DE519258C - Cast iron electrical resistance - Google Patents

Cast iron electrical resistance

Info

Publication number
DE519258C
DE519258C DEA58220D DEA0058220D DE519258C DE 519258 C DE519258 C DE 519258C DE A58220 D DEA58220 D DE A58220D DE A0058220 D DEA0058220 D DE A0058220D DE 519258 C DE519258 C DE 519258C
Authority
DE
Germany
Prior art keywords
cast iron
electrical resistance
parallel
iron electrical
strips
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
DEA58220D
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.)
AEG AG
Original Assignee
AEG AG
Publication date
Priority to DEA58220D priority Critical patent/DE519258C/en
Application granted granted Critical
Publication of DE519258C publication Critical patent/DE519258C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C3/00—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids
    • H01C3/10—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element having zig-zag or sinusoidal configuration
    • H01C3/12—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element having zig-zag or sinusoidal configuration lying in one plane

Landscapes

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

Description

Elektrischer,Widerstand aus Gußeisen Die Erfindung betrifft eine weitere zweckmäßige Ausgestaltung des elektrischenWiderstandes aus Gußeisen., der in mehrere parallel geschaltete, mäanderförmige Streifen unterteilt ist, die an -den Enden miteinander verbunden sind, nach Patent 486:243. Die mechanische Festigkeit dieser Widerstandskörper ist besonders bei weitergehender Unterteilung der Streifen verhältnismäßig gering.Cast iron electrical resistor The invention relates to another expedient configuration of the electrical resistance made of cast iron., which is divided into several meander-shaped strips connected in parallel are subdivided at the ends are connected to each other, according to Patent 486: 243. The mechanical strength of this Resistance body is particularly proportionate when the strips are further subdivided small amount.

Dieser Nachteil wird erfindungsgemäß dadurch beseitigt, daß die mäanderförmigen Streifen auch zwischen den Enden an einer oder mehreren Wendestellen derart miteinander verbunden werden, daß die zwischen den Verbindungsstellen parallel geschalteten Streifenteile annähernd, gleiche Widerstandswerte aufweisen. Ein derartiger Widerstand besitzt die gleiche günstige Stromverteilung wie der Widerstand nach dem Patent 486 243, zeichnet sich jedoch ihm gegenüber .durch eine wesentlich größere mechanische Festigkeit aus. Es ist also möglich, derartige Widerstände in eine weit größere Anzahl paralleler Streifen zu zerlegen, als es sonst möglich ist. Es können nun zwischen den Klemmen eine oder mehrere derartige Verbindungsstellen vorgesehen sein. In jedem Falle bleibt .die Stromdichte in den zNvischen zwei Verbindungsstellen parallel geschalteten Streifenteilen, deren Widerstände annähernd gleiche sind, ungefähr .dieselbe, und nur die Verbindungsstellen selbst haben eine etwas geringere Stromdichte infolge ihres größeren Querschnittes.This disadvantage is eliminated according to the invention in that the meander-shaped Strips with one another in this way also between the ends at one or more turning points are connected that the connected in parallel between the connection points Parts of the strip have approximately the same resistance values. Such a resistance has the same favorable current distribution as the resistor according to the patent 486 243, however, is distinguished from it by a much larger mechanical Strength. So it is possible to convert such resistances into a much larger one Number of parallel strips to be disassembled than is otherwise possible. It can now one or more such connection points can be provided between the clamps. In any case, the current density remains in the two connecting points strip parts connected in parallel, the resistances of which are approximately the same, roughly the same, and only the joints themselves have a slightly smaller one Current density due to their larger cross-section.

@@ In der Zeichnung .ist ein Ausführungsbeispiel des neuen Widerstandes dargestellt. Die einzelnen parallelen, mäanderförmig verlaufenden Streifen sind an ihren Enden a und e zusammengeschaltet und mit Anschlußteilen versehen. Außerdem sind an den durch die Pfeile b, c, d angedeuteten Stellen Verbindungen ,der Streifen vorgesehen. Die Anordnung ist so getroffen, daß die entstandenen Streifenteile, beispielsweise f, ä, da, i, zwischen den Verbindungsstellen a und. b annähernd gleiche Längen und deshalb gleiche elektrische Widerstandswerte aufweisen. Da die durch die Streifenteile f, g, dz, i fließenden Ströme gleich groß sind, werden sie gleichmäßig erwärmt.An exemplary embodiment of the new resistor is shown in the drawing. The individual parallel, meandering strips are connected together at their ends a and e and are provided with connecting parts. In addition, connections of the strips are provided at the points indicated by the arrows b, c, d. The arrangement is such that the resulting strip parts, for example f, ä, da, i, between the connection points a and. b have approximately the same lengths and therefore the same electrical resistance values. Since the currents flowing through the strip parts f, g, dz, i are of the same size, they are heated evenly.

Claims (1)

PATENTANSPRUCH: Elektrischer Widerstand aus Gußeisen, der zwischen den Klemmen in mehrere elektrisch parallel geschaltete, mäanderförmige, an ihren Enden miteinander verbundene Streifen unterteilt ist, nach Patent 486243, dadurch gekennzeichnet, daß die mäamderförmigen Streifen auch zwischen den Enden an einer oder mehreren Wendestellen derart miteinander verbunden sind, daß die zwischen den Verbindungsstellen parallel geschalteten Streifenteile annähernd gleiche elektrische Widerstandswerte aufweisen.PATENT CLAIM: Cast iron electrical resistance between the terminals in several meander-shaped, electrically connected in parallel, at their Ends interconnected strip is divided, according to patent 486243, thereby characterized in that the mäamder-shaped strips also between the ends on one or more turning points are connected to one another in such a way that the between the Connection points connected in parallel strip parts approximately the same electrical Have resistance values.
DEA58220D Cast iron electrical resistance Expired DE519258C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA58220D DE519258C (en) Cast iron electrical resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA58220D DE519258C (en) Cast iron electrical resistance

Publications (1)

Publication Number Publication Date
DE519258C true DE519258C (en) 1931-02-26

Family

ID=6941522

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA58220D Expired DE519258C (en) Cast iron electrical resistance

Country Status (1)

Country Link
DE (1) DE519258C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4324733A1 (en) * 1993-07-23 1995-01-26 Abb Patent Gmbh Meandering flat-strip resistance winding

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4324733A1 (en) * 1993-07-23 1995-01-26 Abb Patent Gmbh Meandering flat-strip resistance winding

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