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JP3671989B2 |
To keep the state of power cut-off regardless of breakage at relays constituting a power cut-off device. A first relay 30 equipped with one constantly-closed contact 31 and two constantly-opened first and second contacts 32 and 33, a sec...
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JP3668518B2 |
PURPOSE: To prevent generation of trip failure and to rapidly detect and display disconnection and insulation defect by providing a detection means for detecting insulation defect and disconnection of a switch based on a combination patt...
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JP3656413B2 |
To realize both a control operation and a temperature protection function which corresponds to a number of loads by mounting a power element with an over-temperature-breaking means for breaking current supply on the same substrate or an ...
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JP2005143232A |
To provide a protection method whereby high load operation can be intermittently performed without interrupting an inverter current.The protection method for power semiconductor devices (1 to 6) is as follows: a thermoelectric cooling mo...
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JP2005124329A |
To provide a battery protector reduced in size and easy to manufacture, and a battery pack.When the protector is attached to a battery 8, the battery protector turns first and second fixed terminals 2, 3 into a continuity by a bimetal pi...
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JP3643711B2 |
To interrupt charging when either of secondary batteries connected in parallel for charging in an extremely simple circuit is charged by overcurrent. A charger performs charging by connecting a plurality of secondary batteries 1 in paral...
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JP2005110458A |
To provide an electric breaking device for earthquakes that is easily mounted on an arbitrary molded-case circuit breaker and that prevents an occurrence of a fire when power supply is resumed after an earthquake.A main unit 11 comprises...
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JP3628783B2 |
To provide a simple and low-cost means for measuring current flowing through a circuit breaker with thermo-magnetic trip means. A voltage applied to a bimetal 19 is utilized for detecting a load current. The voltage signal for indicating...
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JP3627374B2 |
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JP2005057896A |
To dispense with the maintenance work of a terminal by substantially eliminating the consumption of a battery at the thermosensitive detection terminal, and besides to remote-control abnormal heating in real time.This system is equipped ...
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JP3621814B2 |
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JP2005039948A |
To surely prevent the overheat of a main element by accurately detecting the temperature of the main element constituting a semiconductor device that controls an AC load.The semiconductor device is configured such that: an overheat detec...
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JP3618635B2 |
To sufficiently lower a temperature of a protector when a discharge of a battery-stored energy is finished and discard/neglect a battery pack without anxiety immediately after the discharge is finished, by a method wherein a cooling spee...
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JP2005020952A |
To completely eliminate the risk that may be caused by a capacitor storing high-voltage electric power, even at a collision between vehicles.HV_ECU executes programs, including a step (S200) where system main relays are turned off and a ...
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JP3605275B2 |
To provide a lighting transmitter which does not malfunction, even if a remote controller main part is placed with an inclination, can cope with different apparatuses and is general purpose, and furthermore, is very satisfactory in certa...
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JP3605817B2 |
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JP2004350383A |
To provide a switch of smaller size, and improved economy and reliability, which is assembled in a power supply circuit of an electric equipment of a low-voltage contract consumer.A polymer switch element 20 of which a resistance varies ...
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JP2004535748A |
In order to recognize an electric arc in a 42 V vehicle electrical system and initiate suitable protective measures, a detection line is at least partially guided along a current conducting supply line for the protection thereof, whereby...
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JP2004320418A |
To provide a high-frequency power supply which can supply high-frequency output higher than the conventional output without breakdown of an amplifier.The high-frequency power supply comprises a junction temperature arithmetic unit 18 for...
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JP3585105B2 |
To provide the control circuit of a semiconductor device with superheating protection function, which ca reduce possibility that the semiconductor device is destroyed. The control circuit of the semiconductor device with superheating pro...
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JP2004311352A |
To provide a thermal protector having high reliability and high versatility of use as a protection device.A first to fourth terminals 4b, 5b, 6b, 7b are drawn out from a housing 3 made of synthetic resin, and a trimetal piece 8 is displa...
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JP3584832B2 |
To positively and securely avoid the overheat of a relay with the compact structure in an electric power steering system for controlling the switching condition of an assist motor and current-carrying lines of a driving circuit with a re...
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JP2004531384A |
The invention relates to an internal combustion vibrator for compacting concrete, comprising a vibrator housing in which a rotational unbalance mass, an electric motor powering said unbalance mass and part of a power line connected to th...
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JP3572112B2 |
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JP2004254498A |
To improve protective operation of a power control system from a load or abnormality of a power semiconductor device for driving and to increase safety of the system.The power supply device for vehicles has a plurality of modules which c...
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JP2004246992A |
To initialize a fuse latch circuit stably and with low current consumption.One end of a fuse is connected to a ground point through a transistor N1A, and the other end is connected to a node VaA. For example, when the fuse is connected, ...
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JP2004248415A |
To provide a switching circuit which enables coping with the side of an externally connected apparatus, when there is slight abnormality.This switching circuit has a MOS transistor Q1; a circuit (a resistor R2 and a resistor R3) for dete...
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JP3552597B2 |
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JP2004222389A |
To provide a circuit protection unit which can be reduced in a circuit and which can simplify a mounting work.The circuit protection unit includes a temperature fuse 2 melted by a temperature rise, a surge absorber 3 for absorbing a tran...
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JP3547442B2 |
In response to the loss of a generator in an electrical power system, all operating electrical loads are automatically switched to a second generator, and the electric power system continues to provide power to all of the loads. The tota...
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JP3545048B2 |
PURPOSE: To provide a motor with a circuit breaker which can surely chop current supply to an armature in a moment when overloaded. CONSTITUTION: A motor with a circuit breaker is provided with a circuit breaker 16 which is electrically ...
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JP2004173391A |
To provide a power circuit which is high in the accuracy of detection of the temperature of a heating body to be detected and can be reduced in size.Two Zener diodes 16 and 17 are connected in series between output terminals 14 and 15. A...
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JP3536880B2 |
To provide a detecting circuit for suspension of cooling water of an emergency diesel power generating installation, which can prevent careless engine stop due to wiring disconnection of a flow switch. This detection circuit is provided ...
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JP2004159439A |
To provide a power breaker which does not require a collision detecting mechanism and an additional circuit.When relays 14 and 16 are ON, a battery 10 and an inverter 12 are electrically connected with each other, and the output of the b...
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JP2004153991A |
To secure higher safety by detecting ground faults of dc currents at lower cost with high accuracy.A detector includes a zero-phase current transformer (ZCT)41 which measures the difference of quantities of the dc currents flowing throug...
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JP3528551B2 |
To provide noncontact feeding equipment in which a moving unit is protected by the heat of a pickup coil. A heat-sensitive wire 51 which is composed of a pair of nonmagnetic conductors which are respectively covered with insulators which...
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JP2004134375A |
To prevent unusual overheat accidents resulting from a glow contact formation in a conductor connection part.An electrical switching device, such as a receptacle, includes a line conductor circuit having a first temperature, a neutral co...
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JP2004133568A |
To provide a rush current preventing device capable of limiting a rush current even when a time interval after a power switch is turned OFF until it is turned ON is short and preventing useless power consumption in a rush current limitin...
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JP2004096958A |
To provide a thunder resistant system substantially obtaining no service interruption by shortening a power interruption time for protecting an apparatus from a thunder surge, and capable of automatically being restored.The thunder resis...
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JP2004507994A |
A protective relay is provided to protect circuitry against reverse battery polarity or load dump, wherein a relay coil is operatively connected to a contact switch and is fed by a reverse bias diode (which may be a Zener diode) such tha...
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JP3505618B2 |
To provide a feeder system that prevents an overcurrent from flowing to a load, prevents a circuit element from being damaged and burned by the overcurrent generated in a pickup coil and that generated in a resonance capacitor, can displ...
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JP3498251B2 |
PURPOSE: To enhance the accuracy and reproducibility of a temperature detection circuit by making a binary decision whether the temperature of a semiconductor exceeds a predetermined level based on the direction of differential current b...
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JP3497926B2 |
To quickly respond to the variance of pressure in a battery and be broken even by comparatively small pressure to automatically interrupt the current of an electric circuit by providing a member to be broken which is received in an enclo...
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JP3497919B2 |
PURPOSE: To provide a pressure cut off sensor capable of surely stopping use of a storage battery in which inside pressure is abnormally increased and ensuring safety by installing specified constitution. CONSTITUTION: A pressure cut off...
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JP2004037135A |
To provide an apparatus and a method for monitoring a dissolved gas in oil that can send back the oil into oil equipment without allowing the oil to come into contact with the air after the monitoring operation of oil.A non-bellows-type ...
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JP2004040922A |
To attain temperature detection, and protection from overheat and overcurrent of an inverter circuit.This inverter circuit device includes a switching circuit 9 consisting of a plurality of switching devices in an inverter circuit, and a...
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JP2004032876A |
To provide a general home with a simple, secure, and low-priced vibration restraining device.This device has a plurality of power input terminals, and in a power source for a general home each input terminal becomes single-phase two line...
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JP3488082B2 |
To prevent fire of a vehicle from occurring even if a wire harness is short-circuited, by shutting off a part between a battery and a wire harness when there is a possibility of generation of a trouble on the wire harness. When an air ba...
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JP3488057B2 |
To provide vehicular power feed equipment that delivers power with reliability through suppression of heat caused by a power-line switch means set in a power line and of its resultant deterioration in quality. A vehicular power feed equi...
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JP2004501506A |
An anti-hot spot device for at least one photovoltaic module (10) including: a photovoltaic module shunt diode (20), means (36, 40) for detecting at least one operating characteristic of the photovoltaic module, and means (22, 34) for is...
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