ is that by selecting appropriate .Dielektriken for Einselkonaensatoren in a particularly simple ^ else almost every The desired temperature coefficient of the capacitance of the capacitor combination to be formed can be produced. By using different temperature .uielektriken Loeffisienten the capacity can, in other words according to per se known

verfaliren a so-called © "i'eiaperatur-jfcompeneation" susemmenge ste lit be ο sub Ialirimg of .-. bacnirmwirkuig two or very so-called "Temperator- a -oiapensat ionsanteiIe" densely packed eu united constructive. ■ Jinlieit Who dens which are due the dense Stapelungihr he plates or £ laciikapseIartigen you -'eile, rch good and fast i 'e / aperatureusgleieh distinguished, that is. a .heating © the cooling of the different T ^ # a & 4 ^ ar % * a "*" 44e takes place almost on the same side, whereby the so-called temperature curve ^{0 of} the capacity becomes the same.

For to be used Melektriken masses are selected, and the required properties z.ß * ceramic .alas sen to which the coverings are else densely applied in known "" The shape of the simple IHttohen or oc heibeben with or without increased λ. And can be effected by Iressen easily Seise, übensο can be done applying the assignments by a known method of mass production. from the sc formed standardized. "inzelkondensatorelemeiiten can then be easily the various shielded i .ond ens at or-comb inat i ones of the respective desired build partnerships own.

In an exemplary embodiment of the preferred type of construction, "af - / *, the ^ 4Äa ? efeiung is shown enlarged in a schematic cross-section. represents, whereby the actually tightly lying, ie le gunge η to clarify the representation with a slight distance

are marked by their respective! 'räger-Melektrikum. Sbea »BO actually lie on top of one another with their straps and only allow the connection line for the interior to pass through.

The ceramic dielectrics 1 and 2, for example, are οcheibciien with raised. The two outer ondene-sator layers _8, which only allow the required insulation spacing at the point where the internal feed line 5 leads up, have a cable shield housing that almost completely envelops the overall condenser 4 flat capsules 1 and 2 are provided with the coverings 3 leaving the insulating -andes free, which are attached to the i; ure hf uhr unge s te 1 Ie are jointly connected to the supply line 5 »With appropriate interconnection, several such capsule elements can also be combined to form a shielded ο tape condenser or desired properties.

Claims (5)

ι patent claims. che * 1. .Electric capacitor,; ei which the ete -ei ag simultaneously the static Ahsehirmung accepts, characterized in that a Ge including lcond β ns at or from a plurality of superposed disc;, enformigen, electrically connected in parallel .Einzel- or I'e il & ondens at or en composed is β 2 «. Electric capacitor according to Claim 1, characterized in that the disc-shaped individual capacitors have a raised ".and" 44 defl them _; in pairs lying on top of each other ₍ united on a closed aapule " 5 · electrical capacitor according to / -, ns pruch 2, characterized in that the potential-side capacitor layers are applied to the flat inside the raised bands, connected to one another and led out of the junction , and that the earth-side 4 layers are attached to the entire outer side of the capsule, with the exception of the ducting point of the annenbelag ee . 4 «iilektrieclier capacitor according addressed 1,2 or 3> characterized in that _9-au a konäensator koiabinatioa united inaelkondensatoren ^ _x for the purpose wahi% zeal kinsteilung the temper ature-i'.oeffizienten the capacity of the Korabination ( ^'i Iemperatur-AOmpensation") are disengaged with dielectrics of different ismperature coefficients of the capacitance . 5. electrical capacitor according to claim 4 » characterized in that two or more -eg ': ⁱ ^ e- ~ ^' px ^ i» - Tr0ffi ^ a- «« ^ e ^ & e ^ itoie = ⁴¹ = - ^ © * iilinaelkondensatoren tightly packed are combined into a .baueinheit "whose üemperaturgang of capacity taking place as a result of virtually simultaneously ^ changes in temperature that are ** ■ shaped. same-