DE525633C - Variable resistor for electric motors, especially for dental machines - Google Patents

Variable resistor for electric motors, especially for dental machines

Info

Publication number
DE525633C
DE525633C DER65514D DER0065514D DE525633C DE 525633 C DE525633 C DE 525633C DE R65514 D DER65514 D DE R65514D DE R0065514 D DER0065514 D DE R0065514D DE 525633 C DE525633 C DE 525633C
Authority
DE
Germany
Prior art keywords
electric motors
variable resistor
machines
dental machines
dental
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
DER65514D
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.)
Individual
Original Assignee
Individual
Publication date
Priority to DER65514D priority Critical patent/DE525633C/en
Application granted granted Critical
Publication of DE525633C publication Critical patent/DE525633C/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P4/00—Arrangements specially adapted for regulating or controlling the speed or torque of electric motors that can be connected to two or more different electric power supplies

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor And Converter Starters (AREA)

Description

Regelwiderstand für Elektromotoren, insbesondere für zahnärztliche Maschinen Es ist bekannt, bei elektrischen Motoren Umschalter vorzusehen, um den Motor sowohl für Gleichstrom als auch Wechselstrom verwenden zu können.Variable resistor for electric motors, especially for dental Machines It is known to provide changeover switches in electric motors to the To be able to use the motor for both direct current and alternating current.

Auch hat man bereits bei Kommutatormaschinen Reihen- und Parallelschaltung der Erregerwicklungen vorgesehen, je nachdem der Motor mit Gleich- oder Wechselstrom betrieben werden soll.Series and parallel connections are also already used for commutator machines the excitation windings provided, depending on the motor with direct or alternating current should be operated.

Sämtliche bekannten Einrichtungen haben jedoch den Nachteil, daß sich bei Veränderung der Stromart auch die Umlaufgeschwindigkeit verändert.However, all known devices have the disadvantage that changing the type of current also changes the speed of rotation.

Dieser Mangel soll gemäß der Erfindung dadurch vermieden werden, daß der dem Anker parallel geschaltete Widerstand für Gleich- und Wechselstrombetrieb verschiedene Anzapfstellen besitzt, die nach Bedarf derart an die Kontaktstellen angeschlossen werden, daß unabhängig von der Stromart die betriebsmäßig erforderlichen Geschwindigkeitsstufen gleichbleiben.This deficiency is to be avoided according to the invention in that the resistance connected in parallel to the armature for direct and alternating current operation has different tapping points, which as required in such a way to the contact points be connected that regardless of the type of current, the operationally required Speed levels remain the same.

Bei dem in der Zeichnung beispielsweise dargestellten Regler besitzt der dem AnkerA parallel zu schaltende Widerstand W Anzapfstellen i, 2, 3 und q. sowie i', 2', 3' und 4.', von denen die ersteren für Wechselstrom, die letzteren für Gleichstrombetrieb mit den Stufenkontakten 6, 7, 8 und 9 über Leiter i i, 12, 13 und i¢ verbunden werden. Der Kontakt io des Geschwindigkeitsreglers ist über Leiter 15 mit dem Ende 5 des Widerstandes verbunden.In the controller shown in the drawing, for example, the resistor W to be connected in parallel with the armature A has taps i, 2, 3 and q. and i ', 2', 3 'and 4.', of which the former for alternating current and the latter for direct current operation are connected to the step contacts 6, 7, 8 and 9 via conductors ii, 12, 13 and i ¢. The contact io of the speed controller is connected to the end 5 of the resistor via conductor 1 5.

Legt man dagegen die Enden der Leiter i i bis 14, wie strichpunktiert angedeutet, auf die Anzapfstellen i' bis q.' um, dann gibt der Motor für Gleichstrombetrieb die gleichen Drehgeschwindigkeiten wie bei Wechselstrom.If, on the other hand, the ends of the conductors i i to 14 are placed, as shown in dash-dotted lines indicated on the taps i 'to q.' um, then the motor gives for DC operation the same rotational speeds as with alternating current.

Claims (1)

PATRNTAPTSPRUCfi: Regelwiderstand für Elektromotoren, insbesondere für zahnärztliche Maschinen, dadurch gekennzeichnet, daß der dem Anker parallel geschaltete Widerstand für Gleichstrom- und Wechselstrombetrieb verschiedene Anzapfstellen besitzt, die nach Bedarf derart an die Kontaktstellen gelegt werden, daß unabhängig von der Stromart diebetriebsmäßig erforderlichen Geschwindigkeitsstufen gleichbleiben.PATRNTAPTSPRUCfi: rheostat for electric motors, in particular for dental machines, characterized in that the armature is parallel Switched resistor for direct current and alternating current operation, different taps possesses, which are placed on the contact points as required in such a way that independent of the type of current, the operationally required speed levels remain the same.
DER65514D Variable resistor for electric motors, especially for dental machines Expired DE525633C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER65514D DE525633C (en) Variable resistor for electric motors, especially for dental machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER65514D DE525633C (en) Variable resistor for electric motors, especially for dental machines

Publications (1)

Publication Number Publication Date
DE525633C true DE525633C (en) 1931-05-28

Family

ID=7412647

Family Applications (1)

Application Number Title Priority Date Filing Date
DER65514D Expired DE525633C (en) Variable resistor for electric motors, especially for dental machines

Country Status (1)

Country Link
DE (1) DE525633C (en)

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