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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/12—Arrangements of current collectors
- H01C1/125—Arrangements 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
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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)
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) |
-
1934
- 1934-09-20 AT AT151568D patent/AT151568B/en active
- 1934-09-24 GB GB27419/34A patent/GB428579A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB428579A (en) | 1935-05-15 |
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