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Patent Searching and Data


Matches 601 - 650 out of 1,753

Document Document Title
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...  
JP2003346758A
To provide a power supply circuit that does not require a direction of the battery so that an accident such as a trouble or failure, leakage of liquid, or burst of the equipment may not happen when the direction of the battery is wrong. ...  
JP2003339187A
To appropriately control an electrically powered hand tool machine by monitoring its driving parameters.A first sensor is provided to detect a first drive parameter of an electrical load and/or a power supply unit. In order to control th...  
JP2003339117A
To prevent an electronic device from breaking down, even if a battery is inserted in reverse into the electronic device.This breakdown preventing circuit (30) for an electronic device includes a cut-off circuit for cutting off a current ...  
JP2003319554A
To prevent damage on an apparatus by realizing that power sources of AC100 V and AC200 V are accidentally alternately wired to the same apparatus in an initial construction.An erroneous wiring protector of a bath room dryer fan comprises...  
JP2003308123A
To provide a power source protection circuit capable of stopping the supply of a power to electric equipment when a DC power source is turned not only to an overvoltage but also to a reduced voltage.A first circuit 10 is configured so th...  
JP3455576B2
PURPOSE: To obtain a current-feeding circuit that is suited for the throwing connection of a load with a capacitive load component, by operating a closing connection current one-limiting circuit depending on a voltage difference between ...  
JP2003264933A
To provide an input protection circuit capable of protecting an electrical apparatus which operates on direct-current power without fail even if the electrical apparatus is used to meet recent needs.The protection circuit 1 is for protec...  
JP2003264930A
To eliminate a problem of processing accuracy (detecting accuracy) being influenced by a deterioration in insulation with time, and enhance certainty and reliability in detection of a break.A signal output portion 2so of a first signal p...  
JP2003527808A
(57) Summary book invention relates to the safe lockout switching system for preventing the reboot which an electric machine does not expect. This system is installed into the main power circuit of an electric machine. There, the non-ele...  
JP3447161B2
To surely perform grounding of a stabilized power circuit, while preventing an overcurrent due to a short-circuit accident to a motor driver provided in an air conditioner for a vehicle. A ground terminal 4a of a motor driver 4 controlli...  
JP2003230227A
To subject alternating-current input to voltage control or power control to supply a load with the input with reduced alternating current and further prevent erroneous connection of input terminals and output terminals.A power saving dev...  
JP2003217407A
To provide a method for confirming ground-closing of a grounding device and a ground-closing confirmation device which allow reliable and easy confirmation of the grounding state of a system circuit both during operation and shutdown.A g...  
JP3426342B2
PURPOSE: To protect a drive system circuit, a welding head and an article to be welded. CONSTITUTION: When a line 30a or 30b is disconnected, an OR circuit 24 outputs a signal FB. When the lines 30a, 30b are connected reversely and an ou...  
JP2003520933A
(57) When the work of a summary subject setup, a maintenance, repair, etc. Is done in the dangerous area of the mechanical system, certain and safe protection is secured. Solution means Protection equipment (12) has a central power suppl...  
JP2003189467A
To make it unnecessary to replace a protective device (fuse) every time when an erroneous wiring 6 is produced.This I/O circuit has a transistor, a drive circuit generating the base signal of the transistor, and a protective device prote...  
JP2003189688A
To provide a controller for AC servo motor free from the danger of burnout in DC buses.The controller for AC servo motor comprises an AC power inputting means 1; a DC power inputting means 3; a means for selecting specifications for AC p...  
JP2003185693A
To provide a phase discrimination apparatus for a distribution line which is easy to handle, whose structure is simple and low-cost and which can be applied to the discrimination of not only the phase of the distribution line such as an ...  
JP2003165399A
To prevent an arc discharge and an electrical shock from occurring when a connector connection part is handled.This power cutout system for vehicle comprises a power cutout means 13 having a power cutout part 15 installed in a vehicle el...  
JP3411072B2
PURPOSE: To protect a DC power supply device from an overvoltage by detecting the overvoltage when a positive output terminal short-circuits to a negative output terminal and a negative output is clamped to the positive side. CONSTITUTIO...  
JP2003516704A
(57) Summary means for solving subject book invention is a method for suppressing the damage caused by the large current or the different voltage besides a standard at the time of connection of two circuits. For this reason, a switch (Q)...  
JP2003125531A
To provide a safety device for power supply circuit in hybrid vehicle, capable of preventing a connection apparatus and a human body from being damaged and a disaster, such as fire from occurring, if the device is disconnected from the c...  
JP2003111271A
To prevent an injury from being produced when an overrating voltage is fed to power terminals of an electronic apparatus.A protective circuit 6 is configured so as to comprise a PT thermistor 10 connected in series to the power terminals...  
JP2003111277A
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 ...  
JP3387631B2
PURPOSE: To prevent it from being damaged by a reversely connected battery biasing a MOSFET into nonconductive condition, when the battery is reverse connected. CONSTITUTION: When a battery 11 is connected normal, a MOSFET 1 is turned of...  
JP3384834B2  
JP2003070158A
To allow easily determine whether a DC voltage is applied onto an AC distribution line so as to quickly restore a DC device which does not operate although not abnormal after a line-to-ground fault.Each phase on the secondary side of a t...  
JP2003061244A
To provide an apparatus such as a copying machine, etc., having a service outlet which can take out a prescribed required voltage and be stopped to avoid an accident, even if it is used in an area where a power supply voltage is signific...  
JP2003052125A
To provide an electromechanical appliance, which can decide whether or not a plurality of its divided blocks are connected properly to power supply lines, is easy to install, and has safety ensured. If power input lines 110 and 210 are c...  
JP2003047287A
To provide a protective circuit which can prevent an overcurrent from flowing to a transistor in case that circuit structure is connected the other way for its plus and minus to a power source, while contriving a countermeasure to the su...  
JP3376775B2
To provide a hybrid vehicle avoiding the control infeasibility of a generator due to the abnormal rotation of a driving wheel. An engine 11, a generator 16, and a drive output shaft are connected via a planetary gear unit, and the rotati...  
JP2003037933A
To protect a circuit when a power supply is reversely connected in polarity and achieve a structure durable against noise. A P channel FET 3 for protecting the circuit when the power supply is reversely connected in polarity, is provided...  
JP3367254B2  
JP3365195B2  
JP2002374621A
To solve such a problem that, with respect to equipment which adopts redundant configuration, or two systems, for example 0-system and 1-system for primary power input, if one system is connected normal and the other system is connected ...  
JP2002369377A
To provide an electronic apparatus that restrains an overcurrent caused by the wrong wiring of a power supply from affecting other electronic apparatus through signal ground lines. This apparatus is characterized by having a terminal for...  
JP2002359920A
To provide a protective device which can protect a system, supplying a power and electric signals to external devices, not only from a 0-Ω grounding but also from ohmic short circuiting. This protective device for a power supply system ...  
JP2002542610A
(57) Summary book invention relates to the protection circuit which protects the electronic device which is a drive element, for example from a polar error and neutral conductor destruction. The 1st protection diode (D1) is arranged on t...  
JP3349984B2  
JP2002335626A
To apply the necessary voltage to a device power supply circuit by reducing a voltage drop in a backward current preventing circuit connected between a battery and the device power supply circuit.The drain of a MOSFET 3 is connected to a...  
JP2002324637A
To provide an adapter that enables to connect a power supply plug of DC electric apparatus into the existing receptacle and prevents a reversed polarity voltage from being applied.The housing 11 of a conversion adapter 10 is equipped wit...  
JP3338770B2
To prevent malfunction when the output voltage of a switching power circuit is increased and thereby enhance the reliability of a system, by inhibiting short circuit protecting operation during a period from time when power is supplied t...  
JP2002315186A
To provide a method for surely detecting the connection of equipment such as a sensor and an actuator to a different connection in a control apparatus.First in a step S11, a counter is reset. Then in a step S12, the ID code number of equ...  
JP2002297250A
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 s...  
JP2002281663A
To improve the yield of a product and manufacturing efficiency by preventing damage of the product, when an abnormal voltage is applied to a power source of the product.A power supply stopping apparatus is provided with a variable voltag...  
JP2002268756A
To prevent the generation of any abnormality in a device when a part of power sources are down, and the other power sources are active in a device to which a power is simultaneously supplied from a plurality of power sources.In a printer...  
JP2002271973A
To eliminate influence on the ground protection function with a flashing device.An operation power supply power can be obtained by connecting both ends of a primary coil 12 of a transformer between AC power feeding terminals 14, 15 via a...  
JP3326255B2  

Matches 601 - 650 out of 1,753