DE681319C - Adjustable high resistance or - Google Patents

Adjustable high resistance or

Info

Publication number
DE681319C
DE681319C DEST51334D DEST051334D DE681319C DE 681319 C DE681319 C DE 681319C DE ST51334 D DEST51334 D DE ST51334D DE ST051334 D DEST051334 D DE ST051334D DE 681319 C DE681319 C DE 681319C
Authority
DE
Germany
Prior art keywords
mercury
resistance
high resistance
drop
adjustable high
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
DEST51334D
Other languages
German (de)
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.)
Steatit Magnesia AG
Original Assignee
Steatit Magnesia 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 Steatit Magnesia AG filed Critical Steatit Magnesia AG
Priority to DEST51334D priority Critical patent/DE681319C/en
Application granted granted Critical
Publication of DE681319C publication Critical patent/DE681319C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01CRESISTORS
    • H01C1/00Details
    • H01C1/12Arrangements of current collectors
    • H01C1/125Arrangements of current collectors of fluid contacts

Landscapes

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

Description

Regelbarer Hochohmwiderstand oder -spannungsleiser Die Erfindung bezieht sich auf bewegliche Abnahmekontakte für regelbare Hochohmwiderstände und insbesondere für die Zwecke der Fernmeldetechnik, bei denen die Kontaktabnahme mittels eines in--einer relativ zum Widerstand beweglichen Fassung gehaltenen Quecksilbertropfens erfolgt. Bei den bekannten Abnahmekontakten dieser Art hat man wohl an der Fassung für den Quecksilbertropfen eine Dichtung aus nachgiebigem Werkstoff angebracht, um Verlust an Quecksilber zu verhüten. Es besteht jedoch noch eine weitere Verlustquelle für das Quecksilber dadurch, daß zwischen der Widerstandsbahn und dem sie benetzenden Quecksilbertropfen chemische Einwirkungen auftreten können (Amalgambildung). Hier, schafft die Erfindung Abhilfe.Adjustable high-ohmic resistance or voltage quieter The invention relates to on moving pick-up contacts for adjustable high-ohmic resistances and in particular for the purposes of telecommunications, in which the establishment of contact by means of a - a drop of mercury held in a holder movable relative to the resistor he follows. With the known acceptance contacts of this type, one has probably at the socket A seal made of flexible material is attached for the mercury drop, to prevent loss of mercury. However, there is another source of loss for the mercury in that between the resistance track and the one wetting it Mercury drops chemical effects can occur (amalgam formation). Here, the invention provides a remedy.

Das Neue der Erfindung besteht darin, daß der Quecksilbertropfen vor Verlust durch Amalgambildung mit der Widerstandsbahn durch eine Deckschicht aus Lack auf der Widerstandsbahn geschützt ist. Die erfindungsgemäße Maßnahme führt dazu, daß alle Einflüsse, die zur Verunreinigung des Quecksilbers und unter Umständen nach längerer Zeit zu dessen Verlust führen können, ausgeschaltet werden.The novelty of the invention is that the mercury drops before Loss due to amalgam formation with the resistance track through a top layer Lacquer on the resistance track is protected. The measure according to the invention leads to that that all influences that lead to the contamination of the mercury and under certain circumstances can lead to its loss after a long period of time, must be switched off.

Ein Ausführungsbeispiel des Erfindungsgegenstandes zeigt die Zeichnung.The drawing shows an embodiment of the subject matter of the invention.

Auf einem Träger r zylindrischer Form ist die Widerstandsschicht 2 aufgebracht, die ihrerseits mit der dünnen Deckschicht 3 aus Lack versehen ist. Die bewegliche Kontaktgebung erfolgt durch den Quecksilbertropfen ¢ mittels Querleitung durch die sehr dünne Deckschicht 3 hindurch. Da die Längserstrekkung der Lackschicht 3 um viele Größenordnungen größer ist als die Schichtstärke, so wirkt die Deckschicht 3 in der Längsrichtung als reiner Isolator, der den Wert des eigentlichen Widerstandes nicht beeinflußt. Der Quecksilbertropfen q. wird in einer Fassung 5 gehalten. Die Fassung 5 ist in beliebiger Weise relativ zur Widerstandsbahn beweglich. An ihrem Rand befinden sich Filzstücke 6, welche die Fassung nach außen hin abschließen.The resistance layer 2 is on a support r of cylindrical shape applied, which in turn is provided with the thin top layer 3 made of lacquer. The moving contact is made by the mercury drop ¢ by means of a cross line through the very thin cover layer 3. Because the longitudinal extension of the paint layer 3 is many orders of magnitude greater than the layer thickness, this is how the top layer works 3 in the longitudinal direction as a pure insulator, the value of the actual resistance unaffected. The drop of mercury q. is held in a version 5. the Socket 5 is movable in any way relative to the resistance track. On theirs On the edge there are pieces of felt 6 which close off the socket towards the outside.

Claims (1)

PATr,NTANSPRUCII: Re.gelbarer Hochohmwiderstand oder mit :einem in einer relativ zum Widerstand beweglichen Fassung gehaltenen Quecksilbertropfen als Abnahmekontakt, dadurch gekennzeichnet, daß zum Schutze des Quecksilbertropfens vor Verlust -durch Amalgambildung die Widerstandsbahn mit .einer Deckschicht aus Lack versehen ist, welcher in der Längsrichtung der Deckschicht als hoher Widerstand im Vergleich zur Widerstandsbahn und in der Querrichtung als Leiter im Vergleich zur Widerstandsbahn anzusprechen ist.PATr, NTANSPRUCII: Regulated high resistance or with: a drop of mercury held in a holder movable relative to the resistor as a pick-up contact, characterized in that to protect the drop of mercury from loss - through amalgam formation, the resistance track is provided with a top layer of lacquer, which in the longitudinal direction of the top layer is a high resistance in comparison to the resistance track and in the transverse direction as a conductor compared to the resistance track.
DEST51334D 1933-09-30 1933-09-30 Adjustable high resistance or Expired DE681319C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEST51334D DE681319C (en) 1933-09-30 1933-09-30 Adjustable high resistance or

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST51334D DE681319C (en) 1933-09-30 1933-09-30 Adjustable high resistance or

Publications (1)

Publication Number Publication Date
DE681319C true DE681319C (en) 1939-09-20

Family

ID=7466256

Family Applications (1)

Application Number Title Priority Date Filing Date
DEST51334D Expired DE681319C (en) 1933-09-30 1933-09-30 Adjustable high resistance or

Country Status (1)

Country Link
DE (1) DE681319C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1080668B (en) * 1955-10-27 1960-04-28 Ibm Deutschland Changeable resistance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1080668B (en) * 1955-10-27 1960-04-28 Ibm Deutschland Changeable resistance

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