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The Lavet-type stepping motor has widespread use as a drive in electro-mechanical clocks and is a special kind of single-phase stepping motor. Both analog and stepped-movement quartz clocks use the Lavet-type stepping motor (see Quartz clock). Through miniaturization, it can be used in wristwatches and requires very little power, making a battery last for many years. The French engineer Marius Lavet is known as the inventor for this kind of drives and described it in 1936 in his patent application FR823395. Movement of the common two step Lavet motor:

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  • El motor pas a pas tipus Lavet té un ús generalitzat com a accionament en rellotges electromecànics i és un tipus especial de motor pas a pas monofàsic. Tant els rellotges de quars analògics com els de moviment esglaonat utilitzen el motor pas a pas tipus Lavet (vegeu Rellotge de quars ). Mitjançant la miniaturització, es pot utilitzar en rellotges de polsera i requereix molt poca potència, fent que una bateria duri molts anys. L'enginyer francès Marius Lavet és conegut com l'inventor d'aquest tipus d'accionaments i el va descriure l'any 1936 a la seva sol·licitud de patent FR823395. (ca)
  • Beim Lavet-Schrittmotor handelt es sich um einen einphasigen Schrittmotor, der elektro-mechanischen Quarz- und Funkuhren als Antrieb dient und für die „springende Sekunde“ des Sekundenzeigers verantwortlich ist. Durch Miniaturisierung kommt er in Armbanduhren zum Einsatz und benötigt dabei nur sehr wenig Leistung, womit ein jahrelanger Batteriebetrieb möglich ist. Als Erfinder dieses Motors gilt der französische Ingenieur Marius Lavet, der das Funktionsprinzip 1936 im Patent FR823395 beschrieb. (de)
  • El motor paso a paso tipo Lavet tiene un uso generalizado como accionamiento en relojes electromecánicos ​ y es un tipo especial de motor paso a paso monofásico. Tanto los relojes de cuarzo analógicos como los de movimiento escalonado utilizan el motor paso a paso tipo Lavet (ver Reloj de cuarzo ). Mediante la miniaturización, puede utilizarse en relojes de pulsera y requiere muy poca potencia, haciendo que una batería dure muchos años. El ingeniero francés Marius Lavet es conocido como el inventor de este tipo de accionamientos y lo describió en 1936 en su solicitud de patente FR823395. (es)
  • The Lavet-type stepping motor has widespread use as a drive in electro-mechanical clocks and is a special kind of single-phase stepping motor. Both analog and stepped-movement quartz clocks use the Lavet-type stepping motor (see Quartz clock). Through miniaturization, it can be used in wristwatches and requires very little power, making a battery last for many years. The French engineer Marius Lavet is known as the inventor for this kind of drives and described it in 1936 in his patent application FR823395. Like other single-phase motors, the Lavet motor is only able to turn in one direction, which depends on the geometry of its stator. The rotor is a permanent magnet. In a clock, a circuit generates the bipolar pulse train, which alternately delivers a positive and a negative voltage to the coil for short periods (providing a correct mechanical output to move a second hand). The motor can be built with a strong magnet and large stator to deliver high torque, but it is mostly built small, to drive the load through a low gear ratio. The stator core looks a lot like one in a shaded-pole motor and defines the rotational direction according to the position of holes, grooves, or shade windings through the stator. However, unlike a shaded-pole motor, the grooves are at backward positions, and the positions where the rotor settles after each cycle are well determined, which is not the case for induction motors in general, where slip and load affect the angle that the rotor turns each cycle. Essential for the movement of the Lavet motor are the cogging points of the rotor, which differ depending on whether the stator coil is energized or unenergized. The cogging points with no current are caused by reluctant force against a direct magnetic field, rather than retarding the propagation of an alternating magnetic flux, and in practice are the angles where the air volume between the poles of the magnetic rotor and the bulk of the stator is minimised. Movement of the common two step Lavet motor: (a) currentless stator, north pole of rotor points to the upper left,(b) energized stator, rotor moves clockwise, and north pole points to the right afterwards,(c) after energization of the stator has declined, rotor moves further until north pole points downright,(d) stator energized in opposite direction, rotor moves clockwise, and north pole points to the left,(a') after energization of the stator has declined, rotor moves to its initial position (a). To make a Lavet motor turn, the current through its stator coil must change direction each step (bipolar) followed by an interval without current while the rotor moves to its reluctant position. Aside from clock drives, there are many variations of Lavet's concept. One example are types of dashboard instruments in cars. (en)
  • 라벳형 스테퍼 모터(Lavet-type stepping motor)는 전자 시계에 주로 사용되며 특별한 종류의 1상 스테퍼모터이다. 라벳형 스테퍼 모터는 크기가 작기 때문에, 손목시계와 더불어 매우 적은 전력이 필요한 곳에 사용된다. 라벳형 스테퍼 모터는 프랑스 엔지니어인 모리스 라벳이 1936년에 낸 특허 FR823395 로 인해서 발명가로 알려지고 있다. 다른 1상 모터들과 마찬가지로, 라벳 모터는 오직 한 방향으로만 움직이며, 이 방향은 고정자의 기하도형적 배열에 따라 결정된다. 그리고 또한 로터는 영구 자석이다. 이 모터는 강력한 자석과 큰 고정자로 높은 토크를 전달할 수 있지만, 또한 낮은 기어비에서도 구동되게 작게 만들수 있다 시계를 움직이는 것 말고도, 라벳형 스테퍼 모터는 여러종류가 있다. (ko)
  • Ша́говый электродви́гатель Лаве́ — разновидность шагового электродвигателя, применяемая в электрических (преимущественно кварцевых) часах. Внешне двигатель Лаве похож на двигатель с экранированными полюсами и также может иметь одну рабочую обмотку. Этот тип двигателя изобрёл и запатентовал французский инженер в 1936 году. Применяется в электромеханических часах и измерительных приборах. (ru)
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  • El motor pas a pas tipus Lavet té un ús generalitzat com a accionament en rellotges electromecànics i és un tipus especial de motor pas a pas monofàsic. Tant els rellotges de quars analògics com els de moviment esglaonat utilitzen el motor pas a pas tipus Lavet (vegeu Rellotge de quars ). Mitjançant la miniaturització, es pot utilitzar en rellotges de polsera i requereix molt poca potència, fent que una bateria duri molts anys. L'enginyer francès Marius Lavet és conegut com l'inventor d'aquest tipus d'accionaments i el va descriure l'any 1936 a la seva sol·licitud de patent FR823395. (ca)
  • Beim Lavet-Schrittmotor handelt es sich um einen einphasigen Schrittmotor, der elektro-mechanischen Quarz- und Funkuhren als Antrieb dient und für die „springende Sekunde“ des Sekundenzeigers verantwortlich ist. Durch Miniaturisierung kommt er in Armbanduhren zum Einsatz und benötigt dabei nur sehr wenig Leistung, womit ein jahrelanger Batteriebetrieb möglich ist. Als Erfinder dieses Motors gilt der französische Ingenieur Marius Lavet, der das Funktionsprinzip 1936 im Patent FR823395 beschrieb. (de)
  • El motor paso a paso tipo Lavet tiene un uso generalizado como accionamiento en relojes electromecánicos ​ y es un tipo especial de motor paso a paso monofásico. Tanto los relojes de cuarzo analógicos como los de movimiento escalonado utilizan el motor paso a paso tipo Lavet (ver Reloj de cuarzo ). Mediante la miniaturización, puede utilizarse en relojes de pulsera y requiere muy poca potencia, haciendo que una batería dure muchos años. El ingeniero francés Marius Lavet es conocido como el inventor de este tipo de accionamientos y lo describió en 1936 en su solicitud de patente FR823395. (es)
  • 라벳형 스테퍼 모터(Lavet-type stepping motor)는 전자 시계에 주로 사용되며 특별한 종류의 1상 스테퍼모터이다. 라벳형 스테퍼 모터는 크기가 작기 때문에, 손목시계와 더불어 매우 적은 전력이 필요한 곳에 사용된다. 라벳형 스테퍼 모터는 프랑스 엔지니어인 모리스 라벳이 1936년에 낸 특허 FR823395 로 인해서 발명가로 알려지고 있다. 다른 1상 모터들과 마찬가지로, 라벳 모터는 오직 한 방향으로만 움직이며, 이 방향은 고정자의 기하도형적 배열에 따라 결정된다. 그리고 또한 로터는 영구 자석이다. 이 모터는 강력한 자석과 큰 고정자로 높은 토크를 전달할 수 있지만, 또한 낮은 기어비에서도 구동되게 작게 만들수 있다 시계를 움직이는 것 말고도, 라벳형 스테퍼 모터는 여러종류가 있다. (ko)
  • Ша́говый электродви́гатель Лаве́ — разновидность шагового электродвигателя, применяемая в электрических (преимущественно кварцевых) часах. Внешне двигатель Лаве похож на двигатель с экранированными полюсами и также может иметь одну рабочую обмотку. Этот тип двигателя изобрёл и запатентовал французский инженер в 1936 году. Применяется в электромеханических часах и измерительных приборах. (ru)
  • The Lavet-type stepping motor has widespread use as a drive in electro-mechanical clocks and is a special kind of single-phase stepping motor. Both analog and stepped-movement quartz clocks use the Lavet-type stepping motor (see Quartz clock). Through miniaturization, it can be used in wristwatches and requires very little power, making a battery last for many years. The French engineer Marius Lavet is known as the inventor for this kind of drives and described it in 1936 in his patent application FR823395. Movement of the common two step Lavet motor: (en)
rdfs:label
  • Motor Lavet pas a pas (ca)
  • Lavet-Schrittmotor (de)
  • Motor Lavet paso a paso (es)
  • Lavet-type stepping motor (en)
  • 라벳형 스테퍼모터 (ko)
  • Шаговый электродвигатель Лаве (ru)
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