AT151568B - Movable pick-up contact for adjustable resistors. - Google Patents

Movable pick-up contact for adjustable resistors.

Info

Publication number
AT151568B
AT151568B AT151568DA AT151568B AT 151568 B AT151568 B AT 151568B AT 151568D A AT151568D A AT 151568DA AT 151568 B AT151568 B AT 151568B
Authority
AT
Austria
Prior art keywords
contact
movable pick
adjustable resistors
movable
conductive liquid
Prior art date
Application number
Other languages
German (de)
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
Application granted granted Critical
Publication of AT151568B publication Critical patent/AT151568B/en

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)
  • Contacts (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Adjustable Resistors (AREA)
  • Details Of Resistors (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Beweglicher   Abnahmeliontakt   für regelbare Widerstände. 
 EMI1.1 
 

 <Desc/Clms Page number 2> 

 dünne Lackschicht hindurch. Der Queeksilbertropfen wird von einer metallischen Fassung   5   in der gezeichneten Weise gehalten. An den Rändern der Fassung befinden sich   Filzstüeke     6,   welche die Fassung nach aussen hin abschliessen. 



   Da die Lackschicht 3, damit sie den zur Kontaktgebung erforderlichen ausserordentlich geringen Widerstand in der   Querriehtung   aufweist, überaus dünn sein muss, kommen hiefür nur Lacke in Betracht, die sich in ganz besonders dünner Schicht auftragen lassen. Je dünner diese sein kann, desto weniger kommt es auf die spezifische Leitfähigkeit des betreffenden Lackes in dünner Schicht an. Im übrigen spielen geringe Unterschiede im Isolationswiderstand der Laekschicht bei hochohmigen Regelwiderständen, wie auch die Versuche gezeigt haben, keine Rolle. 



   PATENT-ANSPRÜCHE :
1. Beweglicher Abnahmekontakt für regelbare Widerstände und Spannungsteiler, insbesondere für die Zwecke der   Fernmeldetechnik   unter Verwendung einer leitenden Flüssigkeit, die in einer relativ zum Widerstand beweglichen Fassung gehalten ist, dadurch gekennzeichnet, dass die Ränder der Fassung mit gegen die Widerstandsoberfläehe vorragenden Filzstreifen od. dgl. versehen sind, so dass nur die leitende Flüssigkeit die Kontaktgebung vermittelt und ein Verlust der leitenden Flüssigkeit durch Verdampfen oder durch Ausfliessen aus der Fassung sowie ein Verschmutzen der leitenden Flüssigkeit vermieden ist.



   <Desc / Clms Page number 1>
 



  Movable acceptance clock for adjustable resistances.
 EMI1.1
 

 <Desc / Clms Page number 2>

 thin layer of lacquer through. The queek silver drop is held by a metallic holder 5 in the manner shown. At the edges of the frame there are felt pieces 6, which close the frame to the outside.



   Since the lacquer layer 3 has to be extremely thin so that it has the extremely low resistance required for contacting in the transverse direction, only lacquers that can be applied in a particularly thin layer are considered for this. The thinner it can be, the less the specific conductivity of the paint in question is important in a thin layer. Otherwise, slight differences in the insulation resistance of the Laek layer in the case of high-resistance control resistors, as the tests have shown, do not play a role.



   PATENT CLAIMS:
1. Movable pick-up contact for adjustable resistors and voltage dividers, especially for the purposes of telecommunications using a conductive liquid which is held in a socket that is movable relative to the resistor, characterized in that the edges of the socket with felt strips protruding against the resistor surface or the like are provided, so that only the conductive liquid provides the contact and a loss of the conductive liquid through evaporation or by flowing out of the holder and contamination of the conductive liquid is avoided.

 

Claims (1)

2. Beweglicher Abnahmekontakt nach Anspruch 1 mit Quecksilber als leitender Flüssigkeit, dadurch gekennzeichnet, dass der Queeksilbertropfen vor Verlust durch Amalgambildung mit der Widerstandsbahn durch eine Deckschicht aus Lack auf der Widerstandsbahn geschützt ist. EMI2.1 2. Movable pick-up contact according to claim 1 with mercury as the conductive liquid, characterized in that the Queeksilbertropfen is protected from loss by amalgam formation with the resistance track by a cover layer of lacquer on the resistance track. EMI2.1
AT151568D 1933-09-29 1934-09-20 Movable pick-up contact for adjustable resistors. AT151568B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE428579X 1933-09-29

Publications (1)

Publication Number Publication Date
AT151568B true AT151568B (en) 1937-11-25

Family

ID=6477486

Family Applications (1)

Application Number Title Priority Date Filing Date
AT151568D AT151568B (en) 1933-09-29 1934-09-20 Movable pick-up contact for adjustable resistors.

Country Status (2)

Country Link
AT (1) AT151568B (en)
GB (1) GB428579A (en)

Also Published As

Publication number Publication date
GB428579A (en) 1935-05-15

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