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WO/1988/006364A1 |
A three-conductor booster cable assembly (100) for connection of a source of DC power to the terminals of a battery requiring recharging. The uniqueness of this assembly is based upon a combination of features including (a) modification ...
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WO/1986/002500A1 |
A method and a device for detection of an electric load (9) for the purpose of allowance of its connection to a power voltage from an electric voltage source over electric conductor means (7, 8). They are normally kept free from power vo...
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WO/1986/001299A1 |
Circuit for continuously controlling the grounding resistance of electric apparatuses of which the electrically conducting components susceptible of being touched, such as the casing, are connected by a grounding wire to a ground potenti...
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WO/1984/002808A1 |
This invention pertains to an apparatus (10) for monitoring and protecting a plurality of contactor coils (14A-E) and coil drivers (16A-E) from damage owing to short circuits, and preventing the concurrent energization of more than a pre...
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JP2024046842A |
[Problem] To reduce the output voltage to 0V in a short time. A semiconductor device according to an embodiment includes first and second terminals, first to fourth transistors, and a control circuit. The first transistor includes a firs...
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JP2024041854A |
An object of the present invention is to provide a reverse connection damage prevention circuit that does not require a separate circuit for detecting the voltage of an input power source and has low voltage drop and power loss. [Solutio...
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JP7449805B2 |
A protection function of an electronic device is realized with a lower cost. A load drive circuit 102 includes: transistors Qa and Qb for protection of an N-channel type connected between a power source terminal P1 and a power source end...
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JP2024022167A |
The present invention provides a technology that can suppress damage to low pressure loads. A power supply device disclosed in this specification is provided between a battery, an external interface that is electrically connected to the ...
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JP7422315B2 |
To easily detect incorrect wiring of a cable beforehand.A connection unit (30) has a positive terminal and a negative terminal that are to be connected to a positive terminal and a negative terminal of a storage unit, and between a posit...
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JP7413860B2 |
In a power feeding control device, N-channel first FET and second FET are located in a current path for current flowing from a positive terminal to a negative terminal. The drain of the first FET is located downstream of the source. The ...
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JP2023180695A |
To identify an area where insulation resistance has decreased, without reducing the operating rate of an electrical power system.In an electrical power system P, a plurality of boost converters 2 that are converted from three-phase inver...
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JP7375398B2 |
To provide voltage-current phase measurement of the secondary circuit of a transformer for meters with which, when confirming the connecting state of a transformer for meters or a protective relay in a secondary circuit, it is possible t...
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JP7366088B2 |
Ajumper cable device, comprising an input port, two clamps, a main controller, a clamp polarity detection module and a clamp connection module. The input port is configured to be connected to a startup power source. The clamps are config...
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JP7339690B2 |
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JP2023102646A |
To provide an electrical instrument which can prevent inflow of the excessive current via a lead wire and an on-vehicle system having the electrical instrument.An electrical instrument 10 is mounted on a vehicle C. A ground terminal (fir...
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JP2023094570A |
To continue working while the electricity is flowing without turning off the power to the machine.A wall, an electric floor and electric shoes are combined so that a potential difference is generated between the surface of the wall that ...
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JP2023094414A |
To provide a power supply control device that suppresses hazardous power supply.In a system that includes a power source, a power receiving device that operates by receiving power from the power source, and a power supply cable that conn...
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JP2023073780A |
To provide a power supply connection authentication system which reduces possibility of causing a fault as much as possible even if a power supply adapter and an electronic apparatus are erroneously connected and to provide the power sup...
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JP2023059475A |
To suppress erroneous operation and malfunction of an in-vehicle power supply.An in-vehicle power supply system 1 comprises: a voltage conversion unit 2; a positive electrode input end 3; a positive electrode output end 4; a switch eleme...
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JP7259745B2 |
An energy storage apparatus includes: an external terminal connected to an energy storage device; a current cut-off device disposed on a current path connecting the energy storage device and the external terminal to each other; a voltage...
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JP2023048732A |
To provide an interlock system, etc., capable of safely stopping a high-voltage system by detecting the presence of a high-voltage system load, to which power is not supplied from a high voltage power source because of a disconnection of...
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JP2023043643A |
To detect an abnormality of a short circuit protection element by a simple device configuration, and reduce power consumption.An abnormality detection device 10 includes: a power supply unit 11 that supplies power source power to a termi...
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JP2023036781A |
To provide a power supply circuit, a printing device, a device protection method, and an electrical device that enable a user to quickly recognize the situation when a voltage outside a predetermined range is applied to the electrical de...
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JP7224100B2 |
To suppress a circuit area of a reverse connection protection circuit.A switching element 51 includes a power supply side terminal 51a electrically connected with a power supply 2, a load side terminal 51b electrically connected with a l...
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JP2023016640A |
To provide an electronic control device capable of suppressing increase in physical size.An electronic control device comprises: a first terminal 21 for receiving a control signal; a second terminal 22 connected with a low potential side...
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JP2023012972A |
To provide an electronic device having a reverse polarity protection circuit capable of preventing damage of a circuit element in advance.An electronic device having a reverse polarity protection circuit includes: an ideal diode circuit ...
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JP7163826B2 |
A charger includes: a relay provided between an input line and a conversion circuit; a voltage sensor that detects AC voltage input to the input line; and a controller that calculates effective value and frequency of the AC voltage based...
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JP7138206B2 |
A smart battery device is provided. The smart battery device is applied to an electronic device. The smart battery device provides power for the electronic device. The smart battery device includes a battery pack, a sensing resistor, and...
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JP2022111661A |
To provide a reverse connection protection circuit that reduces a negative withstand voltage required when a negative surge voltage is applied in a case in which a reverse connection protection element is turned off.A booster circuit 53 ...
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JP2022086675A |
To provide a novel, improved protection circuit that can suppress a failure in a switching element even if the protection circuit is reversely connected to a power source and a ground by mistake, for example.One example of the protection...
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JP2022526703A |
The present disclosure relates to a battery module (300) including a first charging terminal (203) and a second charging terminal (204) for connecting the battery module to an external power source (250) or load (350). The battery module...
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JP7067033B2 |
Provided is a power supply control apparatus, a power supply control method, and a computer program that can prevent an extremely large current from flowing via a switch. A power supply control apparatus is configured to control power su...
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JP2022524264A |
A method and device for monitoring the insulation between a DC bus and protective ground, where the bus is connected to a DC power source. The terminals of the power supply are connected to the protective ground by the first electrical n...
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JP2022066027A |
To provide a semiconductor device in which current flowing through a load can be suppressed even when a battery is reversely connected.A semiconductor device includes first and second MOS transistors provided between a first line to whic...
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JP2022066028A |
To provide a semiconductor device in which current flowing through a load can be suppressed even when a battery is reversely connected.A semiconductor device includes first and second MOS transistors connected in series and provided betw...
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JP2022059758A |
To provide a load drive system and a control device that enable standardization and downsizing of a drive unit.A load drive system 1 includes a load 5, a motor load drive unit 3 that drives the load 5, and a power supply BOX 2 that suppl...
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JP7026016B2 |
The power transistor QN1 is provided between the positive power supply terminal Pi2(+) and the load-driving terminal Po2(+), and has a source and a back-gate coupled to the positive power supply terminal Pi2(+). The power transistor QN2 ...
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JP7019373B2 |
To reliably detect a failure of a reverse connection protective element.A power supply device has a plurality of semiconductor switches, driving means (FET 19-21, 23, and 24) for driving a load (motor 30) by an on/off state of the semico...
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JP2022502648A |
The present invention is an electrical device (1) that bears an unbalanced load, and is a connection portion (U, V) of the device (1) connected to a plurality of phase lines (L1, L2, L3) of the distribution network (3). , W) relating to ...
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JP2021193868A |
To protect a power source device without loosing the convenience of a user.A power source device according to one aspect of the present invention converts an AC voltage inputted from a commercial power source, to an output DC voltage. Th...
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JP6964382B2 |
Electric power devices and control methods are provided which automatically select a line voltage or phase voltage of an AC voltage supply. The electric power device includes a switchable circuit, a sensor and a switch control. The switc...
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JP3234722U |
To provide a grounding circuit capable of more reliably selecting a neutral to be grounded from an AC commercial power supply line and neutral. A grounding circuit includes a grounding circuit built in a main body 11 of a grounding devic...
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JP2021148469A |
To provide a reverse connection breakage prevention circuit that causes a less drop voltage and a less power loss and does not need an additional circuit to detect a voltage of an input power source.The present invention includes: a firs...
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JP6925521B2 |
A protective circuit includes an input that provides a first supply voltage, a voltage regulator that provides a second supply voltage based on the first supply voltage, a measuring device that identifies an impedance of the voltage regu...
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JP6891835B2 |
Provided is a control device that stops the power supply when the first FET is short-circuited. In the control device, a boost circuit increases the voltage of one end of a resistor on the boost circuit side to a predetermined voltage th...
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JP6856808B2 |
A control device for an electrical protection circuit for use in an alternating current system including a transformer is disclosed. An example system includes a first measurement probe, a second measurement probe configured to measure a...
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JP2021048747A |
To provide an electric oil pump provided with a control substrate capable of preventing destruction of a MOSFET 123 due to overvoltage at a lower cost than when using a MOSFET with high withstand voltage.A control substrate 101 includes:...
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JP2021034838A |
To provide an output device in which a period where an ohmic value of a semiconductor switch is large is short.In an output device 11, a current is output through a semiconductor switch 20. In regard to the semiconductor switch 20, an oh...
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JP2020182332A |
To reduce the possibility of a reverse connection protection semiconductor relay malfunctioning when a battery is reversely connected.Reverse connection protection relays 41 and 42 are provided in each of power supply systems that indivi...
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JP2020178510A |
To provide a charging system that enables users to easily recognize that a charger has failed.A charging system of the present invention includes: an autonomous movable body including a battery; and a charger for charging the battery by ...
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