DE966275C - Electrical capacitor with a ceramic multilayer dielectric with any temperature dependence of the capacitance - Google Patents
Electrical capacitor with a ceramic multilayer dielectric with any temperature dependence of the capacitanceInfo
- Publication number
- DE966275C DE966275C DES12438D DES0012438D DE966275C DE 966275 C DE966275 C DE 966275C DE S12438 D DES12438 D DE S12438D DE S0012438 D DES0012438 D DE S0012438D DE 966275 C DE966275 C DE 966275C
- Authority
- DE
- Germany
- Prior art keywords
- capacitance
- temperature dependence
- electrical capacitor
- multilayer dielectric
- ceramic multilayer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000003990 capacitor Substances 0.000 title claims description 11
- 239000000919 ceramic Substances 0.000 title claims description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910000464 lead oxide Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/258—Temperature compensation means
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Description
Elektrischer Kondensator mit einem keramischen Mehrschichtendielektrikum beliebiger Temperaturabhängigkeit der Kapazität Die Erfindung betrifft einen Kondensator mit einem Mehrschicht-Dielektrikum aus innig verbundenen, insbesondere keramischen Schichten hoher Dielektrizitätskonstante (DK) und mittlerem bis hohem Temperatur-Koeffizienten (TK) der DK und Schichten 1<Iei#nerDK und mittlerem bis hohem TK entgegengesetzten Vorzeichens. Versuche haben ergeben, daß es nach dem- Gedanken der Erfindung möglich ist, Kondensatoren mit beliebiger Temperaturabhängigkeit der Kapazität, insbesondere mit temperaturunabhängiger Kapazität, zu hauen, die sich durch eine hohe resultierende DK auszeichnen.Electrical capacitor with a ceramic multilayer dielectric of any temperature dependence of the capacitance nerDK and medium to high TK have opposite signs. Tests have shown that, according to the concept of the invention, it is possible to cut capacitors with any temperature dependence of the capacitance, in particular with a temperature-independent capacitance, which capacitors are characterized by a high resulting DC.
Es ist schon vorgeschlagen worden, ein keramisches Dielektrikum mit hoher DK und hohem TK dadurch ternperaturunabhängig zu machen, daß man Zuschlagstoffe mit entgegengesetztem TK hinzugibt, die den TK ganz oder teilweise kompensieren. Wie aber die Rechnung und die praktischen Ergebnisse zeigen, besitzt eine solche Kombination eine im Verhältnis zur DK der Komponente hoher DK sehr niedrige resultierende DK.It has already been proposed to use a ceramic dielectric To make high DK and high TK independent of the temperature by adding aggregates with the opposite TC, which fully or partially compensates for the TC. But as the calculation and the practical results show, it has one combination a very high DC in relation to the DC of the component low resulting DK.
Dieser Nachteil wird vermieden, wenn die Temperaturkompensation im Sinne der Erfindung durch eine Anwendung mehrerer sich kompensierender Schichten parallel zu den Kondensatorbelägen durchgeführt wird. Besonders günstig für die Erzielung einer hohen resultierenden DK des Dielektrikums verhalten sich bei dieser Ausführung überraschenderweise Kompensationsstoffe mit kleiner DK und hohem TK, d. h. also möglichst großem Verhältnis TK/DK. Wird eine keramische Ausführung des Kondensators g.-wählt, so kann dies so geschehen, daß der Scherben mit hoher DK und ein Scherben mit kleiner DK und entgegengesetzter Temperaturabhängigkeit der DK schichtig zusam-. mengebrannt werden. Technisch günstige Verhältnisse ergeben sich, wenn der Scherben' -mit hoher DK nachträglich mit einer Glasur kleiner DK und mittlerem bis hohem TK versehen wird. Ein Vorteil diesr-,r Ausführungsform ist darin zu- sehen, fertigen Teilen durch den einfachen und keramisch leicht auszuführenden Vorgang des Schmelzglasierens jeden -,-#wünschten TK, insbesondere den TKO, zu geben, wobei selbstverständlich die Endwerte nach der positiven und negativen Seite durch den Eigen-TK des Scherbens und der Glasur gegeben sind.This disadvantage is avoided if the temperature compensation within the meaning of the invention is carried out by using several compensating layers parallel to the capacitor layers. In this embodiment, compensation substances with a small DK and a high TK, ie. H. so the highest possible ratio TK / DK. If a ceramic version of the capacitor is selected, this can be done in such a way that the body with a high DK and a body with a small DK and opposite temperature dependence of the DK are layered together. can be burned. Technically favorable conditions result when the body with high DK is subsequently provided with a glaze of small DK and medium to high TK. An advantage of this embodiment is to be seen in the fact that the finished parts can be given every -, - # desired TK, especially the TKO, through the simple and easy ceramic process of melting glazing, whereby the final values are of course on the positive and negative side are given by the inherent TC of the body and the glaze.
Folgende Ausführungsform hat sich besonders praktisch bewährt: Ein Scherben mit einer DK 8o und einem TK - 8oo - io-6 glasiert mit einer normalen Schmelzglasur (6o% Bleioxydgehalt) mit einer DK = 7 und einem TK = + 300 - io-6 im Schichtdickenverhältnis 4,2 : i ergibt ein Kondensator-Dielektriktun teniperaturunabhängiger DK von etwa 25. The following embodiment has proven particularly practical: A body with a DK 8o and a TK - 8oo - io-6 glazed with a normal melt glaze (6o% lead oxide content) with a DK = 7 and a TK = + 300 - io-6 in the layer thickness ratio 4.2 : i results in a capacitor dielectric constant, independent of the temperature, of about 25.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES12438D DE966275C (en) | 1939-02-21 | 1939-02-21 | Electrical capacitor with a ceramic multilayer dielectric with any temperature dependence of the capacitance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES12438D DE966275C (en) | 1939-02-21 | 1939-02-21 | Electrical capacitor with a ceramic multilayer dielectric with any temperature dependence of the capacitance |
Publications (1)
Publication Number | Publication Date |
---|---|
DE966275C true DE966275C (en) | 1957-07-18 |
Family
ID=7473989
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES12438D Expired DE966275C (en) | 1939-02-21 | 1939-02-21 | Electrical capacitor with a ceramic multilayer dielectric with any temperature dependence of the capacitance |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE966275C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1060497B (en) * | 1953-01-15 | 1959-07-02 | Steatit Magnesia Ag | Electrical capacitor with a composite dielectric |
DE1214786B (en) * | 1957-10-26 | 1966-04-21 | Standard Elektrik Lorenz Ag | Electrical capacitor and process for its manufacture |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR757782A (en) * | 1932-07-01 | 1934-01-04 | Telefunken Gmbh | Capacitor with capacity independent of thermal variations |
DE668339C (en) * | 1934-04-21 | 1938-12-01 | Steatit Magnesia Akt Ges | Electric capacitor |
-
1939
- 1939-02-21 DE DES12438D patent/DE966275C/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR757782A (en) * | 1932-07-01 | 1934-01-04 | Telefunken Gmbh | Capacitor with capacity independent of thermal variations |
DE668339C (en) * | 1934-04-21 | 1938-12-01 | Steatit Magnesia Akt Ges | Electric capacitor |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1060497B (en) * | 1953-01-15 | 1959-07-02 | Steatit Magnesia Ag | Electrical capacitor with a composite dielectric |
DE1214786B (en) * | 1957-10-26 | 1966-04-21 | Standard Elektrik Lorenz Ag | Electrical capacitor and process for its manufacture |
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