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Patent Searching and Data


Matches 551 - 600 out of 1,748

Document Document Title
JP3701596B2
To determine the suitability of the reconnection of a feed line based on the estimation of power consumption per group of electric apparatuses without entering a house of a power user to be a measurement object. A correlation established...  
JP2005261082A
To surely protect a converter from miswirings, when connecting a solar panel to the converter.A protection circuit 124 is arranged at the converter to which the solar panel is connected. When DC power is inputted so that an input termina...  
JP3696384B2
To prevent current leakage from the driving side to the stopping side by juxtaposing two sets of bridge circuits between a power supply and a motor and rotary driving the motor through any one bridge circuit to close one of two switches ...  
JP3687451B2
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 po...  
JP2005224088A
To provide a load protection circuit that is adapted to protect negative-polarity voltage from being applied on loads that operates on a direct-current, and to minimize a loss when a voltage is being supplied at a normal polarity.A semic...  
JP3685212B2
PURPOSE: To provide a high-voltage power source which can prevent the output of a high voltage when a high-voltage outputting connector is not connected to such equipment as the secondary electron multiplier, etc., by surely detecting di...  
JP2005210823A
To provide a power converter for an AC module that can prevent the occurrence of a spark when a plug is pulled out from a wall socket that is connected to a commercial AC system.When DC power connected to a solar cell and inputted from i...  
JP3669426B2
To prevent misoperations of electronics and giving damages to a circuit element, caused by improper connection of a connector used in the electronics. A connector, having groups of power feed paths corresponding to each of electronic boa...  
JP3662431B2
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...  
JP2005134283A
To provide a current output sensor of a two-wire system capable of replacing two external connection terminals optionally with a power source terminal and a GND terminal.This current output sensor of the two-wire system is provided with ...  
JP2005137190A
To provide a circuit for protecting a power switch, when a battery is connected in reverse.The power switch 10 includes a MOSFET having a body diode 10A. The MOSFET is connected in series with a load 20. The circuit includes a terminal, ...  
JP3652508B2
To protect the circuit components inside a drive by applying the level of a second power source to the inner circuit which is extremely much lower than the level of the first power source, using the first power source applied to the inpu...  
JP2005117878A
To solve the problem wherein no function of preventing the short-circuit between a positive terminal and a negative terminal (called the ground) is provided for an electrical apparatus that requires a DC current in a general electrical a...  
JP2005110389A
To provide a charger which enables a user to connect cables, without taking the polarity of battery terminals into consideration.The charger 1 is provided with a relay circuit 10 which becomes any of the first continuity state where the ...  
JP2005086899A
To provide a power window for a power window which can control the ascent or descent of window glass by detecting the sandwiching of an obstacle with accuracy even in case that an element for prevention of reverse connection of a battery...  
JP2005086971A
To provide an automatic power supply connector, wherein if an electrical apparatus supplied with power through a power line is connected or disconnected, the power line can be turned on/off in conjunction with the connecting or disconnec...  
JP2005057856A
To obtain a motor which prevents a motor winding from burning due to incorrect wire connection, etc. by noting that positive temperature coefficient thermistor has low cost and small size and an impedance is increased by self-heating.The...  
JP2005052391A
To prevent an accident caused by the wrong connection of a power supply cable of a motor for driving a water spray gun.The device has a first switch for feeding electric power to the motor for swinging the water spray gun to the right ti...  
JP2005051919A
To provide a power supply which can be protected when the voltage of a DC power supply increases excessively or the DC power supply is connected with reverse polarity and can reduce the cost by decreasing the number of circuit components...  
JP3615170B2  
JP3608483B2
To provide a protective device of a polar capacitor, which can suppress properly a surge generated in a load operation state and protect surely the polar capacitor, when a DC power supply is connected with reverse polarity. A mechanical ...  
JP2004538493A
The method and equipment for the connection surveillance of an electric supply unit are proposed, and it has a voltage primary detecting element (32), This voltage primary detecting element (32) asks for phase voltage (14), and has a cur...  
JP3601255B2  
JP3601844B2  
JP3597147B2  
JP2004328904A
To provide a voltage abnormality detecting device in which an AC power of an overvoltage is not inputted to a power board even if the AC power of an overvoltage is inputted to a power input part, and which can surely prevent the breakage...  
JP2004320836A
To prevent a malfunction due to a wrong connection by stopping supply of a power source if the wrong connection of a cable is made.A transmission side unit 10 comprises an oscillation part 14A which outputs a frequency fa when input term...  
JP3585016B2
To suppress the generation of high voltage by saturating the saturable transformer of a disconnected load before continuing a phase controller by the operation of the leakage inductance of an output transformer. A constant current contro...  
JP2004312996A
To provide a protective device against polarity reversal which overcomes a disadvantage of a well-known device.The device protecting a circuit against polarity reversal of a connection part to a DC power supply device includes a controll...  
JP2004297928A
To provide a connector device capable of assuring the safety of an information processing device which is different from a video apparatus, corresponding to a currently preset connection mode.A series circuit, consisting of a resistor 3 ...  
JP2004279053A
To provide a flow meter capable of preventing failure caused by cloud-to-ground discharge and normally and continuously operating.A ground potential E is measured. The presence or absence of the approach of thunder is determined on the b...  
JP3572112B2  
JP3570338B2
To provide a simplified and low-cost protection circuit for inverse connection of a power supply, which does not lower the power supply voltage for the connection of power supply. In an IC 11 of the SOI structure, a constant current circ...  
JP3559524B2  
JP2004229414A
To provide a power supply protective device wherein excess voltage is not transmitted to a loading side for a moment, even if the excess voltage exceeding rating is applied, and does not exert influence on the loading side at all, regard...  
JP3550781B2
PURPOSE: To provide a protective device which prevents a trouble such as the generation of a spark, damage by a fire or the like when an erroneous cable or an erroneous board is connected to a parallel connector and which can be returned...  
JP3545721B2
To reduce the number of components of a protection device arranged between a DC power source and a load circuit for protecting a problem which may be generated at the time of inverse connection. A protection device 10 is provided with a ...  
JP3542313B2
To provide a drive method of a semiconductor switching element for preventing large reverse current even during the start or the failure of a converter and suppressing the voltage change on the load. A first control signal corresponding ...  
JP2004153988A
To provide a stopping type exciting system that prevents a shaft vibrating phenomenon of a generator that occurs in the stopping type exciting system having a high gain and an overcurrent phenomenon that occurs in a system having unilate...  
JP2004153906A
To assure the prevention of a circuit element from being broken when there is wrong reverse connection by significantly improving the driving performance of a driver, and attain miniaturization and cost reduction.This preventing device c...  
JP3520291B2
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...  
JP2004104879A
To provide an abnormality detection device for a power apparatus capable of preventing the power apparatus from being burnt by a defective contact in a connector even when the current consumption of a load in the power apparatus is high....  
JP3511266B2  
JP3512188B2  
JP3506489B2
PURPOSE: To provide a protection circuit which protects an internal circuit in an integrated circuit against a reverse battery connection. CONSTITUTION: This protection circuit 10 includes a path transistor 14 which turns on, when a sour...  
JP2004507994A
[Solution means] A protection relay offers the protection of a circuit to the reverse polarity of a battery, or load interception. It is connected to switch contact so that operation is possible, and a relay coil is supplied by a reverse...  
JP3496956B2
PURPOSE: To provide a device and method in which only a load which is necessary to be re-activated can be automatically reactivated in the shortest time. CONSTITUTION: This device is provided with a central control unit 3 connected throu...  
JP2004040914A
To provide a charger excellent in safety by preventing the erroneous mounting of a battery, and a charging method.A charge control circuit 30 gets a voltage value V23 measured by a voltage measuring circuit 20 and performs switching betw...  
JP3488655B2
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...  
JP2004007853A
To prevent a detection control circuit from being broken when excessive voltage is applied or input voltage in an inverse direction is applied to a rechargeable battery, and to attain size and weight reduction without requiring a high cu...  

Matches 551 - 600 out of 1,748