DE157936A

DE157936A -

Info

Publication number: DE157936A
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

^Patentschrift^ Patent specification

KLASSE 21 e. /CLASS 21 e. /

JULES RICHARD in PARIS.JULES RICHARD in PARIS.

Galvanometer. Patentiert im Deutschen Reiche vom 3. Juli 1904 ab. Galvanometer. Patented in the German Empire on July 3, 1904.

Die vorliegende Erfindung betrifft ein Galvanometer, bei welchem die Stärke des Stromes durch Beobachtung oder Registrierung der Winkelablenkung festgestellt wird, welche durch die Wirkung des Stromes ein beweglicher Anker erleidet, der aus einem Drahtrahmen besteht. Die beiden Enden des Drahtes. sind mit den beiden Polen der Elektrizitätsquelle verbunden und der AnkerThe present invention relates to a galvanometer, in which the strength of the current by observing or registering the angular deflection it is determined which a movable armature made of a wire frame suffers from the effect of the current consists. The two ends of the wire. are with the two poles of the electricity source connected and the anchor

ίο dreht sich in dem von einem oder mehreren permanenten Magneten erzeugten magnetischen Feld.ίο turns in that of one or more permanent magnet generated magnetic field.

Die die Erfindung bildende Neuerung an derartigen Galvanometern hat den Zweck, die Empfindlichkeit des Instrumentes zu vergrößern, indem das drehende Kräftepaar verstärkt wird, d. h. daß den elektromagnetischen Einwirkungen des Stromes die Möglichkeit gegeben ist, sich mit konstanter maximaler Stärke zu äußern, wobei der wirksame Hebelarm wesentlich größer sein kann als bei den bekannten Instrumenten.The invention forming the innovation of such galvanometers has the purpose that To increase the sensitivity of the instrument by strengthening the rotating couple will, d. H. that the electromagnetic effects of the current the possibility is given to express itself with constant maximum strength, with the effective lever arm can be much larger than the known instruments.

Dieses Resultat wird dadurch erreicht, daß in einem gleichförmigen magnetischen Felde zwei der Seiten einer galvanometrischen Wicklung drehbar angeordnet sind, deren sämtliche Teile außerdem exzentrisch in bezug auf die Drehungsachse liegen, so daß die Stabilität des beweglichen Ankers eine größere ist.This result is achieved by being in a uniform magnetic field two of the sides of a galvanometric winding are rotatably arranged, all of which Parts are also eccentric with respect to the axis of rotation, so that the stability of the movable armature is a larger one.

Auf der Zeichnung zeigt Fig. 1 das Galvanometer in Vorderansicht, Fig. 2 in Seitenansicht, zum Teil im Schnitt, Fig. 3 einen Teil eines der Träger der Drehachse im Schnitt. Fig. 4, 5 und 6 zeigen in Vorderansicht bezw. Seitenansicht und Oberansicht die rahmenförmige galvanometrische Wicklung. In the drawing, Fig. 1 shows the galvanometer in a front view, Fig. 2 in a side view, partly in section, FIG. 3 a part of one of the supports of the axis of rotation in section. Figs. 4, 5 and 6 show in front view respectively Side view and top view of the frame-shaped galvanometric winding.

Das feststehende Magnetsystem des in der Zeichnung dargestellten Galvanometers besteht aus den beiden Magneten α und b, die gleichen Querschnitt, gleiche Größe und demzufolge gleiches Gewicht besitzen.The fixed magnet system of the galvanometer shown in the drawing consists of the two magnets α and b, which have the same cross-section, the same size and consequently the same weight.

Die Polschuhe dieser Magnete sind zylindrisch und konzentrisch, die vom Magneten α sind konkav, die von b konvex gebogen.The pole pieces of these magnets are cylindrical and concentric, those of the magnet α are concave, those of b are convex.

Der Zwischenraum zwischen den beiden Oberflächen der Magnete bildet zwei gleichförmige magnetische, sehr starke Felder, in' denen sich die beiden wirksamen Flächen der galvanometrischen Spule c bewegen, die von einem als Dämpfer wirkenden Rahmen aus sehr gut leitendem Metall, z. B. elektrolytisches Kupfer, Silber usw., getragen wird.The space between the two surfaces of the magnets forms two uniform magnetic, very strong fields, in which the two effective surfaces of the galvanometric coil c move, which are supported by a frame made of very conductive metal, e.g. B. electrolytic copper, silver, etc. is worn.

Dieser in den Fig. 4, 5 und 6 in größerem Maßstabe dargestellte bewegliche Anker ist aus zwei Teilen d d^l gebildet, von denen jeder aus einem einzigen Metallstreifen besteht und die miteinander unter einem bestimmten Winkel verbunden sind. Auf den mittleren Teil jedes Streifens, der wie ein Teil der Oberfläche eines Zylinders ausgebaucht ist, ist die galvanometrische Spule c gewickelt, deren beide andere Seiten wie Sehnen der Umfange der Stirnflächen des Zylinders verlaufen.This movable armature, shown on a larger scale in FIGS. 4, 5 and 6, is formed from two parts dd ^l , each of which consists of a single metal strip and which are connected to one another at a certain angle. On the central part of each strip, which bulges out like part of the surface of a cylinder, the galvanometric coil c is wound, the other two sides of which run like chords of the circumference of the end faces of the cylinder.

Der Anker ist, wie aus der Zeichnung ersichtlich, exzentrisch in bezug auf die Drehungsachse angeordnet, die mit der AchseAs can be seen from the drawing, the anchor is eccentric with respect to the Axis of rotation arranged to coincide with the axis

Claims

the cylinder collapses, d. H. the area in which the winding is attached goes not through the axis of rotation.

As a result of the arrangement of the magnetic field and those moving in this field Coil, the electromagnetic force that moves the armature acts in constant strength on both sides of the armature winding at the same time. The eccentric mass of the armature, which balances the pointer weight, also contributes to the stability of the measuring device. The axis of rotation e of large cross-section also serves to connect the Front sides of the frame and reduction of its electrical resistance and thus to increase its damping capacity. This effect can, by the way, if it is for Is deemed useful, even more by adding 'cross pieces, which provide good conductivity like electrolytic copper, silver, etc. are reinforced.

The axis e (Fig. 3) ends in two pins / which rotate in sockets g supported by springs h , in order to avoid breakage of the pins during transport and assembly.

The two ends of the galvanometric coil are connected to two spiral springs i , which serve to supply the current and to compensate for the electromagnetic effect.

The axis of the armature carries either a pointer, which is in front of a graduation if it is a reading instrument, or an in a pen-ended pen if it is a recorder.

In the example shown in the drawing, the needle j is fastened with a pin to a piece k which rotates with the axis of rotation e. This needle carries a spring / whose. Pressure on the cylinder m can be regulated, depending on the vertical, horizontal or inclined position of the apparatus.

The regulation is effected by turning the screw η which presses against one end of the needle.

The wire forming the galvanometric frame has different thicknesses, depending after the instrument is to be used as a voltmeter or ammeter.

In the former case, one of the maximum voltage to be measured is fed into the circuit dependent resistor switched on; in the second case it becomes shunted switched on, the strength of which changes with the maximum current strength to be measured.

The magnetic field created by combining two magnets with concentric arranged pole pieces can also be used for instruments other than measuring instruments, ζ. B. for relays, etc., use.

Since the anchor is completely in equilibrium, the instrument can as well be placed horizontally rather than vertically.

Ρλίέντ claim:

Galvanometer, characterized in that the pole pieces of two magnets of the same cross-section and the same size and consequently the same magnetic strength arranged concentrically to one another are, so that a uniform double magnetic field arises in which two sides of a rotating armature move from one to a frame consists of a coil wound in a V-shape.

1 sheet of drawings.

Berlin, printed in the Reichsduckerei.