DE851087C - Process for the production of electrical control resistors with non-linear characteristics - Google Patents

Process for the production of electrical control resistors with non-linear characteristics

Info

Publication number
DE851087C
DE851087C DES20540A DES0020540A DE851087C DE 851087 C DE851087 C DE 851087C DE S20540 A DES20540 A DE S20540A DE S0020540 A DES0020540 A DE S0020540A DE 851087 C DE851087 C DE 851087C
Authority
DE
Germany
Prior art keywords
sintering
production
linear characteristics
partial
partial resistances
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
DES20540A
Other languages
German (de)
Inventor
Erich Fenner
Julius Schneider
Bruno Dr Phil Thiede
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DES20540A priority Critical patent/DE851087C/en
Application granted granted Critical
Publication of DE851087C publication Critical patent/DE851087C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01CRESISTORS
    • H01C7/00Non-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
    • H01C7/10Non-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 voltage responsive, i.e. varistors
    • H01C7/105Varistor cores
    • H01C7/108Metal oxide
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01CRESISTORS
    • H01C7/00Non-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
    • H01C7/10Non-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 voltage responsive, i.e. varistors

Description

Verfahren zur Herstellung elektrischer Regelwiderstände mit nichtlinearer Charakteristik Die Erfindung befaßt sich mit einem Verfahren zur Herstellung elektrischer Regelwiderstände nichtlinearer Charakteristik. Derartige Widerstände werden in der Elektrotechnik zum Schalten hoher Leistungen oder zur Regelung der Stromstärke innerhalb weiterer Bereiche verlangt. Diese Widerstände wurden bislang dadurch hergestellt, daß der Drahtquerschnitt der Wicklung stufenweise der jeweiligen Belastung angepaßt wurde. Diese Widerstände sind teuer und nur für verhältnismäßig geringe Belastung geeignet. Hinzu kommt, daß bei verschieden großem Drahtquerschnitt entweder der Wickelkörper abgestuft werden muß, oder es ergibt einen stufenförmigen Weg für den Regler. Der Erfindung liegt die Aufgabe zugrunde, diese Nachteile zu vermeiden. Der erfinderischen Lösung liegt die Erkenntnis zugrunde, daß die Metallkeramik die Möglichkeit bietet, aus Pulvermischungen von Metallen mit Oxyden oder mit keramischen Massen oder mit beiden Stoffen durch Sintern Widerstandselemente beliebiger Form herzustellen, bei denen der Widerstandswert bei gleicher Größe der Widerstände innerhalb weiter Grenzen verändert werden kann.Process for the production of electrical variable resistors with non-linear Characteristics The invention is concerned with a method for producing electrical Control resistors with non-linear characteristics. Such resistances are in the Electrical engineering for switching high outputs or for regulating the amperage within further areas required. Up to now, these resistors have been produced by that the wire cross-section of the winding is gradually adapted to the respective load became. These resistors are expensive and only for a relatively low load suitable. In addition, if the wire cross-section is different, either the The bobbin must be stepped, or it results in a stepped path for the Regulator. The invention is based on the object of avoiding these disadvantages. The inventive solution is based on the knowledge that the metal-ceramic Possibility of powder mixtures of metals with oxides or with ceramic Masses or with both materials by sintering resistance elements of any shape to produce where the resistance value is within the same size of the resistors further limits can be changed.

Zum Beispiel wird bei einer Mischung von 5ooiö Ft und 500,ö A1,03 ein Widerstand von o,.l01tm erreicht. Durch Änderung des Eisengehaltes, z. B. auf 49,z5oio, steigt der Widerstand bei sonst gleichen Bedingungen bezüglich Sinterzeit, Sintertemperatur, Schutzgas @usw. auf 5 Ohm. Das Eisen kann natürlich durch andere Metalle, wie Kupfer, Nickel, Silber, Chrom, oder durch Metallegierungen ersetzt werden und das Aluminiumoxyd durch andere Oxyde oder durch keramische Stoffe oder durch beide Stoffarten. Unter Umständen ist ein Zusatz von Glas zweckmäßig.For example, a mix of 5ooiö Ft and 500, ö becomes A1.03 a resistance of o, .l01tm is reached. By changing the iron content, e.g. B. on 49, z5oio, the resistance increases with otherwise same conditions regarding Sintering time, sintering temperature, protective gas etc. to 5 ohms. The iron can of course by other metals such as copper, nickel, silver, chromium, or by metal alloys be replaced and the aluminum oxide by other oxides or by ceramic substances or both types of fabric. It may be advisable to add glass.

Die erfindungsgemäße Lösung besteht darin, daß der Widerstandskörper aus . mehreren aus verschieden zusammengesetzten Pulvermischungen von Metallen mit Oxyden 'oder mit keramischen Massen oder mit beiden Stoffen durch Sintern entstandenen Teilwiderständen zusammengefügt ist. Dabei kann so verfahren werden, daß die einzelnen Teilwiderstände durch Sintern hergestellt werden bzw. können die Mischungen verschiedener Zusammensetzung aneinandergefügt und dann gemeinsam dem SinterprozeB unterworfen werden.The solution according to the invention is that the resistance body the end . several of differently composed powder mixtures of metals with Oxides' or with ceramic masses or with both substances by sintering Partial resistances is put together. This can be done in such a way that the individual Partial resistances are produced by sintering or the mixtures can be different Composition joined together and then subjected to the sintering process together will.

Bei getrennten Teilwiderständen werden die einzelnen Bauelemente durch Druck zu einem einheitlichen Körper zusammengefaßt. Zur sicheren Kontaktierung der Bauelemente untereinander können die Anlegeflächen der Bauelemente durch ein Metallspritzverfahren metallisiert werden, oder man legt zwischen die Bauelemente weiche Metallfolien oder Drahtnetze, um einen gut leitenden Übergang ,zu erzielen. Man kann auf diese Weise aus den Teilwiderständen Widerstände mit ganz verschiedenen Charakteristiken für kleine und große Belastungen in einfacher Weise zusammenfüen.If the partial resistances are separated, the individual components are through Pressure combined into a single body. For secure contacting of the Components can be connected to one another by the contact surfaces of the components by means of a metal spraying process be metallized, or you put soft metal foils between the components or wire mesh to achieve a conductive transition. One can access this Make resistances with completely different characteristics from the partial resistances merge easily for small and large loads.

Claims (1)

PATENTANSPRÜCHE: i. Verfahren zur Herstellung elektrischer Regelwiderstände mit nichtlinearer Charakteristik, dadurch gekennzeichnet, daß der Widerstandskörper aus mehreren aus verschieden zusammemgesetzteg Pulvermischungen von Metallen mit Oxyden oder mit keramischen Massen oder mit beiden Stoffen durch Sintern entstandenen Teilwiderständen zusammengefügt ist. z. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß die Teilwiderstandskörper einzeln durch Sintern hergestellt und nachträglich elektrisch miteinander verbunden werden. 3. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß die die Teilwiderstände ergebenden Mischungen gemeinsam einer Sinterung unterworfen werden. Verfahren nach Anspruch z, dadurch gekennzeichnet, daß die elektrischen Übergänge zwischen den Teilwiderständen durch Metallisieren der zusammenstoßenden Flächen herbeigeführt werden. 5. Verfahren nach Anspruch z, dadurch gekennzeichnet, daß zur Kontaktierung der Teilwiderstände weiche Metallfolien, Drahtgewebe oder ähnliche leitende Verbindungen dienen. PATENT CLAIMS: i. Process for the production of electrical variable resistors with non-linear characteristics, characterized in that the resistor body is assembled from several partial resistances produced by sintering from differently composed powder mixtures of metals with oxides or with ceramic masses or with both substances. z. Method according to Claim i, characterized in that the partial resistance bodies are produced individually by sintering and are subsequently electrically connected to one another. 3. The method according to claim i, characterized in that the mixtures resulting in the partial resistances are jointly subjected to sintering. Method according to Claim z, characterized in that the electrical transitions between the partial resistances are brought about by metallizing the surfaces which meet. 5. The method according to claim z, characterized in that soft metal foils, wire mesh or similar conductive connections are used to contact the partial resistances.
DES20540A 1950-10-11 1950-10-11 Process for the production of electrical control resistors with non-linear characteristics Expired DE851087C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES20540A DE851087C (en) 1950-10-11 1950-10-11 Process for the production of electrical control resistors with non-linear characteristics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES20540A DE851087C (en) 1950-10-11 1950-10-11 Process for the production of electrical control resistors with non-linear characteristics

Publications (1)

Publication Number Publication Date
DE851087C true DE851087C (en) 1952-10-02

Family

ID=7476061

Family Applications (1)

Application Number Title Priority Date Filing Date
DES20540A Expired DE851087C (en) 1950-10-11 1950-10-11 Process for the production of electrical control resistors with non-linear characteristics

Country Status (1)

Country Link
DE (1) DE851087C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE962000C (en) * 1952-02-16 1957-04-18 Siemens Ag Process for producing electrical resistors from metal-ceramic
US5313184A (en) * 1991-12-21 1994-05-17 Asea Brown Boveri Ltd. Resistor with PTC behavior

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE962000C (en) * 1952-02-16 1957-04-18 Siemens Ag Process for producing electrical resistors from metal-ceramic
US5313184A (en) * 1991-12-21 1994-05-17 Asea Brown Boveri Ltd. Resistor with PTC behavior

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