DE755024C - Capacitor dielectric - Google Patents
Capacitor dielectricInfo
- Publication number
- DE755024C DE755024C DESCH124535D DESC124535D DE755024C DE 755024 C DE755024 C DE 755024C DE SCH124535 D DESCH124535 D DE SCH124535D DE SC124535 D DESC124535 D DE SC124535D DE 755024 C DE755024 C DE 755024C
- Authority
- DE
- Germany
- Prior art keywords
- capacitor dielectric
- dielectric
- temperature coefficient
- temperature
- compensate
- 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 6
- 239000000203 mixture Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004408 titanium dioxide 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)
- Inorganic Insulating Materials (AREA)
Description
Kondensatordielektrikum Isolierstoffe für den Bau elektrischer Kondensatoren besitzen häufig eine Temperaturabhängigkeit der Dielektrizitätskonstante, die für viele Verwendungszwecke zu groß ist. Es ist bekannt, durch Parallelschaltung eines zweiten Dielektrikums, das einen positiven Temperaturkoeffizienten besitzt, den Temperaturgang zu kompensieren. Auch sind Verfahren bekanntgeworden, die darauf abzielen, einem keramischen Dielektrikum schon bei der Herstellung solche Stoffe hinzuzufügen, die einen entgegengesetzten Temperaturkoeffizienten wie der Grundstoff besitzen. Auf diese Weise wird ein einheitlicher Isolierstoff erhalten, dessen Temperaturabhängigkeit der Dielektrizitätskonstante sehr klein ist. So %verden z. B. keramische Dielektrika aus Titandioxyd mit geringer Temperaturabhängigkeit hergestellt, indem eine ausreichende Menge von Magnesiumoxyd zugegeben wird.Capacitor dielectric Insulating materials for the construction of electrical capacitors often have a temperature dependence of the dielectric constant, which for many uses is too big. It is known to connect one in parallel second dielectric, which has a positive temperature coefficient, the Compensate for temperature drift. Procedures have also become known which point to this aim at a ceramic dielectric already in the manufacture of such substances add that has an opposite temperature coefficient to that of the base material own. In this way, a uniform insulating material is obtained, its temperature dependence the dielectric constant is very small. So% verden z. B. ceramic dielectrics made from titanium dioxide with low temperature dependence by sufficient Amount of magnesium oxide is added.
Es wurde nun gefunden, daß Bleizirkonat ein hervorragendes Dielektrikum mit hoher Die,lektrizitätskonstante abgibt, das in dem Gebiet bis etwa 2oo° einen hohen positiven Temperaturkoeffizienten besitzt. Gemäß der Erfindung wird daher zur Kompensation des Temperaturkoeffizienten Bleizirkonat als Mischungsbestandteil einem Kondensator aus anderen Oxvden mit entgegengesetztem Temperaturkoeffizienten zugesetzt. Dies ist besonders vorteilhaft, da wegen der hohen Dielektrizitätskonstante von Bleizirkonat zum Ausgleich der negativen Temperaturabhängigkeit eine viel kleinere Menge hiervon notwendig ist, als bei Verwendung z. B. von Magnesiumoxyd erforderlich wäre.It has now been found that lead zirconate is an excellent dielectric with a high dielectric constant emits that in the area up to about 2oo ° high positive Has temperature coefficients. According to the invention Therefore, to compensate for the temperature coefficient, lead zirconate is used as a component of the mixture a capacitor made of other oxides with opposite temperature coefficients added. This is particularly advantageous because of the high dielectric constant of lead zirconate to compensate for the negative temperature dependence a much smaller one Amount of this is necessary than when using z. B. of magnesium oxide required were.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DESCH124535D DE755024C (en) | 1936-02-01 | 1936-02-01 | Capacitor dielectric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DESCH124535D DE755024C (en) | 1936-02-01 | 1936-02-01 | Capacitor dielectric |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE755024C true DE755024C (en) | 1953-01-05 |
Family
ID=7451815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DESCH124535D Expired DE755024C (en) | 1936-02-01 | 1936-02-01 | Capacitor dielectric |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE755024C (en) |
-
1936
- 1936-02-01 DE DESCH124535D patent/DE755024C/en not_active Expired
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