WO1981000170A1 - High sensitivity magneto-industance varying proportionally with the value of the magnetic field - Google Patents
High sensitivity magneto-industance varying proportionally with the value of the magnetic field Download PDFInfo
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- WO1981000170A1 WO1981000170A1 PCT/FR1979/000059 FR7900059W WO8100170A1 WO 1981000170 A1 WO1981000170 A1 WO 1981000170A1 FR 7900059 W FR7900059 W FR 7900059W WO 8100170 A1 WO8100170 A1 WO 8100170A1
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- magneto
- inductance
- inductor according
- magnetic field
- magnetic
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- 230000035945 sensitivity Effects 0.000 title description 3
- 239000000956 alloy Substances 0.000 claims abstract description 6
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 6
- 230000035699 permeability Effects 0.000 claims abstract description 6
- 230000002040 relaxant effect Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- 238000005498 polishing Methods 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 230000003534 oscillatory effect Effects 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 7
- 238000004804 winding Methods 0.000 description 5
- 230000010355 oscillation Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- AZUYLZMQTIKGSC-UHFFFAOYSA-N 1-[6-[4-(5-chloro-6-methyl-1H-indazol-4-yl)-5-methyl-3-(1-methylindazol-5-yl)pyrazol-1-yl]-2-azaspiro[3.3]heptan-2-yl]prop-2-en-1-one Chemical compound ClC=1C(=C2C=NNC2=CC=1C)C=1C(=NN(C=1C)C1CC2(CN(C2)C(C=C)=O)C1)C=1C=C2C=NN(C2=CC=1)C AZUYLZMQTIKGSC-UHFFFAOYSA-N 0.000 description 1
- 239000002249 anxiolytic agent Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/14708—Fe-Ni based alloys
- H01F1/14716—Fe-Ni based alloys in the form of sheets
- H01F1/14725—Fe-Ni based alloys in the form of sheets with insulating coating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
Definitions
- These sensors are generally less sensitive and proportional to the magnetic field than over a range.
- the invention also includes a mode of transmission of the information provided by the high-sensitivity magneto-inductance, characterized in that it constitutes one of the elements of an oscillating or relaxing circuit accompanied by any suitable electronic device giving directly on characteristic impedance frequency modulation signals proportional to the magnetic field, the information of which can be transmitted remotely.
- FIG. 1 represents a magneto-inductance according to the invention with a core.
- FIG. 2 represents a magneto-inductor according to the invention with a closed and enveloping armature.
- FIG. 3 represents a magneto-inductance according to the invention with fractional solenoid.
- such a magneto-inductor having magnetic circuits made of Ni 77%, Fe 19%, Mo 4% alloy associated as will be indicated below with a conventional integrated circuit (quadruple gate "Naud” with 2 inputs) mounted as a relaxant generates signals whose frequency varies from 540 Hertz in the absence of an incident field to 860,000 Hertz in the presence of a small magnet, with rigorous proportionality between the frequency and the field over a large intermediate range.
- the inductor winding 1 subjected to the magnetic induction of the field 3 acts as it is' clearly indicated on the four "Nauds" (non-and) 6, 7, 8, and 9 of a conventional electronic integrated circuit mounted as a relaxer and formatter such as an SN 7400 N for example.
- a rectangular signal of frequency proportional to the intensity of field 3 is thus obtained directly at output 10.
- the magneto-inductance 1 undergoes the induction of the magnetic field 3 in parallel on its own distributed capacitance shown in dotted lines at 11.
- This magneto-inductance 1 is mounted on the collector load of the transistor 12 whose base polarized by the resistor 13 as a high frequency potential derivative to ground via the decoupling capacitor 14. 13 'is the reaction resistance of the transmitter.
- the oscillation reaction is carried out by a capacitive reaction between the collector and the emitter of the transistor 12 by the capacitor 15.
- the capacitor 16 has the role of output decoupler for the direct current superimposed on the useful signal.
- the entire circuit is powered by a positive continuous retention with respect to the mass on the line supply 17.
- the optional capacitor 18 may possibly modify the amplitude and the oscillation regime of the assembly.
- This arrangement makes it possible to deliver at output 20 symmetrical rectangular signals of frequency proportional to the magnetic field, of amplitude and of constant individual duration. This allows according to the invention to directly couple the magneto-inductance to a galvanometer.
Abstract
Magneto-inductance comprised of a coil (1) having a small number of turns on one or several thin strips (2, 4, 5) insulated between each other, of a high magnetic permeability alloy, combined to an oscillatory electronic device of which the frequency is proportional to the incident magnetic field.
Description
MAGNETO-INDUCTANCE A HAUTE SENSIBILITE A VARIATION PROPORTIONNELLE A LA VALEUR DU CHAMP MAGNETIQUEHIGH SENSITIVITY MAGNETO-INDUCTANCE WITH PROPORTIONAL VARIATION IN MAGNETIC FIELD VALUE
Il est connu de réaliser des capteurs donnant une information fonction de l'action de la variation de l'effet d'un champ magnétique sur un solénoide.It is known to produce sensors giving information which is a function of the action of the variation of the effect of a magnetic field on a solenoid.
Ces capteurs sont en général peu sensibles et proportionnels au champ magnétique que sur une faioie plage.These sensors are generally less sensitive and proportional to the magnetic field than over a range.
L'invention, objet du présent brevet, remédie à ces inconvénients.The invention which is the subject of this patent overcomes these drawbacks.
Elle est caractérisée en ce que l'inductance est un solénoîde d'une dizaine à quelques centaines de spires bobiné sur un circuit magnétique, ouvert ou fermé, formé de une ou plusieurs tôles de faible épaisseur, isolées les unes des autres, d'un alliage à très haute perméabilité magnétique. Suivant une autre caractéristique de l'invention, la masse du circuit magnétique est inférieure à 50 centigrammes. Selon l'invention et pour certaines applications une partie du circuit magnétique enveloppe le solénoîde afin d'être couplé par son champ externe.It is characterized in that the inductance is a solenoid of ten to a few hundred turns wound on a magnetic circuit, open or closed, formed of one or more thin sheets, isolated from each other, of a alloy with very high magnetic permeability. According to another characteristic of the invention, the mass of the magnetic circuit is less than 50 centigrams. According to the invention and for certain applications, part of the magnetic circuit envelops the solenoid so as to be coupled by its external field.
L'invention comprend également un mode de transmission de l'information fournie par la magnéto-inductance à haute sensibilité caractérisé en ce qu'elle constitue un des éléments d'un circuit oscillant ou relaxateur accompagné de tout dispositif électronique approprié donnant une fréquence proportionnelle au champ magnétique.The invention also includes a mode of transmission of the information provided by the high-sensitivity magneto-inductance, characterized in that it constitutes one of the elements of an oscillating or relaxing circuit accompanied by any suitable electronic device giving a frequency proportional to the magnetic field.
L'invention comprend encore un mode de transmission de l'information fournie par la magnéto-inductance à haute sensibilité caractérisé en ce qu'elle constitue un des éléments d'un circuit oscillant ou relaxateur accompagné de tout dispositif électronique approprié donnant directement sur impédance caractéristique des signaux en modulation de fréquence proportionnelle au champ magnétique dont l'information peut être transmise à distance.The invention also includes a mode of transmission of the information provided by the high-sensitivity magneto-inductance, characterized in that it constitutes one of the elements of an oscillating or relaxing circuit accompanied by any suitable electronic device giving directly on characteristic impedance frequency modulation signals proportional to the magnetic field, the information of which can be transmitted remotely.
D'autres caractéristiques de l'invention apparaîtront ou seront précisées au cours de la description qui suit, donnée uniquement à titre d'exemple de réalisation.Other characteristics of the invention will appear or will be clarified during the description which follows, given solely by way of example of embodiment.
A la planche unique, la figure 1 représente une magnéto-inductance selon l'invention à noyau.In the single plate, FIG. 1 represents a magneto-inductance according to the invention with a core.
La figure 2 représente une magnéto-inductance selon l'invention à armature fermée et enrobante.
La figure 3 représente une magnéto-inductance selon l'invention à solénoîde fractionné.FIG. 2 represents a magneto-inductor according to the invention with a closed and enveloping armature. FIG. 3 represents a magneto-inductance according to the invention with fractional solenoid.
La figure 4 représente une magnéto-inductance selon l'invention associée avec un circuit intégré. La figure 5 représente l'association du magnéto-inductance selon l'invention avec un transistor oscillateur base à la masse. La figure 6 représente une magnéto-inductance avec un minimum d'éléments délivrant des signaux de sortie rectangulaires d'amplitude et de durée constante de fréquence proportionnelle au champ magnétique.FIG. 4 represents a magneto-inductance according to the invention associated with an integrated circuit. FIG. 5 represents the association of the magneto-inductance according to the invention with an earth-based oscillator transistor. FIG. 6 represents a magneto-inductance with a minimum of elements delivering rectangular output signals of amplitude and of constant duration of frequency proportional to the magnetic field.
La figure 7 représente une magnéto-inductance selon l'invention dans le champ d'un électro aimant.FIG. 7 represents a magneto-inductance according to the invention in the field of an electromagnet.
La figure 8 représente une magnéto- induciance selon l'invention associée à une diode tunnel oscillatrice. A la figure (1), le solénoîde 1 est bobiné sur la tôle plate 2 mince et à haute perméabilité. Le nombre de tours du fil peut varier d'une dizaine à quelques centaines de spires selon les dimensions et la fréquence désirée.FIG. 8 represents a magneto-inductance according to the invention associated with an oscillating tunnel diode. In Figure (1), the solenoid 1 is wound on the thin flat sheet 2 with high permeability. The number of turns of the wire can vary from ten to a few hundred turns depending on the dimensions and the desired frequency.
Le champ magnétique incident H, repéré en 3 peut provenir d'un aimant, sa variation résultant alors d'un déplacement relatif, ou d'un électro aimant sa variation pouvant alors provenir d'un déplacement ou d'une variation du courant. Le noyau 2 peut être une tδle unique extramince à haute perméabilité ou plusieurs tôles de caractéristiques semblables empilées et isolées entre elles. Selon l'invention, le noyau ou circuit magnétique en tôles très minces des magnéto-inductances doit être formé d'un alliage compris dans les compositions suivantes :The incident magnetic field H, identified in 3 can come from a magnet, its variation then resulting from a relative displacement, or from an electromagnet its variation can then come from a displacement or a variation of the current. The core 2 can be a single sheet extraminned with high permeability or several sheets of similar characteristics stacked and insulated from one another. According to the invention, the very thin metal core or magnetic circuit of the magneto-inductors must be formed from an alloy comprised in the following compositions:
Mini MaxiMini Maxi
Ni 35 % 80 % Fe 10 % 65 % Cu 0 15 % Mo 0 5 % Mn 0 1 % Cr 0 5 %Ni 35% 80% Fe 10% 65% Cu 0 15% Mo 0 5% Mn 0 1% Cr 0 5%
A la figure (2) le bobinage inducteur 1 est bobiné sur le noyau 2 élément d'un circuit magnétique fermé. Ce solénoîde 1 est entre deux autres circuits magnétiques 4 et 5 qui lui sont accolés
directement sur ses faces extérieures et se ferment sur le circuit magnétique 2. Les pôles instantanés N et S du champ magnétique extérieur 3 agissent vers les extrémités du solénoîde 1.In Figure (2) the inductor winding 1 is wound on the core 2 element of a closed magnetic circuit. This solenoid 1 is between two other magnetic circuits 4 and 5 which are attached to it directly on its external faces and close on the magnetic circuit 2. The instantaneous poles N and S of the external magnetic field 3 act towards the ends of the solenoid 1.
A titre d'exemple une telle magnéto-inductance ayant des circuits magnétiques en alliage Ni 77 %, Fe. 19 %, Mo 4% associé comme il sera indiqué plus loin à un circuit intégré classique (quadruple porte "Naud" à 2 entrées) monté en relaxateur engendre des signaux dont la fréquence varie de 540 Hertz en l'absence de champ incident à 860 000 Hertz en présence d'un petit aimant, avec une rigoureuse proportionnalité entre la fréquence et le champ sur une grande plage intermédiaire.By way of example, such a magneto-inductor having magnetic circuits made of Ni 77%, Fe 19%, Mo 4% alloy associated as will be indicated below with a conventional integrated circuit (quadruple gate "Naud" with 2 inputs) mounted as a relaxant generates signals whose frequency varies from 540 Hertz in the absence of an incident field to 860,000 Hertz in the presence of a small magnet, with rigorous proportionality between the frequency and the field over a large intermediate range.
A la figure (3) le bobinage inducteur 1 est fractionné en plusieurs éléments. : 3 dans l'exemple 1a 1b, 1b 1c, 1c 1d, sur le même, circuit magnétique 2 e.t soumis au même champ magnétique incident 3. Ceci afin de : soit diminuer la capacité répartie, soit de faciliter l'entrée, en oscillation de montages oscillateurs tels que "Hartley", "Clapp", ect... ; soit pour permettre une adaptation d'impédance ; soit de permettre la constitution de filtres électromagnétiques simples ou complexes, actifs ou passifs. A la figure (4) la magnéto-induetance est associée directement à un circuit intégré. Le bobinage inducteur 1 soumis à l'induction magnétique du champ 3 agit comme il est' clairement indiqué sur les quatre "Nauds" (non-et) 6, 7, 8, et 9 d'un circuit intégré électronique classique monté en relaxateur et metteur en forme tel qu'un SN 7400 N par exemple. On obtient ainsi directement en sortie 10 un signal rectangulaire de fréquence proportionnelle à l'intensité duchamp 3.In Figure (3) the field winding 1 is divided into several elements. : 3 in Example 1a 1b, 1b 1c, 1c 1d, on the same, magnetic circuit 2 and subjected to the same incident magnetic field 3. This in order to: either decrease the distributed capacity, or facilitate the entry into oscillation oscillator mounts such as "Hartley", "Clapp", ect ...; either to allow impedance matching; or to allow the constitution of simple or complex electromagnetic filters, active or passive. In Figure (4) the magneto-inductance is associated directly with an integrated circuit. The inductor winding 1 subjected to the magnetic induction of the field 3 acts as it is' clearly indicated on the four "Nauds" (non-and) 6, 7, 8, and 9 of a conventional electronic integrated circuit mounted as a relaxer and formatter such as an SN 7400 N for example. A rectangular signal of frequency proportional to the intensity of field 3 is thus obtained directly at output 10.
A la figure (5) la magnéto-inductance 1 subit l'induction du champ magnétique 3 en parallèle sur sapropre capacité répartie figurée en pointillé en 11. Cette magnéto-inductance 1 est montée en charge de collecteur du transistor 12 dont la base polarisée par la résistance 13 ason potentiel Haute Fréquence dérivé à la masse par l'intermédiaire du condensateur de découplage 14 . 13' est la résistance de réaction de l'émetteur. La réaction de l'oscillation s'effectue par une réaction capacitive entre le collecteur et l'émetteur du transistor 12 par le condensateur 15. Le condensateur 16 a le rôle de découpleur de sortie pour le courant continu superposé au signal utile. Lensemble du circuit est alimenté par une tention continue positive par rapport à la masse sur la ligne
d'alimentation 17. Le condensateur 18, facultatif, peut éventuellement modifier l'amplitude et le régime d'oscillation de l'ensemble. La sortie 19 délivre une oscillation sinusoïdale dont la fréquence est proportionnelle au champ magnétique 3. Suivant l'invention le signaldélivré 19 est appliqué : soit sur flanc de courbe d'un circuit accordé, soit à un filtre passe-haut ou passe-bas, soit à un circuit discriminateur de fréquence, pour délivrer un signal d'amplitude proportionnelle ou inversement proportionnelle à la valeur du champ 3.In FIG. (5) the magneto-inductance 1 undergoes the induction of the magnetic field 3 in parallel on its own distributed capacitance shown in dotted lines at 11. This magneto-inductance 1 is mounted on the collector load of the transistor 12 whose base polarized by the resistor 13 as a high frequency potential derivative to ground via the decoupling capacitor 14. 13 'is the reaction resistance of the transmitter. The oscillation reaction is carried out by a capacitive reaction between the collector and the emitter of the transistor 12 by the capacitor 15. The capacitor 16 has the role of output decoupler for the direct current superimposed on the useful signal. The entire circuit is powered by a positive continuous retention with respect to the mass on the line supply 17. The optional capacitor 18 may possibly modify the amplitude and the oscillation regime of the assembly. The output 19 delivers a sinusoidal oscillation, the frequency of which is proportional to the magnetic field 3. According to the invention, the delivered signal 19 is applied: either to the edge of the curve of a tuned circuit, or to a high-pass or low-pass filter, either to a frequency discriminator circuit, to deliver a signal of amplitude proportional or inversely proportional to the value of field 3.
Suivant l'invention de telles variation d'amplitude sont appliquées à un système tout ou rien, genre "Trigger de Schnitt" par exemple, pour provoquer un basculement précis à une amplitude donnée, ce qui transforme la magnéto-inductance selon l'invention en détecteur tout ou rien et à seuils.According to the invention, such amplitude variation are applied to an all-or-nothing system, such as the "Schnitt Trigger" for example, to cause a precise tilting at a given amplitude, which transforms the magneto-inductance according to the invention into all or nothing and threshold detector.
A la figure (6) la magnéto-inductance 1 soumise à l'induction du champ magnétique 3 est associée au même circuit intégré qu'à la figure (4), mais avec en plus la résistance 21 entre les deux dernières portes et le condensateur 22, 15' est le condensateur de rétro-couplage.In FIG. (6) the magneto-inductance 1 subjected to the induction of the magnetic field 3 is associated with the same integrated circuit as in FIG. (4), but with in addition the resistor 21 between the last two gates and the capacitor 22, 15 'is the back-coupling capacitor.
Ce montage permet de délivrer en sortie 20 des signaux rectangulaires symétriques de fréquence proportionnelle au champ magnétique, d'amplitude et de durée individuelles constantes. Ce qui permet suivant l'invention de coupler directement la magnéto-inductance à un galvanomètre.This arrangement makes it possible to deliver at output 20 symmetrical rectangular signals of frequency proportional to the magnetic field, of amplitude and of constant individual duration. This allows according to the invention to directly couple the magneto-inductance to a galvanometer.
Selon l'invention pour certaines applications la magnétisation de la magnéto-inductance 1 n'estpas nulle en l'absence de champ inducteur 3 mais possède une magnétisation préréglée par action d'un champ magnétique continu auxiliaire constant et réglable. A la figure (7) la magnéto-inductance 1 est montée suivant l'invention dans l'entrefer d'un électro aimant 23 comportant ou non une armature.According to the invention for certain applications, the magnetization of the magneto-inductance 1 is not zero in the absence of an inductive field 3 but has a magnetization preset by the action of a constant and adjustable auxiliary continuous magnetic field. In Figure (7) the magneto-inductance 1 is mounted according to the invention in the air gap of an electromagnet 23 with or without a frame.
Ce montage selon l'invention permet la réalisation d'un ensemble compact de "Wobulation" électro-magnétique à très hautes performances, élément de couplage assurant le transfert courant-inductance ou courant-fréquence à très haute sensibilité.This arrangement according to the invention allows the production of a compact set of very high performance electromagnetic "Wobulation", coupling element ensuring the current-inductance or current-frequency transfer at very high sensitivity.
A la figure (8) la magnéto-inductance 1 à bobinage fractionné selon l'invention décrite en figure 3 est associée suivant l'invention à une diode tunnel oscillatrice 23. Le circuit 11 en
pointillé représente la capacité répartie du bobinage 25, 26 est un pont abaisseur d'impédance pour la source d' alimentation 28 24 est un condensateur de découplage d' alimentation. 29 est la sortie du signal à modulation de fréquence à tensionplus élevée que celle de la diode tunnel 23. 27 est le point commun.In FIG. (8) the magneto-inductance 1 with fractional winding according to the invention described in FIG. 3 is associated according to the invention with an oscillating tunnel diode 23. The circuit 11 in dotted line represents the distributed capacity of the winding 25, 26 is a step-down bridge of impedance for the power source 28 24 is a power decoupling capacitor. 29 is the output of the frequency modulation signal at a higher voltage than that of the tunnel diode 23. 27 is the common point.
L' ensemble selon l ' invention, de dimensions très réduites constitue un détecteur de proximité à modulation de fréquence pouvant être réglé directement sur 10,7 MHz valeur standard de la fréquence intermédiaire FM de la radio diffusion. Ce qui présente des avantages pratiques très importants .
The assembly according to the invention, of very reduced dimensions constitutes a proximity detector with frequency modulation which can be adjusted directly to 10.7 MHz standard value of the intermediate frequency FM of radio broadcasting. This has very important practical advantages.
Claims
1. Magnéto-inductance caractérisée en ce que l'inductance est un solénoïde d'une dizaine à quelques centaines de spires bobiné sur un circuit magnétique ouvert ou fermé formé de une ou plusieurs tôles de faible épaisseur isolées les une des autres d'un alliage à très haute perméabilité magnétique, l'ensemble constituant un élément électro-magnétique présentant de très fortes variations d'inductance lorsque celui-ci est soumis à la variation d'un champ magnétique environnant.1. Magneto-inductance characterized in that the inductance is a solenoid of ten to a few hundred turns wound on an open or closed magnetic circuit formed of one or more thin sheets isolated from one another of an alloy with very high magnetic permeability, the assembly constituting an electromagnetic element having very large variations in inductance when the latter is subjected to the variation of a surrounding magnetic field.
2. Magnéto-inductance selon la revendication 1 caractérisée en ce que la masse totale du circuit magnétique est inférieure à cinquante centigrammes.2. Magneto-inductor according to claim 1 characterized in that the total mass of the magnetic circuit is less than fifty centigrams.
3. Magnéto-inductance selon la revendication 1 caractérisée en ce qu'une partie du circuit magnétique enveloppe le solénoïde.3. Magneto-inductor according to claim 1 characterized in that a part of the magnetic circuit envelops the solenoid.
4. Magnéto-inductance selon la revendication 1 caractérisée en ce que l'alliage à haute perméabilité du circuit magnétique a les compositions suivantes :4. Magneto-inductance according to claim 1 characterized in that the alloy with high permeability of the magnetic circuit has the following compositions:
Mini MaxiMini Maxi
Ni 35 % 80 %Ni 35% 80%
Fe 10 % 65 %Fe 10% 65%
Cu 0 15 %Cu 0 15%
Cr 0 5 %Cr 0 5%
Mo 0 5 %MB 0 5%
Mn 0 1 %Mn 0 1%
5. Magnéto-inductance selon la revendication 1 caractérisée en ce qu'elle constitue un des éléments d'un circuit oscillant ou relaxateur accompagné de tout dispositif électronique approprié donnant une fréquence proportionnelle au champ magnétique extérieur.5. Magneto-inductor according to claim 1 characterized in that it constitutes one of the elements of an oscillating or relaxing circuit accompanied by any suitable electronic device giving a frequency proportional to the external magnetic field.
6. Magnéto-inductance selon la revendication 1 caractérisée en ce qu'elle constitue un des éléments d'un circuit oscillant ou relaxateur accompagné de tout dispositif électronique approprié donnant directement sur impédance caractéristique des signaux en modulation de fréquence proportionnelle au champ magnétique dont l'information peut être transmise à distance.
6. Magneto-inductor according to claim 1 characterized in that it constitutes one of the elements of an oscillating or relaxing circuit accompanied by any suitable electronic device giving directly on characteristic impedance of the signals in frequency modulation proportional to the magnetic field whose information can be transmitted remotely.
7. Magnéto-inductance selon la revendication 1 caractérisée en ce que le solénoîde est divisé en plusieurs éléments.7. Magneto-inductor according to claim 1 characterized in that the solenoid is divided into several elements.
8. Magnéto-inductance selon la revendication 1 caractérisée en ce qu'elle possède un champ auxiliaire de polorisation.8. Magneto-inductor according to claim 1 characterized in that it has an auxiliary polishing field.
9. Magnéto-inductance selon la revendication 1 caractérisée en ce qu'elle est fractionnée selon la revendication 7 et associée à un diode tunnel oscillatrice.9. Magneto-inductor according to claim 1 characterized in that it is fractionated according to claim 7 and associated with an oscillating tunnel diode.
10. Magnéto-inductance selon la revendication 1 caractérisée en ce qu' elle est soumise au champ d'un électro-aimant alimenté par un courant régulé ou non, dont elle est informe .
10. Magneto-inductor according to claim 1 characterized in that it is subjected to the field of an electromagnet supplied by a regulated or unregulated current, of which it is informed.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50099779A JPS56500791A (en) | 1979-07-06 | 1979-07-06 | |
| PCT/FR1979/000059 WO1981000170A1 (en) | 1979-07-06 | 1979-07-06 | High sensitivity magneto-industance varying proportionally with the value of the magnetic field |
| EP19790900711 EP0031322A1 (en) | 1979-07-06 | 1981-01-26 | High sensitivity magneto-inductance varying proportionally with the value of the magnetic field |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| WOFR79/00059 | 1979-07-06 | ||
| PCT/FR1979/000059 WO1981000170A1 (en) | 1979-07-06 | 1979-07-06 | High sensitivity magneto-industance varying proportionally with the value of the magnetic field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1981000170A1 true WO1981000170A1 (en) | 1981-01-22 |
Family
ID=9220410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR1979/000059 WO1981000170A1 (en) | 1979-07-06 | 1979-07-06 | High sensitivity magneto-industance varying proportionally with the value of the magnetic field |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0031322A1 (en) |
| JP (1) | JPS56500791A (en) |
| WO (1) | WO1981000170A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE922114C (en) * | 1943-01-30 | 1955-01-10 | Bosch Gmbh Robert | High frequency choke coil with divided iron core |
| US3037176A (en) * | 1959-12-30 | 1962-05-29 | Thorn Electrical Ind Ltd | Electrical inductors |
| US3871927A (en) * | 1971-10-13 | 1975-03-18 | Elect & Magn Alloys Res Inst | Process for producing a high-permeability alloy for magnetic recording-reproducing heads |
| DE2405019A1 (en) * | 1974-02-02 | 1975-08-14 | Slade Components Ltd | Choke for fluorescent lamp holder - consists of coil carrying core of laminations of different width and complementary frame sections |
-
1979
- 1979-07-06 JP JP50099779A patent/JPS56500791A/ja active Pending
- 1979-07-06 WO PCT/FR1979/000059 patent/WO1981000170A1/en unknown
-
1981
- 1981-01-26 EP EP19790900711 patent/EP0031322A1/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE922114C (en) * | 1943-01-30 | 1955-01-10 | Bosch Gmbh Robert | High frequency choke coil with divided iron core |
| US3037176A (en) * | 1959-12-30 | 1962-05-29 | Thorn Electrical Ind Ltd | Electrical inductors |
| US3871927A (en) * | 1971-10-13 | 1975-03-18 | Elect & Magn Alloys Res Inst | Process for producing a high-permeability alloy for magnetic recording-reproducing heads |
| DE2405019A1 (en) * | 1974-02-02 | 1975-08-14 | Slade Components Ltd | Choke for fluorescent lamp holder - consists of coil carrying core of laminations of different width and complementary frame sections |
Non-Patent Citations (2)
| Title |
|---|
| IBM Technical Disclosure Bulletin, Volume 5-8, No. 5, publie en Octobre 1960, (Armonk, New York, US) . H.C. KUNTZLEMAN et al. "A D.C. controlled magnetic oscillator" voir page 52. * |
| IEEE Transactions of Magnetics, Vol. MAG-10, No. 2, publie en Juin 1974 (New York, US) SVESTKA et al. "The effect of manganese on the magnitic properties of mumetal alloy", pages 139-140 voir page 139, colonne de gauche, ligne 1 a page 140. colone de gauche, ligne 9. * |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56500791A (en) | 1981-06-11 |
| EP0031322A1 (en) | 1981-07-08 |
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