Abstract: The angular velocity sensing device is structured in such a manner that a first vibration element 1 having piezoelectric elements or electrodes (two or more) for generating oscillation and a second vibration element 2 having piezoelectric elements or electrodes (two or more) for sensing angular velocity are connected through first connection portions (two or more) on nodes of vibration (two or more) of the first vibration element 1, and the second vibration element 2 and a supporting portion are connected with each other through second connection portions (two or more). These first, second vibration elements, the supporting portion, and the first, second connection portions have a plane structure with almost uniform thickness, and both of the first vibration element and the second vibration element are made to have symmetric shapes with respect to the common center point P.

Abstract: In an electronic watch provided with an electric power generator (1) for generating power from external energy and charge means (3) for charging power generated by the electric power generator (1), clock means (4) executes time display operation by power of the electric power generator (1) or charge means (3) and produces a count pulse (S10) for counting the amount of power stored in the charge means (3) and a charge monitoring means (6) counts the amount of stored power of the charge means (3) in response to the count pulse (S10) and displays the amount of stored power based on the counted value.

Abstract: An angular velocity sensor including a tuning-fork sensor element made of a material exhibiting piezoelectricity to have two arms formed integrally on a base and electrodes provided on surfaces of the arms. The free end of each arm is formed with an extension projecting outward in the direction of arm vibration. The surfaces of the arms lying in the direction of vibration and the surfaces thereof lying orthogonal to these surfaces are each provided with a single electrode. When the angular velocity sensor experiences an angular velocity owing to rotation about an axis orthogonal to the plane of the tuning fork, Coriolis forces act on the arms in the same direction as or the opposite direction from that of the vibration at that instant, thereby producing a bending moment. The direction and magnitude of the angular velocity can be determined by detecting the voltages produced by the bending moment.

Abstract: The electronic watch according to the invention comprises an energy source 1 (power supply), storage circuit 3, clock output unit 4, constant voltage circuit 5, voltage detection circuit 6, switching circuit 8, and control unit. The energy source 1 transforms external energy into electric energy and supplies a power supply voltage. The storage circuits 3 stores the power supply voltage or a booster voltage of the power supply voltage and thereby supplies a storage voltage. The clock output unit has a watch system and a condenser of a small capacitance, receives any of the power supply voltage or the booster voltage, and the storage voltage, and supplies a plurality of logic signals. The constant voltage circuit 5 generates a reference voltage from the clock voltage. The voltage detection circuit 6 compares the power supply voltage or booster voltage, storage voltage, and clock voltage selectively with a voltage set on the basis of the reference voltage and supplies a voltage detection signal.

Abstract: An electronic watch comprises a power supply 1 for generating electric energy by using external energy, a booster portion 2 having at least two booster circuits for sequentially repeating charging by the power supply 1 and boosting and discharging a charged voltage, a storage portion 3 for storing a charge discharged by the booster portion 2, a clock output portion 6 connected to an output terminal of the storage portion 3 and also connected to the power supply 1 by way of a reverse-blocking diode 8 for blocking the stored voltage from reversely flowing to the power supply 1, and a first voltage comparator portion 4 serving as a control portion, wherein the first voltage comparator portion 4 outputs a control signal for switching between charging and discharging of each booster circuit constituting the booster portion 2. Accordingly, effective charging can be made without being influenced by an internal resistance of the power supply 1, thereby reducing the variation of the stored voltage.

Abstract: A geared electric motor 1 used for power window apparatuses, for example, which is provided with an mature 7 having an armature shaft 7a, an output shaft 8 connected with the armature shaft 7a through a worm gear pair (7a7 and 17) and two friction plates 9 and 10 to be in contact with both end faces of the armature shaft 7a. The armature shaft 7a of this motor 1 is prevented from rotation by frictional resistance generating between the friction plates 9, 10 and the armature shaft 7a even if the output shaft 8 is applied with rotatory force.

Abstract: A super-minuature motor used as a driving motor in super-precision miniature machines is disclosed. The motor is constructed from a rotating member 1 made from a permanent magnet, actuators 8-13 which can be moved or displaced by a charged energy, and starters 2-7 made from a magnetic material which are surrounding the outer periphery of the rotating member and movable along with the movement of the actuators toward the direction of the diameter. This construction enables a super-minuature motor to be manufactured even smaller and to minimize the electricity consumption of the motor.

Abstract: A panel-shaped gas-discharging type display device includes an anode and a cathode having a special shape to enhance discharging in an airtight chamber formed by two substrates. A gas containing an ultraviolet emission gas such as Xe and Kr and a fluophor for emitting a light are put together into the airtight chamber. Because of the shape of the cathode, more discharging occurs than with conventional devices. More ultraviolet emission from the discharging excites the fluophor to create a visible radiation. Therefore, the brightness of the device increases. Since the cathode is coated with an emitter material incapable of absorbing the ultraviolet emission gas, discharging is not obstructed by reduction of the ultraviolet emission gas, and the color of the visible radiation is stably maintained.

Abstract: An angular velocity detector circuit composed of: an oscillator circuit including an inverting amplifier connected between a driving electrode of a quartz crystal and an electrode for detecting an electric field generated in the quartz crystal by a Corioli's force when the quartz crystal is rotated; a differential amplifier circuit connected at its input terminals to the detecting electrode of the quartz crystal; a detector circuit which receives the output from the differential amplifier circuit and using the output from the oscillator circuit as detection signals; and an output amplifier circuit which receives the output from the detector circuit.

Abstract: A wiper apparatus comprises a wiper switch, a washer motor, a washer switch for actuating the washer motor by its on-operation, a wiper motor actuated independently by on-operation of the wiper switch and interlockingly with the washer motor by the on-operation of the washer switch, and a controller for maintaining the wiper motor to rotate until the load applied on the wiper motor reaches predetermined value. According to this invention, the wiper blade never stops before the cleaning liquid is removed from the wiping surface by detecting frictional resistance between the wiper blade and the wiping surface as the motor load.

Abstract: A carriage device used for moving and positioning a magnetic head opposite prescribed tracks of a magnetic disk has the magnetic head mounted on a carriage which has linear motor mechanisms built integrally therein. The linear motor mechanisms incorporate coils secured to part of the carriage and permanent magnets secured aorund the coils. Guide rails serving to support the carriage within the range of the sliding motion of the coils are made of a magnetic substance.

Abstract: A rain sensor for an automotive wiper control system detects rain conditions to produce a rain condition indicative signal. The rain sensor includes a vibrator, the outer surface of which is exposed to rain drops and which vibrates or oscillates at an amplitude and frequency corresponding to the energy applied by rain drops. The rain sensor is adapted to produce the rain condition indicative signals corresponding to the vibration amplitude of the vibrator. The vibrator is resiliently suspended within a sensor casing by means of a resilient member which is adapted to allow vibration of the vibrator as rain drops hit the outer surface and to absorb vibrational noises transmitted through the vehicle body. The resilent member simultaneously serves to waterproof the components within the sensor casing.

Abstract: The present invention provides a micro stepping motor for more accurately stepping and positioning a magnetic head in a magnetic disc system. The stepping motor has a permanent magnet type rotor and a stator encircling the rotor, the rotor having a plurality of pole teeth formed therein with a fine pitch and the stator also having a plurality of pole teeth formed therein with a fine pitch and disposed opposed to the pole teeth in the rotor, the stator pole teeth being divided into at least one pair of pole tooth groups which are out of phase relative to each other by an electrical angle of 180 degrees. A single common stator coil is provided to the pair of stator pole tooth groups. Thus, the stepping pitch of the rotor is determined by the pitch in the pole tooth groups, whereby the rotor can steppingly be driven with higher density even by the reduced number of stator coils.

Abstract: A motor driving circuit comprising a pulse generating circuit for generating plural types of pulse trains, a modulation pulse generating circuit connected to the pulse generating circuit, a semiconductor driving circuit connected to an output of the modulation pulse generating circuit for providing operating power to a motor winding, a detecting circuit connected to the driving circuit for detecting a voltage induced in the motor winding, and a counting circuit connected to the detecting circuit.

Abstract: An electronic timepiece comprising a step motor composed of an electromagnetic coil excited by two phase alternating driving signals, characterized by comprising means for changing over the electromagnetic coil from a closed circuit condition to an open circuit condition and vice versa, means for detecting shocks, means for discriminating the shock direction, and means for controlling the driving signal.

Abstract: In a circuit for driving a pulse motor of an electronic timepiece, the initial part or entirety of each drive pulse is modulated to form a group of high frequency pulses thereby reducing an initial surge of current while rotor of motor is still stationary. Modulation can be controlled according to load placed on motor to provide increased drive energy for heavy loading.

Abstract: An electronic timepiece havig a stepping motor driving time indicating hands is provided with a system whereby the stepping motor is selectively driven at one of three different drive power levels, in accordance with the load currently being applied to the motor. Detection of the load level is performed by momentarily sampling a voltage induced in the motor drive coil during a short time interval following a drive pulse. The system provides rapid response to changes in load level, highly stable control, and excellent tolerance to variations in characteristics of different stepping motors and circuit components.

Abstract: In an electronic timepiece having a stepping motor which drives time indicating means, a system is provided for detecting an increase in the load torque on the stepping motor above a predetermined level. When such an increase is detected, the conditions for detection of the load on the stepping motor are changed, and thereafter drive pulses of increased power are applied to the stepping motor. When the increased load is removed, this is detected under the new set of detection conditions, and a return to the original detection conditions is executed, with the drive pulse power being returned to the original level. Stability of control is thereby provided, together with immediate response to increased load on the stepping motor.

Abstract: An electronic timepiece having a reversible stepping motor to actuate time-indicating hands to provide a time display, which comprises a driver circuit to produce driving current pulses composed of compound pulses appearing each time unit. A rotor of the stepping motor rotates a plurality of steps during each time unit to cause one of the time-indicating hands to advance through unequal intervals to provide a modulated display.

Abstract: The present invention relates to a high-temperature microscope. According to this invention, a specimen is held in vacuum with one side of it heated through exposure to an electron beam and the other side of it observed through an observation window.A curtain of inert gas is formed between the specimen and the observation window to prevent the window from being clouded, i.e., to prevent vapor deposit on the window from the specimen.Visual observation (including photography) and measurement of the specimen temperature by heat radiation therefrom are done individually with different bands of wavelengths. For the purpose of illuminating the specimen, beams of spectral distribution containing the components of in the visible band for observation are used but no components of the temperature-measuring band are utilized as light source. For the purpose of visual observation, a narrow visible band contained in the aforesaid beam located in low brightness in the heat radiation beams from the specimen is utilized.