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JP6762067B2 |
To provide a relay drive circuit with fail-safe low voltage detection circuit requiring no fail-safe computer.A relay drive circuit 50 with fail-safe low voltage detection circuit, having a fail-safe low-voltage detection circuit 60 oper...
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JP6759441B2 |
A circuit breaker includes contacts movable between a closed position wherein a line terminal and a load terminal are in electrical communication, and an open position wherein the line and the load terminals are electrically isolated. A ...
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JP2020150787A |
To provide a relay array that disconnects an electronic device (e.g., an inverter or power converter) from a grid to ensure safety of or reduced damage to the electronic device or grid, on the basis of detection of a power interruption o...
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JP2020136005A |
To provide a drive circuit capable of quickly stopping an inductive load.A drive circuit 101 for driving a positive electrode side relay 41 that uses a coil 41a, comprises: a first switch SW1 configured to switch an energization state be...
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JP6745988B2 |
A relay control device (100) includes a coil (3), a movable iron armature (4) that is switched from an open state to a closed state when the coil (3) is excited, a switching current output circuit that applies first current for switching...
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JP2020118461A |
To realize the fault diagnosis of a digital output circuit while suppressing an increase in the size and cost of the digital output circuit and a decrease in reliability.An electronic apparatus 1a comprises: a digital output circuit prov...
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JP6733058B2 |
A controller 10 performs a first welding check and a second welding check in any order, and then performs a third welding check before a fourth welding check and also performs a fifth welding check before a sixth welding check. The first...
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JP6726613B2 |
To provide a switch operation device 1 capable of preventing erroneous detection of a signal level when water leakage or the like occurs.A switch operation device 1 includes: an output part P2 for outputting a switch signal: five electri...
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JP6726871B2 |
An electromagnetic relay has a contact device, an electromagnet device, a power supply unit, a switch unit, and a control unit. The contact device has a movable contact and a fixed contact. The electromagnet device has a coil and a movab...
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JP6724726B2 |
A power supply device may include a first power line configured to connect a power source to a load via a relay, at least one diode disposed on the first power line between the relay and the load, a second power line disposed in parallel...
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JP6717388B2 |
A relay device comprising a capacitor 32 included in a charger 100 and a discharge circuit that discharges electric charge charged to the capacitor 32, wherein the discharge circuit includes a discharge resistance 31, a first relay switc...
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JP6714094B2 |
The present application discloses a contactor coil control circuit, including a switch control circuit, a drive circuit, a fast turn-off circuit, a diode D1, a first MOS (Metal Oxide Semiconductor) transistor TR1 and a contactor coil. Th...
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JP6713291B2 |
A weld detection apparatus is mounted on a vehicle and measures first and second voltages of a first capacitor. The first voltage is measured when the first capacitor is charged while connected in series to a power supply and a ground of...
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JP2020096442A |
To enable failure of a relay to be easily detected.An ECU 107 has a diagnosis portion 120 which can detect ON failure of a relay 101 electrically connected between itself and an on-vehicle battery 100, and a microcontroller 108 controlli...
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JP6704241B2 |
To provide a power supply system capable of suppressing load dump and reducing power loss of a switch.A power supply system comprises a pair of power lines 2 (2p and 2n), and a switch 3. The power line 2 connects a DC power supply 10 and...
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JP6698456B2 |
A semiconductor integrated circuit for monitoring a switch, including: a first detection part that detects a state of a first switch; a second detection part that detects a state of a second switch; a sub-voltage monitoring part that mon...
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JP6701106B2 |
To provide a control apparatus capable of reducing damage in a contact point of a relay, without cancelling a switch instruction of the relay.A control apparatus comprises: a signal output part that outputs a first signal that turns off ...
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JP6699586B2 |
To provide a power supply circuit device that can make an abutting sound of mechanical relays unobtrusive and that can execute an appropriate opening/closing operation.A battery unit U has: switches 21 and 23 provided on electric paths L...
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JP6701950B2 |
A power supply control device controls the supply of power via a switch circuit and a relay contact. If the semiconductor switches are on and the relay contact is off, when a switch temperature of the switch circuit is at least a relay O...
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JP6694592B2 |
A relay device wherein power can be supplied to a load from at least two power storage units and can detect when an abnormality such as an open-circuit failure occurs in a path of one of the power storage units, accurately. A control uni...
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JP2020068179A |
To provide a relay circuit and a steering lock device capable of securing accuracy of foreign substance removal by arc.A relay circuit 19 includes a boosting section 28 (charge pump 31) capable of boosting drive voltage Va and outputting...
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JP6682003B2 |
According to an embodiment of the present invention, a power conversion device (100) includes: a capacitor (8b) that charges or discharges electric charges when a voltage is supplied from a power supply (1); a relay (5a), which is dispos...
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JP6677250B2 |
[Problem] To provide a DC circuit capable of ensuring safety even if a short circuit should occur due to the deterioration time of a semiconductor switch when using said semiconductor switch to suppress arcing. [Solution] Provided is a D...
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JP6676200B1 |
To provide a relay device and a control method of a relay device for suppressing the generation of noise when switching a movable contact and a fixed contact in a non-contact state to a contact state. A relay device 1 includes a coil por...
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JP6678195B2 |
A relay driver circuit is connected between an upper stage relay and a lower stage relay and is configured to be driven in response to driving of the upper relay. The relay driver circuit drives the lower stage relay. The relay driver ci...
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JP2020042995A |
To determine whether a relay is deteriorated even during an operation of an electronic device equipped with a relay.A relay deterioration determination apparatus 10 includes a detection unit 100 that detects an output voltage or an outpu...
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JP6668518B1 |
To provide a relay device and a control method of the relay device, which suppress the generation of noise and suppress the arc discharge with a simpler configuration. A relay device (1) includes a coil unit (10), a fixed contact (21), a...
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JP6660708B2 |
To provide an electromagnetic relay circuit capable of immediately establishing an electrical connection in simple configuration even if dust or an ice film is deposited to a contact.An electromagnetic relay 16 comprises: a common termin...
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JP6662226B2 |
To provide a deposition prevention device capable of accurately detecting deposition of a relay connection point.The present invention relates to a deposition prevention device that prevents deposition of an openable/closable first relay...
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JP6658621B2 |
A control circuit for a switch device including a first switch element including a movable contact and a drive coil that controls the movable contact of the first switch element, the control circuit for returning the movable contact when...
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JP6641439B1 |
To accurately eliminate freezing of an electromagnetic relay without newly providing a large-scale device or circuit while suppressing energy loss without increasing the number of times of turning on / off the electromagnetic relay. Prov...
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JP6638069B2 |
The present invention relates to a system and a method of preventing a contactor from being abnormally opened through a real-time detection of an operation, in which a contactor coil control unit, which applies an operation signal to a c...
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JP6638070B2 |
A power-saving circuit for a contactor comprises a coil drive circuit, and further comprises a rectification and filtering circuit, a PFC circuit, an auxiliary power supply circuit, and a square wave generation circuit. The square wave g...
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JP6623794B2 |
To reduce probability of misdetection when fixation at contact points of relays provided on a path between a battery and an electrical apparatus is detected, in a vehicle that has a charging plug connected with an external AC power suppl...
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JP2019537220A |
The contactor includes a plurality of switches mechanically coupled to the actuator. The actuator is movable between the operating position and the trip position. A switch that is closed at the operating position opens at the trip positi...
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JP6620674B2 |
With a power supply control device, if semiconductor switches of a switch circuit are on and a relay contact is off, a controller determines whether or not a switch electric current detected by an electric current sensor is at least a th...
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JP6620242B2 |
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JP6614452B2 |
The present invention realizes a relay device that can prevent malfunction due to occurrence of reverse flow of current in any of paths. A control unit that is provided in a relay device functions as a switching control unit, keeps an ON...
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JP6617023B2 |
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JP6611370B2 |
The disclosure relates to a method for monitoring an electromechanical component of an automation system. The method may include acquiring of a mechanical state variable of the electromechanical component, acquiring of an electrical stat...
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JP2019192430A |
To provide a load drive device capable of reducing the number of components of at least a part of a load drive circuit, while reducing the mounting area and restraining weight increase.A load drive device includes a main relay 20 and a s...
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JP6598604B2 |
It is determined whether a performing condition for first welding detection is satisfied. If the performing condition for the first welding detection is satisfied, the first welding detection is performed. On the other hand, if the perfo...
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JP2019186077A |
To provide a power source cutoff device that can suppress the failure of a contact point drive unit due to an unstable coil voltage.A power source cutoff device 2 includes a cutoff unit 21 that is connected to power supply lines PL1 to P...
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JP6588697B2 |
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JP2019164963A |
To detect open abnormality of positive electrode and negative electrode relays.When an ON command is outputted to a positive electrode relay, first and fourth relays are turned ON and second and third relays are turned OFF. Thereafter, t...
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JP2019160487A |
To provide a configuration capable of detecting an ON state and an OFF state of a main switch in a power supply circuit having a self-holding circuit.A power supply circuit 1 comprises: a main switch SWA; and a self-holding circuit 20 wh...
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JP6577928B2 |
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JP2019154130A |
To provide a power monitoring system capable of more certainly detecting charging and non-charging states of a power supply line to be maintained, a switchgear, a program for the power monitoring system, and a power monitoring method.A p...
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JP6571114B2 |
Disclosed is a high-voltage AC capacitor for reactive power compensation of 10kV-35kV power grid, and in particular to a high-voltage AC capacitor with a high-voltage switching switch provided therein, as well as a structure for prolongi...
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JP6570243B2 |
A switch protection circuit includes a discharging circuit and, optionally, a clamping circuit. The discharge circuit operates prior to the switch completing the switching action to discharge capacitance from a signal line of a cable con...
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