DE403224C - Electrical connection apparatus for medical purposes - Google Patents

Electrical connection apparatus for medical purposes

Info

Publication number
DE403224C
DE403224C DER58123D DER0058123D DE403224C DE 403224 C DE403224 C DE 403224C DE R58123 D DER58123 D DE R58123D DE R0058123 D DER0058123 D DE R0058123D DE 403224 C DE403224 C DE 403224C
Authority
DE
Germany
Prior art keywords
electrical connection
connection apparatus
medical purposes
motor
current
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
DER58123D
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.)
Reiniger Gebbert & Schall A G
Original Assignee
Reiniger Gebbert & Schall A G
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 Reiniger Gebbert & Schall A G filed Critical Reiniger Gebbert & Schall A G
Priority to DER58123D priority Critical patent/DE403224C/en
Application granted granted Critical
Publication of DE403224C publication Critical patent/DE403224C/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/18—Applying electric currents by contact electrodes
    • A61N1/20—Applying electric currents by contact electrodes continuous direct currents

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Description

Elektrischer Anschlußapparat für ärztliche Zwecke. Bei elektrischen Anschlußapparaten für ärztliche Zwecke bedient man sich, um eine erdschlußfreie Gleichstromquelle zur Verfügung zu haben, einer Gleichstromerzeugermaschine, die, wenn als Betriebsstrom Wechselstrom zur Verfügung steht, von einem Wechselstrommotor angetrieben wird. Als W echelstrommotor findet dabei, wegen seines, auch in einem weiten Bereich von Umdrehungszahlen beträchtlichen Anzugsdrehmomentes, zweckmäßig ein Hauptstrommotor Verwendung. Bei Hauptstrommotoren besteht, wie bekannt, die Gefahr, daß sie bei Entlastung leicht durchgehen, wobei im vorliegenden Fall auch die Feldwickelungen der von dem Motor angetriebenen kleinen Dynamomaschine leicht überlastet werden. Auch rufen, eben wegen der starken Änderung der Umdrehungsgeschwindigkeit des Hauptstrommotors mit der Belastung, schon kleine Änderungen der Belastung sehr merkliche, für ärztliche Anwendungen äußerst störende Änderungen der von der angetriebenen Gleichstrommaschine gelieferten Spannung hervor. Um diese Übelstände zu vermeiden, hat man bisher für diesen Zweck größere Maschinen benutzt, als es für die Größenordnung der von der Dynamomaschine zu liefernden Gleichstromstärke und Leistungen erforderlich ist. Große Maschinen sind gegen kleine Belastungsänderungen nicht so empfindlich wie kleine Maschinen. Bei Hauptstrommotoren für Wechselstrom ist es bekannt, die Umdrehungszahl des Ankers durch einen Fliehkraftunterbrecher zu begrenzen, der den Betriebsstrom ausschaltet, sobald eine der Umdrehungszahl des Ankers gesetzte Grenze überschritten wird.Electrical connection apparatus for medical purposes. With electrical Connection apparatus for medical purposes is used to ensure a ground fault-free To have a direct current source available, a direct current generator machine which, if alternating current is available as operating current, from an alternating current motor is driven. As an AC motor, there is, because of it, also in one wide range of revolutions with considerable tightening torque, expedient using a main current motor. In the case of main current motors, as is known, the There is a risk that they will easily go through when the discharge is discharged, although this is also the case in the present case the field windings of the small dynamo driven by the motor lightly become overloaded. Also call, because of the sharp change in the speed of rotation of the main current motor with the load, even small changes in the load a lot noticeable, for medical applications extremely disruptive changes in the driven by the DC machine supplied voltage. To avoid these evils, Larger machines have hitherto been used for this purpose than for the order of magnitude the direct current strength and power to be supplied by the dynamo machine is. Large machines are not as sensitive to small changes in load like little machines. In the case of main current motors for alternating current, it is known that To limit the number of revolutions of the armature by a centrifugal interrupter, which the The operating current switches off as soon as a limit set for the number of revolutions of the armature is exceeded.

Die Erfindung besteht in der Anwendung eines solchen mit einem Fliehkraftunterbrecher versehenen Hauptstrommotors für den Antrieb der Gleichstromerzeugermaschine von Anschlußapparaten für ärztliche Zwecke. Dadurch ist erreicht, daß die von der Dynamomaschine gelieferte Gleichspannung praktisch in Betracht kommende Schwankungen nicht mehr aufweist, daß die Spannung der Dynamomaschine praktisch gleichbleibend ist. Infolgedessen kann sowohl der Motor als auch die Dynamomaschine wesentlich kleiner gewählt werden als bei den bekannten solchen Apparaten, nämlich nur gerade so groß, als es für die geringe, zu liefernde elektrische Leitung und Stromstärke erforderlich ist.The invention consists in the use of such a device with a centrifugal interrupter provided main current motor for driving the DC generator machine of Connection apparatus for medical purposes. This ensures that the dynamo machine supplied DC voltage no longer practically relevant fluctuations has that the voltage of the dynamo is practically constant. Consequently Both the motor and the dynamo can be chosen to be much smaller than with the known such apparatus, namely only just as large as it is for the low electrical power and current strength to be supplied is required.

Claims (1)

PATENTANSPRUCH: Elektrischer Anschlußapparat für ärztliche Zwecke mit einer durch einen Hauptstrommotor für Wechselstrom angetriebenen Gleichstromerzeugermaschine, dadurch gekennzeichnet, daß der Motor in der an sich' bekannten Weise mit einem Fliehkraftunterbrecher versehen ist.Claim: Electrical connection apparatus for medical purposes with a direct current generator machine driven by a main current motor for alternating current, characterized in that the motor is provided with a centrifugal interrupter in the manner known per se.
DER58123D 1923-03-18 1923-03-18 Electrical connection apparatus for medical purposes Expired DE403224C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER58123D DE403224C (en) 1923-03-18 1923-03-18 Electrical connection apparatus for medical purposes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER58123D DE403224C (en) 1923-03-18 1923-03-18 Electrical connection apparatus for medical purposes

Publications (1)

Publication Number Publication Date
DE403224C true DE403224C (en) 1924-09-23

Family

ID=7410712

Family Applications (1)

Application Number Title Priority Date Filing Date
DER58123D Expired DE403224C (en) 1923-03-18 1923-03-18 Electrical connection apparatus for medical purposes

Country Status (1)

Country Link
DE (1) DE403224C (en)

Similar Documents

Publication Publication Date Title
EP0471038A1 (en) Commutator motor.
DE1814387A1 (en) Brushless power generator with exciter auxiliary machine
DE403224C (en) Electrical connection apparatus for medical purposes
DE581716C (en) Small synchronous motor, especially for driving clocks and tariff devices
DE730140C (en) Arrangement for countercompounding a Leonard generator
DE500532C (en) Commutation control method for AC collector motors provided with reversing poles for driving work machines whose torque falls with decreasing speed
DE352583C (en) Electric DC machine for optional operation as a generator for adjustable voltage and as a motor
DE611543C (en) Driving and short-circuit brake circuit for DC vehicles
AT124640B (en) Switching on electrical machines to influence the field excitation depending on the frequency of the armature currents.
AT126773B (en) Device for keeping the voltage of an electrical machine constant.
DE298308C (en)
DE506293C (en) Device to prevent runaway and polarity reversal in compounded electrical machines
AT144274B (en) Direct current generator for adjustable working current strength, in particular for welding purposes.
DE237544C (en)
DE490504C (en) Shunt commutator motor for single and multi-phase alternating current with reversing poles
DE471182C (en) Multi-phase commutator machine with a winding housed in the stand and powered by induction from the armature
DE619770C (en) DC hoist motor equipped with main current or compound winding with automatic strong increase in speed when lifting small loads
DE758297C (en) Method for speed control and braking of three-phase motors
DE278407C (en)
DE410484C (en) Device for exciting rotating magnets or for feeding rotating lines with direct current without the use of slip rings and slip ring brushes
AT43613B (en) Device for regulating alternating current collector machines with shunt or external excitation.
DE559267C (en) Arrangement on single-phase alternating current machines, whose direct current or low-frequency alternating current carrying excitation winding is connected to a direct or alternating current commutator machine
DE750830C (en) Arrangement on DC machines for feeding a welding arc
DE961187C (en) Self-excited compounded alternator
DE572904C (en) Self-excited synchronous machine for single or multi-phase alternating current