Abstract: A sample measuring apparatus of an embodiment includes: a laser diode that applies laser light to a measurement specimen prepared from a sample; a detection unit that acquires optical information from a particle in the measurement specimen to which the laser light is applied; a drive circuit that supplies a direct-current drive signal to the laser diode; and a high-frequency conversion circuit that generates a potential that switches between a high level and a low level in a predetermined cycle to guide the drive signal outputted from the drive circuit to a second signal path which is different from a first signal path connected to the laser diode in the predetermined cycle, thereby converting the drive signal to be supplied to the laser diode into a high-frequency signal.

Abstract: A sample measuring apparatus of an embodiment includes: a laser diode that applies laser light to a measurement specimen prepared from a sample; a detection unit that acquires optical information from a particle in the measurement specimen to which the laser light is applied; a drive circuit that supplies a direct-current drive signal to the laser diode; and a high-frequency conversion circuit that generates a potential that switches between a high level and a low level in a predetermined cycle to guide the drive signal outputted from the drive circuit to a second signal path which is different from a first signal path connected to the laser diode in the predetermined cycle, thereby converting the drive signal to be supplied to the laser diode into a high-frequency signal.

Abstract: The present invention discloses: an antenna for detecting a magnetic field, wherein a plurality of loop antennas wound in opposite directions are connected in series and placed in a plane, a magnetic field detector comprising a plurality of the above antennas for detecting a magnetic field and an output circuit for taking out a differential output between the outputs of the plurality of antennas, and a gate for detecting detection tag comprising the above magnetic field detector and a coil for magnetic field generation.

Abstract: The present invention discloses a decision machine of detection tag using magnetic field, comprising: a cross coil 22 constituted by a plurality of individual coils which have been wound round a frame member so as to form a predetermined differential angle between the central axes of the individual coils, a magnetic power supply part 24 comprising an oscillator for generating an AC power and a phase modulator for differing each other the phase of AC power generated by the oscillator, by a predetermined differential angle, to supply powers of different phases to the individual coils, a signal processor part 28 connected to the plurality of individual coils, and a decision part 30 for deciding the output signal sent from the signal processor part.

Abstract: A magnetic detection-tag deactivating apparatus for deactivating a magnetic detection-tag, having preferable operability when deactivating operation, and further enabling to increase accuracy of deactivation, includes: at least one or a plurality of deactivating rollers, disposing one or more cylindrical unitary permanent magnets, on a periphery surface of which is magnetized to N-pole and/or S-pole, along an axial direction thereof, whereby deactivating the magnetic detection-tag through a relative movement between the magnetic detection-tag and the deactivating roller. Herein, it is preferable that the deactivating roller is provided in rotatable manner.

Abstract: The present invention discloses a method for reactivating a magnetic detection tag, which comprises exposing a magnetic detection tag having a soft magnetic substance layer and a hard magnetic substance layer, to an alternating magnetic field generated by applying an AC power to a coil, moving, in this state, either or both of the magnetic detection tag and the alternating magnetic field, thereby sweeping the magnetic detection tag in the alternating magnetic field to demagnetize the magnetized hard magnetic substance layer of the magnetic detection tag; and a machine for reactivating a magnetic detection tag.

Abstract: A compact magnetic object detection device with high degree of freedom for installation can be provided. The magnetic object detection device includes magnetic field generating mechanism for radiating an alternating magnetic field in a vicinity space; one or a plurality of loop antennas which convert the magnetic field in the vicinity space into an electric signal; determining mechanism for analyzing an existence of magnetostriction and determining an existence of a magnetic object, the magnetostriction generated by the magnetic object existing in the vicinity space based on the electric signal of each of the loop antennas. An installation member, attached with at least the magnetic field generating mechanism and each of the loop antennas, has a pole shape.

Abstract: A crusher-is disposed at a distal end of an operating boom of a construction vehicle. The crusher permits the breaking of a crushed mass of natural stone by means of a breaking force occurring between a stationary jaw body and a movable jaw body as the movable jaw body is closed toward the stationary jaw body. A flat auxiliary member is replaceably disposed on the stationary jaw body opposing the movable jaw body so as to break the crushed mass into smaller pieces. The distal end of the stationary jaw body projects longer than the distal end of the movable jaw body to facilitate the raking out of the crushed masses obtained in a blasting operation.

Abstract: A rotation adjusting apparatus in a crusher is disclosed which even if siding members of a rotational mechanism of the crusher wear in use, the wear is adjusted easily and rapidly. In the crusher, a rotational housing with a pair of pawls which crushes or cuts an object, such as a reinforced concrete or a steel frame, to be crushed or cut is held to a fixing member by a holding member such that a wear is adjustable, and the housing can be rotated to a desired rotational angle and fixed there by rotation restricters and a rotation stopper.

Abstract: A Hall element device comprising a plurality of Hall elements including a first and last Hall element, each of the elements including a first input, a second input, a first output and a second output; a control current circuit, electrically connected to each of the first input, for driving each of the Hall element; and a circuit, electrically connected between adjacent Hall elements, for maintaining the second output of the one adjacent Hall element and the first output of the other adjacent Hall element at the same potential and for preventing current from passing across the adjacent Hall elements, the circuit including a first input electrically connected to the second output of the one adjacent Hall element, a second input electrically connected to the first input of the other adjacent Hall element, and an output electrically connected to the second input of the other adjacent Hall element, whereby the voltage across the first output of the first Hall element and the second output of the last Hall element

Abstract: A multiplier using Hall element comprises a Hall element with a pair of control current input terminals and a pair of Hall output terminals, an electromagnet for converting load current into magnetic field and for applying the magnetic field to the Hall element, a transformer for converting load voltage into control current, and a constant current circuit for making the secondary current of the transformer constant and then feeding it to said control current input terminals. The Hall element produces across the pair of Hall output terminals Hall output voltage corresponding to the product of the load current and the load voltage.