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JP2000050682A |
To improve useability by forming a display signal from a valid signal, in a circuit which outputs an valid signal 'H' and drives a specified circuit Y, for either case of whether an input signal which is valid in driving the specified ci...
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JP3003560B2 |
To provide an inexpensive disaster prevention facility by improving the starting coefficient of an induction motor installed therein. This disaster prevention facility 1 has a firefighting facility 3 made of an induction motor 6 and a sq...
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JP2000032786A |
To obtain a starter which allows auxiliary winding to be separated with a number of revolutions corresponding to a power supply frequency, using an electric circuit. When a rotor 13 is rotated, an electromotive force VI in proportion to ...
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JP2000023482A |
To provide a motor controller and a motor control method thereof, capable of reducing the frequency of forced interruption of power supply to a motor. If the rotational speed of a motor does not reach the first comparative rotational spe...
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JPH11356073A |
To provide a motor control circuit which can rotate a motor in the direction of dissolving the nonconformity, even in case that an interlock switch works. A first diode 31 and a second diode 32 are connected in parallel with a normally c...
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JPH11341851A |
To provide a malfunction detecting apparatus of a motor, wherein the miniaturization of its whole and the reductions of its cost and its current loss are made possible. This apparatus detects the malfunction of a motor 3 driven by an H-b...
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JPH11341849A |
To provide a load control circuit, whereby a load can be tested easily in a state which connects a control unit with the load, without having to operate the load. A load control circuit controls the feeding of power to a load connected w...
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JPH11341872A |
To provide a starting method of sensorless synchronous servomotor which assures reliable start of operation with a low level current. This starting method is applied to the starting method, in which after a rotor 3 is fixed to the predet...
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JPH11341848A |
To provide a power supply feeding circuit which drives a motor as feeding suitable voltages to the motor respectively when starting/rotating the motor, and prevents wasteful power consumption. A power supply feeding circuit has a motor M...
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JPH11321567A |
To stop a wiper arm on the position not obstructing the field of vision by providing an electric source cut delaying function in a controller, and making input voltage of a wiper motor drive circuit OFF by the controller when a key switc...
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JP2978474B1 |
To provide an intermittently driving device for a rotary wind cleaner capable of forming a lag angle between two rotational wiper to be intermittently rotated while being stopped for every rotation. A first wiper is connected to a first ...
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JP2979765B2 |
PURPOSE: To eliminate over excitation due to overvoltage or step-out due to undervoltage through a start control means for achieving acceleration in low frequency region by performing current controlled voltage control at the time of sta...
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JPH11313494A |
To provide a control circuit for starting motor which is capable of controlling apparatuses, such as a plurality of air blowers, etc., with a set of automatic speed change gears and allows a device incorporating the control circuit to be...
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JP11289785A |
To provide an electric circuit which controls a relay so as to prolong the effective life of the relay connected to inductive load. Inductive load such as a motor 14, or a power source 12 is connected directly or indirectly, by the switc...
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JPH11289785A |
To provide an electric circuit which controls a relay so as to prolong the effective life of the relay connected to inductive load. Inductive load such as a motor 14, or a power source 12 is connected directly or indirectly, by the switc...
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JP2962045B2 |
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JPH11275879A |
To simplify a circuit formation by integrally-constituting a connecting mode switching means and a switching signal outputting means for a plurality of first and second connecting terminals. When switch elements 103, 104 are connected to...
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JPH11266594A |
To suppress the drive current at the start of fan revolution for avoiding the fluctuations in load on a control power supply and thereby reduce heating loss in a regulator. When a fan drive determining means 1 receives a command from CPU...
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JPH11262292A |
To lengthen the contact life of a relay by preventing an excessive current from flowing through the contact of the relay switching the rotating direction of a DC motor. When a normal rotation command switch 7 is changed from an on-state ...
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JPH11252989A |
To provide an electric washing machine, which is constituted in such a way that sufficiently high efficiency and large torque can be obtained, when an induction motor is started. An inverter 13, which supplies AC power having a variable ...
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JPH11252961A |
To prevent excessive current from being passed through a relay which switches the direction of the rotating for a direct-current motor, thereby prolonging the contact life of the relay. When a forward revolution command switch 7 is turne...
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JP2948902B2 |
An electronic circuit for starting a single phase induction motor operating from a source of alternating current, the motor having a cage type rotor, a coiled stator having at least a main winding and a starting winding, and a permanent ...
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JP2946895B2 |
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JP2943563B2 |
PURPOSE: To achieve starting control even without providing a starting device separately by controlling the speed of the rotor of a generator based on the output of a rotating phase angle detector and an instrument transformer. CONSTITUT...
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JP2943810B2 |
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JPH11235069A |
To provide a speed controller which can realize both a guide response at the time of start of a motor and a stabe speed at the time of a steady speed, and enables 'the effect of calculation in parallel and switching'. The speed of a moto...
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JP2941443B2 |
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JP2941497B2 |
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JPH11225492A |
To prevent deterioration of insulation of the coil of an induction motor, in Y-Δ start of the induction motor. This starter starts the induction motor, connecting the primary winding of the induction motor in a star and switching the ab...
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JP2598664Y2 |
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JP2598346Y2 |
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JPH11206182A |
To provide a reliable motor-driving device that can precisely actuate a motor even when a submergence accident occurs, and at the same time prevents an overcurrent on rotating direction switching operation. In a device, by operating inte...
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JPH11206163A |
To make it possible to control an AC motor adequately just after its starting even when the AC motor is driven at a low voltage for the starting. A driving controller includes an AC motor 2 for generating a rotation detecting signal with...
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JPH11197550A |
To protect a converter device while limiting the outputs of induction motors by automatically decreasing the acceleration and deceleration rates of all inverters when the total sum of the respective induction motor outputs exceed the rat...
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JP2924347B2 |
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JPH11196594A |
To start a motor securely even if the electromotive force of a solar cell fluctuates. When a motor is in a resting state, the electromotive force of a solar cell is judged in a state that a dummy load R3 is connected. When the electromot...
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JP2920941B2 |
A motor control system is disclosed which includes an encoder for generating pulses in proportion to the rotational amount of the motor. A speed instructing unit provides a speed instruction for the desired rotational speed of the motor....
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JP2921490B2 |
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JPH11191989A |
To start a plurality of motors without causing speed variation, by dividing the speed into a plurality of speeds from the minimum rotation to a final target speed, controlling the speed to each split target speed, and starting up the mot...
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JPH11191977A |
To prevent parts failure and performance deterioration with a long drive, by performing addition when a motor is driven and performing subtraction when the motor stops, prohibiting to drive the motor until a count value reaches a lower-l...
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JPH11187684A |
To provide a start controller of a large auxiliary machine, which is capable of avoiding the cut-off of a power supply to the large auxiliary macine and the damage of a coil of the large auxiliary machine, and smoothly control the start ...
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JPH11187688A |
To control the speeds of a plurality of motors until a final target speed can be obtained, without generating irregularity of speeds by dividing a speed region until the final aimed speed, setting divided aimed speeds, and giving the nex...
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JP2916251B2 |
A motor winding system having a main winding and a start winding circuit with a start winding and a PTC resistor in series therewith wherein the resistor is electrically removed from the circuit at a predetermined time after motor starti...
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JP2915951B2 |
A loom operating apparatus and method involving the use of an inverter device interposed between loom motor and power supply. The inverter device is controlled so as to make the motor torque greater than a rated value from immediately af...
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JP2915133B2 |
In a power supply circuit for a motor in which a power source line can be opened and closed by a first opening-closing device, a construction is adopted which has a electrically controllable second opening-closing device connected in par...
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JP2915485B2 |
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JPH11178377A |
To select a generator with a small capacity rating as compared with the capacity of an engine generator by performing the delay control of a phase difference which is calculated in advance and then setting the rush current of an inductio...
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JPH11178376A |
To provide a rush current control circuit of a motor, capable of suppressing current flowing when a motor is started by a simple circuit, without the use of special parts. In the rush current control circuit of a motor 5, where a delay- ...
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JP2910259B2 |
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JP2910188B2 |
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