DE703789C - Electrical resistance body - Google Patents

Electrical resistance body

Info

Publication number
DE703789C
DE703789C DE1937P0074709 DEP0074709D DE703789C DE 703789 C DE703789 C DE 703789C DE 1937P0074709 DE1937P0074709 DE 1937P0074709 DE P0074709 D DEP0074709 D DE P0074709D DE 703789 C DE703789 C DE 703789C
Authority
DE
Germany
Prior art keywords
resistance
electrical resistance
resistance body
electrical
temperature coefficient
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
Application number
DE1937P0074709
Other languages
German (de)
Inventor
Dr Wilfried Meyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Priority to DE1937P0074709 priority Critical patent/DE703789C/en
Application granted granted Critical
Publication of DE703789C publication Critical patent/DE703789C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/04—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient
    • H01C7/042—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient mainly consisting of inorganic non-metallic substances
    • H01C7/043—Oxides or oxidic compounds
    • H01C7/045—Perovskites, e.g. titanates

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Non-Adjustable Resistors (AREA)

Description

Elektrischer Widerstandskörper Im Hauptpatent ist ein elektrischer Widerstandskörper mit positiven Temperaturkoeffizienten des elektrischen Widerstaii.des angegeben, der aus einem leitenden Erdalkalititanat mit Perowskitstruktur besteht, dessen Sauerstoffgehalt geringer ist als nach der stöchiometrischen Zusammensetzung.Electrical resistance body The main patent is an electrical one Resistance body with positive temperature coefficient of electrical resistance specified, which consists of a conductive alkaline earth titanate with a perovskite structure, whose oxygen content is lower than according to the stoichiometric composition.

Die Erfindung geht von der Erkenntnis aus, daß ein solcher Erdalkalititanatkörper mit Perowskitstruktur und positiven Temperaturkoeffizienten sich auch vorzüglich zum Aufbau eines Widerstandskörpers - ohne Temperaturkoeffizienten des elektrischen -Widerstandes eignet, also z. B. zur h'onstanthaltung von Strömen in elektrischen Entladungslampen und elektrischen Meßgeräten verwendet werden kann.The invention is based on the knowledge that such an alkaline earth titanate body with a perovskite structure and positive temperature coefficients are also excellent to build a resistance body - without the temperature coefficient of the electrical -Resistance is suitable, so z. B. to keep currents in electrical currents constant Discharge lamps and electrical measuring devices can be used.

Zu diesem Zweck wird der im Hauptpatent angegebene- Erdalkalititanatkörper mit Perowskitstruktur und positiven Teinperaturkoeffizienten des elektrischen Widerstandes nach der Erfindung mit einem Erdalkalititanatkörper mit Spinellstruktur und negativen Temperaturkoeffizienten elektrisch verbunden, wobei sich die Widerstandswerte der beiden Widerstandskörper bei Änderung des Stromdurchganges um den gleichen, aber entgegengesetzt gerichteten Betrag ändern,-so daß die Widerstandskombination keinen Temperaturkoeffizienten des elektrischen Widerstandes mehr besitzt. , Mit einem derart einfach ausgebildeten Widerstandskombinationskörper lassen sich innerhalb -.eines größeren Temperaturbereiches konstan'.e Widerstandswerte erzielen. Ein besonderer Vorteil der neuen Widerstandskombination liegt ferner darin, daß die *aus Halbleiterstoffen bestehenden Widerstandskörper nur eine 'geringe Länge aufweisen und nur wenig Raum beanspruchen. Ein an sich bekannter Widerstandskörper mit Spinellstruktur und negativen Temperaturkoeffizienten ergibt sich beispielsweise dann, wenn man ein Gemisch aus Magnesiumoxyd und Titanoxyd in oxydierender Atniosphäre so hoch und so lange erhitzt, daG sich Spinellstruktur bildet und anschließend dann bei noch höheren Temperaturen in reduzierender Atmosphäre brennt.For this purpose, the alkaline earth titanate body specified in the main patent with a perovskite structure and positive temperature coefficient of the electrical resistance according to the invention is electrically connected to an alkaline earth titanate body with a spinel structure and negative temperature coefficients, the resistance values of the two resistance bodies when the current passage changes by the same, but oppositely directed Change amount so that the resistor combination no longer has a temperature coefficient of electrical resistance. , With such a simple resistor combination trained bodies can be inside - .One wider temperature range achieve konstan'.e resistance values. Another particular advantage of the new resistor combination is that the resistor bodies made of semiconductor materials are only short in length and take up little space. A known resistance body with a spinel structure and negative temperature coefficient is obtained, for example, when a mixture of magnesium oxide and titanium oxide is heated in an oxidizing atmosphere so high and for so long that a spinel structure is formed and then burns at even higher temperatures in a reducing atmosphere.

Die bisher verwendeten Widerstandskörper ohne Temperaturkoeffizienten bestehen meist aus Metallegierungen, die deswegen vielfach nicht befriedigen, weil sie nur über einen-'verhältnismäßig kleinen konstante Widerstandswerte er-eben. Man hat auch schon vorgeschlagen, zwei Widerstandskörper, deren Teinperaturkocffizienten des elektrischen Widerstandes ent-egengesetzt gerichtet sind, in Reihen- oder Parallelschaltung zu einer Einrichtung zti kombinieren. Hierbei bestalidcn die Widcrstündc mit positiven Temperaturkocftizienten -ziber nur aus einem Metalldraht (Eisen ) von verhältnismäßig -großer Länge, so daß die Unterbringung -dieses Widerstandes vei-liältnism:iftig viel Raum beansprucht.The previously used resistance bodies without temperature coefficients usually consist of metal alloys, which are therefore often unsatisfactory because it can only be achieved via a relatively small constant resistance value. It has also already been proposed that two resistance bodies, whose temperature coefficient of the electrical resistance are directed opposite, in series or parallel connection to combine zti to one facility. Here the resistance is assessed as positive Temperature coefficient -ziber only from a metal wire (iron) of proportionately -Large length, so that the accommodation -this resistance is vei-liältnism: iftig takes up a lot of space.

Claims (1)

PATt:INTA-,st-rucii: Elektrischer Widerstandskörper aiis cinein leitenden. eine Perowskitstruktur aufweisenden l?:dalkrilitit<<iiat, dessen S-.itterstotf gclialt geringer ist als derjenige, welcher der stöchioinetrischen Zt)sanini(#iisetZung entspricht, mich Patent 66o971, dadurch gekennzeichnet, d;if.) er mit eiticiti Widerstandskörper mit negativen Tcniperaturkoeffiziciiteii aus ciucin Spinellstruktur :iuf@vciseiideii I?rcialkalititanait elektrisch verbunden ist, wobei sich die Widerstandswerte der licidcn Widcrstandskörpcr bei Änderung des Stroindurchgangcs 11111 den glticlicn. aber entgegengesetzt gerichteten Betrag ändern, so daß die Widerstandskombination keinen Temperaturkoeffizienten des elektrischen Widerstandes mehr besitzt.PATt: INTA-, st-rucii: electrical resistance body aiis cinein conductive. l?: dalkrilitit << iiat having a perovskite structure, whose S-.itterstotf is generally lower than that which corresponds to the stoichioinetric Zt) sanini (#iisetZung, me patent 66o971, characterized, d; if.) it with eiticiti resistance body with negative Tcniperaturkoeffiziciiteii from ciucin spinel structure: iuf @ vciseiideii I? rcialkalititanait is electrically connected, whereby the resistance values of the licidcn resistance bodies become the same when the flow passage changes. but change the opposite amount so that the resistance combination no longer has a temperature coefficient of electrical resistance.
DE1937P0074709 1937-02-20 1937-02-20 Electrical resistance body Expired DE703789C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1937P0074709 DE703789C (en) 1937-02-20 1937-02-20 Electrical resistance body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1937P0074709 DE703789C (en) 1937-02-20 1937-02-20 Electrical resistance body

Publications (1)

Publication Number Publication Date
DE703789C true DE703789C (en) 1941-03-17

Family

ID=7392605

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1937P0074709 Expired DE703789C (en) 1937-02-20 1937-02-20 Electrical resistance body

Country Status (1)

Country Link
DE (1) DE703789C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE976937C (en) * 1943-06-26 1964-08-20 Siemens Ag Process for the production of a sintered electrical resistance body
DE1189646B (en) * 1962-10-23 1965-03-25 Licentia Gmbh Temperature-compensated, bifilar wound measuring resistor
DE1690724B1 (en) * 1959-03-14 1969-10-23 Meyer Hartwig Eberhard Resistance arrangement consisting of a hot conductor and a parallel resistor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE976937C (en) * 1943-06-26 1964-08-20 Siemens Ag Process for the production of a sintered electrical resistance body
DE1690724B1 (en) * 1959-03-14 1969-10-23 Meyer Hartwig Eberhard Resistance arrangement consisting of a hot conductor and a parallel resistor
DE1189646B (en) * 1962-10-23 1965-03-25 Licentia Gmbh Temperature-compensated, bifilar wound measuring resistor

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