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JP2883709B2 |
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JP2881941B2 |
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JP2881942B2 |
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JPH1189079A |
To easily break a feeder line by a temperature rise and vibration in an earthquake, by providing a sensitive element and a control means starting when the sensitive element is turned off. A breaker is provided with a switch means 30 conn...
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JPH1189078A |
To provide vibration breakers which can be made to operate successively and accurately, following the vibration of an earthquake so as to successively cut off electrical paths. The output (a) of a sensor 10 which detects a vibration is i...
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JP2870789B2 |
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JPH1175386A |
To provide a brushless DC motor which does not need excessive wirings and terminals, has a simple construction, facilitates the size reduction and has a protective device. A three-phase power is supplied from a motor driving circuit unit...
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JP2591814Y2 |
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JPH1169610A |
To operate a relay for warning process which stops electric operation after the preset time has passed, by providing a structure to output a warning tone, light a warning lamp and simultaneously start operation of a timer immediately aft...
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JPH1169609A |
To realize an overheating preventive device, for a regenerative dis charge resistance, which can prevent damages due to a fire of the resistance, which can prevent the danger of a fire and which is low in cost. An overheating preventive ...
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JP2864845B2 |
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JPH1164422A |
To monitor the contact state constantly by disposing an insufficient contact detector easily at a joint. An inner conductor contact monitor 18 comprises a monitor 16, and an insufficient contact detector 14 having a shape-memory needle. ...
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JPH1155098A |
To provide a control process for producing a power supply circuit based on an IGBT type transistor applicable to stored doses of more than 10 M red. In this method, at least one 1st IGBT type transistor 30 is controlled so as to enable o...
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JPH1141792A |
To protect main elements against temperature inexpensively through a simple circuit by arranging a Schottky barrier diode breaking in short circuit mode when a set temperature is exceeded in the temperature protective circuit for the mai...
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JPH1138934A |
To provide a means to secure safety by promptly cutting off a power source even when a PDP(plasma display panel) is damaged by overturning, etc. A piezoelectric sensor 1 is mounted to connect with a discharge cell of PDP opened to a PDP....
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JP2853370B2 |
PURPOSE: To obtain a fluid density detector which can control the fluid density with good accuracy and has high reliability and to obtain a pressure abnormality detector which can detect with good accuracy for the drastic abnormal rise o...
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JPH1131926A |
To provide a temperature correcting device for a power amplifier which can increase the reliability of the device by more effectively suppressing a temperature rise. A power amplifier 1a consists of an amplification part 2, a temperature...
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JPH1123617A |
To interrupt power supply to a load automatically by delivering an abnormal attitude signal from an attitude variation detecting means to an operating means when the initial attitude of a watthour meter is varied due to a disaster, or th...
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JPH1125372A |
To obtain a highly reliable power converter capable of quickly detecting a fire by applying or sticking an overheat detecting material consisting of a substance causing the separation of particles by thermally decomposition when the temp...
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JPH1118285A |
To cut off a connection circuit by simple and inexpensive method and protect an electric apparatus from lightning surge by detecting the proximity of thunder based on the output of a detection means, and opening an AC power breaker when ...
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JPH1118430A |
To reduce the power consumption of equipment and to achieve retraction operation by inputting a low consumption power instruction signal and then controlling the functions of the equipment circuit of the electronic equipment, when the in...
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JP2845882B2 |
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JPH114532A |
To use a circuit breaker as a switch being connected in series with a neutral ground resistor circuit through minimum alteration or modification by connecting an element for closing a switch through an operating mechanism upon excitation...
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JP2841026B2 |
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JP2587913Y2 |
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JPH10341520A |
To detect partial discharge economically and with high sensitiveness, by signal-processing the electromagnetic waves leaking out of the insulator in a container which accommodates a high-voltage electric apparatus in high insulative cond...
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JPH10341529A |
To prevent the functional deterioration of a photosensitive element in the case where it has reached unallowable operation state, and remove the necessity of an external restart control pin, and raise the robust property of start managem...
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JPH10341519A |
To provide a gas isolation opening and closing device which is applicable to newly or existent gas isolation opening and closing device and has excellent detecting characteristics. A gas isolation opening and closing device which include...
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JPH10324207A |
To intercept certainly on-vehicle electrical equipment from a power source, thereafter adopt quick protective measures in vehicle collision. A collision detector 66 detecting vehicle collision, and a main fusible like FE1 disconnecting a...
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JPH10326646A |
To provide a power plug which is equipped internally with a circuit to stop the supply of electric power when an over-current flows, or the connection part in the power plug is over-heated, and which sustains repetitive use. A sermo-sens...
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JPH10327514A |
To make it possible to quickly output a high pressure detection information during abnormal rise in gas pressure inside a pressure vessel, by providing means for outputting high pressure alarm data when a pressure corresponding to compar...
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JPH10322879A |
To provide a power supply controller for a vehicle which can properly protect a power line with a small-sized and low-priced device, in the case of supplying load with a drive current including a sudden rise. This device has a power line...
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JP2830191B2 |
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JPH10310004A |
To take quick, subsequent safety action at the collision of vehicles by surely and appropriately cutting off the power source as the safety motion. A safety device is provided with a collision detector 66, which detects the collision of ...
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JP2826387B2 |
According to this invention, in a temperature abnormality detector, an electronic apparatus can be continuously operated without halt, a failure of a sensor can be reliably detected, and power supply is interrupted to protect the electro...
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JPH10309032A |
To execute immediate cancellation of limiting and controlling on power, by monitoring the overheating state of a drive circuit while the power supply to a load is limited and the active state of the drive circuit is canceled, and then a ...
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JPH10309008A |
To provide a distribution board with an earthquake-sensing breaker which supplies power to lighting fixtures, etc., having less probability of causing consequential accidents arising from electricity as long as power is fed to the distri...
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JPH10309082A |
To prevent the breakage of a circuit by dissolving the stress to rush current suppression circuit. The AC input voltage from an Ac power source 1 is supplied to the AC input end of a diode bridge 2, and the rectified voltage obtained at ...
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JPH10304560A |
To provide a motor-operated reel for fishing, having an overheat- preventing apparatus superior in responsibility and return response against overheat of a motor or power semiconductor constituting a motor drive unit. To judge whether a ...
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JPH10300567A |
To obtain a detecting apparatus whose structure is simple and by which a vibration in all directions can be detected surely, by a method wherein an output end by which a voltage changed so as to correspond to a change in the interval bet...
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JPH10304558A |
To provide a disaster prevention power interrupt device which prevents automatic power feeding, even if power is restored after a service interrupt by an earthquake, and to continue power feeding so long as power feeding from a public po...
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JPH10290520A |
To provide a switch which can be simplified in structure, can avoid the increase of its size even when the number of circuits to be switched is increased, and can operate according to the physical quantity of a fluid. A switch measures t...
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JPH10285802A |
To decrease heat generation increase related to a diode in a failure in a power device, by causing a power circuit having failed to send a failure information signal to another normal power circuit, and causing the normal power circuit t...
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JP2811872B2 |
There is described a protection circuit for a semiconductor device comprising power switching device chips each of which has a first and second main electrode and a control electrode for turning on and off a circuit between said first an...
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JPH10260086A |
To continuously detect temperature without exchanging even if one of resistance temperature sensors is troubled so as to improve reliability of temperature detection by using a plurality of resistance temperature sensors of the same spec...
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JPH10262329A |
To make it possible to replace only a faulty portion or a defective part during repair or replacement by installing main parts such as a plunger, vibration sensor, heater function, etc., on a substrate of microcomputer in one united body...
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JPH10510105A |
PCT No. PCT/FR96/01513 Sec. 371 Date May 19, 1997 Sec. 102(e) Date May 19, 1997 PCT Filed Sep. 27, 1996 PCT Pub. No. WO97/12379 PCT Pub. Date Apr. 3, 1997An electrical transformer which is filled with a combustible coolant may experience...
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JPH10257666A |
To immediately secure safety in a shelter after an earthquake and to prevent fire from occurring from an electrical heat-generating appliance in an uninhabited house after evacuation by operating a breaker due to a timer function, when a...
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JPH10248128A |
To improve accuracy in detecting a minute ground fault, by using a simple means for removing an influence of a gas pressure variation caused by an abrupt change in weather like rain fall. In a gas insulation apparatus 1, a gas pressure s...
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JPH10239376A |
To prevent the surface temperature of a heater from undergoing dispersion and the heater from overheating with a simple construction and low cost by connecting a heat sensitive wire melted at above a fixed temperature for shorting a pair...
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