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Patent Searching and Data


Matches 701 - 750 out of 1,753

Document Document Title
JP2001236128A
To exactly judge advisability of a three-phase current power source and advisability of wiring between the three-phase current power supply and electrical equipment.This judging device is constituted by providing a pulse generator 13 to ...  
JP2001224135A
To surely cut off an inverse current, even on the upstream-side control system with reference to a load.The load 360, one end of which is grounded, is connected to a power-supply terminal 300 via a terminal 302 in series with a power MOS...  
JP2001511636A
(57) Summary book invention relates to the control circuit to the direct-current motor which has an incorrect polarity protection instrument. Reduction of the loss electric power of an incorrect polarity protection instrument is attained...  
JP2001217696A
To detect an overcurrent-flowing to a circuit, at a low cost wing simple circuit constitution.A differential amplifying circuit 76 for an overcurrent detecting circuit 7 operates by being supplied with a current from a power source VCC, ...  
JP3191750B2
To prevent a power protective breaker from actuating and shutting off a power line by preventing an operation from resuming simultaneously upon resetting a power supply and an excessive current from flowing to the power supply line when ...  
JP2001190024A
To provide a rectifying circuit device for one or a plurality of AC voltages which can surely protect the connection under the erroneous polarity. A controllable rectifier element is at least one thyristor. The gate terminal of the thyri...  
JP2001177387A
To provide a load driver that can shut off a current, when a battery is connected in reverse, using a simple configuration.The source of a power MOS transistor(TR) 320 is connected to a terminal 303, that is connected to ground via a pow...  
JP2001508639A
(-- 57) summary -- this protection instrument includes the disconnection switch (13) by which injection connection is made on the load current track. This disconnection switch (13) is operated through an electromagnetism system (9). It s...  
JP2001157356A
To provide a control circuit detecting a short circuit or an overcurrent condition and, in response to it, cutting off output current from a system power supply and a method thereof.This control circuit 10, with an output transistor Q1 c...  
JP3165381B2
To prevent a magnet from being burnt or being broken down by interrupting the current to the magnet when energization command controlling signals for driving the magnet are outputted exceeding a fixed time. A magnet protective device is ...  
JP2001506117A
(57) The electromechanical switching device (10) by summary book invention is automatically connected by the polarity which had the terminal of two power supplies (14, 12) chosen. A double polarity double injection (DPDT) switch (34) is ...  
JP2001112167A
To provide a polarity exchange system which keeps the stability of the circuit by deciding whether the load is connected. When a power source and load are in parallel and they are of the same polarity, a straight polarity switch MSF elec...  
JP2001095152A
To cut off power supply if a ground terminal is not grounded. If power supply is applied to a line between terminals 14, 15 with the voltages induced on both the sides of the neutral position 17 of a secondary winding 16 set so as to be ...  
JP2001083453A
To provide a driving circuit provided with a protecting function for preventing a semiconductor optical scanning device from being broken caused by the abnormality of a driving signal waveform. A sampling pulse (b) is generated from a sa...  
JP2001069674A
To work a negative-polarity input-voltage preventive circuit, so as to obstruct the application of inverse voltage to the input to a power circuit by detecting inverse voltage, when negative-polarity voltage is applied, and to supply pow...  
JP3141807B2  
JP3141806B2  
JP2001045658A
To prevent a system from being broken by including a pull-up control circuit pulling up a female contact, a printed circuit board insertion detecting circuit generating a control signal, a power supply control circuit cutting off connect...  
JP3134169B2
PURPOSE: To improve the accuracy in detection of the abnormal condition of a pulse by making out the same condition as leak in a circuit, and breaking the power supply to equipment in the case that the power supplied to the load operated...  
JP2001014076A
To make preventable an electronic system from a malfunctioning at a low cost by detecting cable misconnection without increasing the number of cores of a cable with connectors nor the number of pins of the connectors by mutually connecti...  
JP3117604B2
PURPOSE: To obtain an electric apparatus for driving a control mechanism according to a control system power supply and an actuator mechanism according to a driver system power supply in which ah appropriate countermeasure can be taken a...  
JP2606604Y2  
JP2000333366A
To enhance maintainability by providing a power supplying means provided with a switch which interrupts the conductor of either of a positive power line and a negative power line according to an incoming control signal, and a reverse con...  
JP2000308254A
To obtain a small-size grounding detection circuit that can stably detect grounding conditions. A transformer 5, where a primary winding is connected between a voltage dividing point formed of a couple of voltage dividers 2a, 2b connecte...  
JP3098983B2
To provide a safety ground detector which automatically detect the electric conduction state of safety ground of a part of equipment. A test relay circuit 11 judging whether grounding connection is in the open state is installed. When gr...  
JP2000278861A
To improve reliability by constituting multiple choice output propriety decision depending upon the decision of an operator of a logical circuit and eliminating a mistake on the decision of the operator. The multiple choice output inhibi...  
JP2000277213A
To enable electric power to be supplied only when a power source adapter is properly connected to a device. This power source adapter connecting detecting system for detecting a suitable connection of a power source adapter to a device c...  
JP2000270470A
To increase safety by connecting a conductor plate for making connection to a pin for grounding to a grounding wire extension conductor, and by providing a detection part for detecting whether a detection wire is connected to the groundi...  
JP3092474B2  
JP2000259259A
To obtain a switching system that abnormal heat of a heater is prevented especially at an early stage of impression with high reliability and it is used at both power supply voltage of 100 V and 200 V by connecting first and second heate...  
JP3087705B2  
JP3076157B2  
JP2000209774A
To provide a malfunction preventing device for on-vehicle electrical equipment which can prevent malfunctions of on-vehicle electrical equipment due to water infiltration. A starter drive circuit 11 is constituted of a battery 12, fuses ...  
JP2000201433A
To prevent the occurrence of input current surge and the large transition of current and voltage. Current is controlled by a relay 48, a switching assembly 67 is connected to a power distributing device 40 to control the relay 48, and a ...  
JP2000184598A
To provide an electric apparatus assuring higher safety operation which can automatically turn OFF the power supply circuit when the power failure recovers, so that the operation can be started again after the safety is assured even when...  
JP2000156144A
To provide a control circuit capable of reducing a volume dedicated to parts.This control circuit is provided with a drive signal output unit 5b for outputting at least one command signal for controlling the drive of equipment 8a, 8b to ...  
JP2000152493A
To prevent the malfunction of a DC load by suppressing the difference in the voltage supplying time to the load by providing an AC voltage monitoring circuit which sends turning-on signals to all switching elements, after confirming that...  
JP2000111599A
To provide a ground monitor of electrostatic ground system.A detection circuit is provided, which is provided with a polarity test circuit 10, a step-down rectifying circuit 20, a ground test circuit 30 and an alarm device 40. Commercial...  
JP3068095U
[A subject] It judges whether load is connected or not and provides a polar exchange device which maintains stability of a circuit. [Means for Solution] When a power supply and load are parallel and the polarity, after a time delay is se...  
JP3030156B2
PURPOSE: To prevent occurrence of abnormally high voltage due to transient phenomenon and the like by constituting a tap switching relay in a step-down transformer to function upon receiving a low voltage, providing a switching element f...  
JP2000503517A
(-- 57) summary -- the splicing device to the load circuit network (1, 2) which produces connection in a non-short condition in the amount of permissible operations by at least one opening-and-closing gap (5). Besides the current sensor ...  
JP2000503518A
(57) in the case of the rise of input direct current voltage (U), from a summary zero bolt to target voltage (U), The first current-limiting circuit for output direct-current current (I) to flow through the load (RL, CL) connected when t...  
JP2000503516A
(57) Plug equipment as opposed to a splicing device especially TT, and TN network in summary book invention], It is related with the splicing device (1) which comes out, exists, and makes penetration connection of the conductor (8, 9, 10...  
JP3011831B2  
JP3006845B2  
JP2000032657A
To realize the transmission of energy with an opened network, by so providing each switch in each conductor segment as to start its operation when at least one voltage of each conductor segment is lowered below a first starting threshold...  
JP2000013988A
To surely protect an electric circuit, even if wrong wiring is made in a wiring construction, and to restore an equipment to its essential normal operation without the accompaniment of replacement of parts within an electric circuit, whe...  
JP2000003222A
To obtain a power unit in which simplicity and the stability of power supply can be made sharply satisfactory, and the circuit damage of an outside device due to an unready high voltage output can be hardly generated, and to obtain a dis...  
JPH11341675A
To sense surely a fault generated in a cabling zone independently of any system condition of a transmission line, by computing at one end of the transmission line a first difference between the current signals of both the ends of a cabli...  
JPH11308780A
To provide an electric load control circuit for vehicle, which drives a field effect transistor for driving a coil by pulse width modulation(PWM) control and which is able to protect a load, when a power supply is reversely connected and...  

Matches 701 - 750 out of 1,753