DE578636C - Glazed wire resistor - Google Patents

Glazed wire resistor

Info

Publication number
DE578636C
DE578636C DE1930578636D DE578636DD DE578636C DE 578636 C DE578636 C DE 578636C DE 1930578636 D DE1930578636 D DE 1930578636D DE 578636D D DE578636D D DE 578636DD DE 578636 C DE578636 C DE 578636C
Authority
DE
Germany
Prior art keywords
alkali
glazed
glaze
wire resistor
wire
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
DE1930578636D
Other languages
German (de)
Inventor
Dipl-Ing Michael Bichowsky
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.)
Wunderlich & Koenig GmbH
Original Assignee
Wunderlich & Koenig GmbH
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 Wunderlich & Koenig GmbH filed Critical Wunderlich & Koenig GmbH
Application granted granted Critical
Publication of DE578636C publication Critical patent/DE578636C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
    • H01C1/034—Housing; Enclosing; Embedding; Filling the housing or enclosure the housing or enclosure being formed as coating or mould without outer sheath
    • H01C1/036—Housing; Enclosing; Embedding; Filling the housing or enclosure the housing or enclosure being formed as coating or mould without outer sheath on wound resistive element

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Details Of Resistors (AREA)

Description

Einglasierter Drahtwiderstand Die Erfindung betrifft einen elektrischen Widerstand, der in eine Glasur eingebettet ist, deren Leitfähigkeit bei erhöhter Temperatur im Verhältnis zur Leitfähigkeit bei den bisher verwendeten Glasuren sehr gering ist.Glazed wire resistor The invention relates to an electrical one Resistance that is embedded in a glaze, the conductivity of which is increased when Temperature in relation to the conductivity of the glazes used so far is low.

Es ist bekannt, auf einen keramischen Wicklungsträger drahtgewickelte Widerstände durch eine Glasur vor Oxydation zu schützen. Durch das Auftragen der Glasur wird die Belastbarkeit der Widerstände :erhöht, und die Drähte können sich bei höheren Temperaturen nicht verschieben. Eine gewisse Grenze wird der Belastbarkeit dadurch gesetzt, daß jede Glasur bei höheren Temperaturen .elektrisch leitend wird; je höher die Temperatur ist, desto merklicher wird der Einfluß dieses Nebenschlusses. Erfindungsgemäß werden für einglasierte Widerstände solche Glasuren verwendet, die kleinste Leitfähigkeit bei höherer Temperatur besitzen. Als solche haben sich Glasuren erwiesen, die keine Alkalimetalle enthalten. Die kleinsten Mengen von Alkalimetallen in der Glasur beeinträchtigen deren Leitfähigkeit außerordentlich. Es ist zwar bei der Verwendung technischer Reagenzien unmöjlich, Alkali als Verunreinigung vollkommen auszuschließen, doch zeigt der praktische Versuch, daß bei der Verwendung solcher Reagenzien, die auf Alkali aufgebaut sind, eine starke Verminderung der Isolationsgüte erzielt wird, während diejenigen Anteile an Allkali, welche sich in üblicher Grenze der chemischen Verunreinigung bewegen, nicht mehr von erheblicher Bedeutung sind.It is known to wire-wound onto a ceramic winding carrier Protect resistors from oxidation by means of a glaze. By applying the Glaze increases the resilience of the resistors: it increases, and the wires can grow Do not move at higher temperatures. A certain limit is the resilience set by the fact that each glaze becomes electrically conductive at higher temperatures; the higher the temperature, the more noticeable the influence of this shunt becomes. According to the invention, those glazes are used for glazed resistors that have the lowest conductivity at higher temperatures. As such, glazes have proven themselves proven to contain no alkali metals. The smallest amounts of alkali metals in the glaze affect their conductivity extremely. Although it is at the use of technical reagents impossible, alkali as an impurity completely to be excluded, but the practical experiment shows that when using such Reagents that are based on alkali greatly reduce the insulation quality is achieved, while those proportions of Allkali, which are in the usual limit the chemical contamination move are no longer of significant concern.

Alkalifreie Glasuren geben wenig Glanz und keine besonders schönen Farben. Es ist daher vorteilhaft, diese alkalifreien Glasuren mit einer alkalihaltigen Glasurschicht zu bedecken, die hohen Glanz und schöne Färbungen aufweist. Sie ist vom Draht vollkommen isoliert und dient lediglich als äußerer Mantel.Alkali-free glazes give little shine and not particularly beautiful ones Colours. It is therefore advantageous to use these alkali-free glazes with an alkali-containing one To cover a layer of glaze that has a high gloss and beautiful tints. she is Completely insulated from the wire and only serves as an outer sheath.

Claims (1)

PATENTANSPRÜCHE: t. Einglasierter, auf einen keramischen Wicklungsträger gewickelter elektrischer Drahtwiderstand, dadurch gekennzeichnet, daß der Draht in eine alkalifreie Glasur eingebettet ist. z. Einglasierter, auf einen keramischen Wicklungsträger gewickelter elektrischer Drahtwiderstand nach Anspruch r, dadurch gekennzeichnet, daß der in eine alkalifreie Glasurschicht eingebettete Draht nochmals mit einer alkalihaltigen Glasur bedeckt wird.PATENT CLAIMS: t. Glazed onto a ceramic winding carrier Coiled electrical wire resistor, characterized in that the wire is embedded in an alkali-free glaze. z. Glazed, on a ceramic Winding support for a wound electrical wire resistor according to Claim r, characterized in that characterized in that the wire embedded in an alkali-free glaze layer again covered with an alkaline glaze.
DE1930578636D 1930-02-14 1930-02-14 Glazed wire resistor Expired DE578636C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE578636T 1930-02-14

Publications (1)

Publication Number Publication Date
DE578636C true DE578636C (en) 1933-06-15

Family

ID=6570458

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1930578636D Expired DE578636C (en) 1930-02-14 1930-02-14 Glazed wire resistor

Country Status (1)

Country Link
DE (1) DE578636C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE748299C (en) * 1938-01-08 1944-11-01 Process for the production of a wire-wound variable resistor which is located on a rod or ring-shaped ceramic carrier and is covered with glaze
DE1281005B (en) * 1956-09-24 1968-10-24 Libbey Owens Ford Glass Co Electrically conductive glass product and process for its manufacture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE748299C (en) * 1938-01-08 1944-11-01 Process for the production of a wire-wound variable resistor which is located on a rod or ring-shaped ceramic carrier and is covered with glaze
DE1281005B (en) * 1956-09-24 1968-10-24 Libbey Owens Ford Glass Co Electrically conductive glass product and process for its manufacture

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