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Hioki Denki Kabushiki Kaisha patents


Recent patent applications related to Hioki Denki Kabushiki Kaisha. Hioki Denki Kabushiki Kaisha is listed as an Agent/Assignee. Note: Hioki Denki Kabushiki Kaisha may have other listings under different names/spellings. We're not affiliated with Hioki Denki Kabushiki Kaisha, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "H" | Hioki Denki Kabushiki Kaisha-related inventors


Current sensor and measuring apparatus

A signal is outputted via a transmission path with little attenuation while eliminating high-frequency noise. A current sensor includes: a coil wound around a magnetic core through whose interior a measured electrical path is inserted, is connected to ground at one end, and outputs a current with a current value in keeping with a current value of a measured current flowing on the measured electrical path; a constant impedance filter whose input terminal is connected to another end of the coil, limits a frequency range of the current inputted from the input terminal to a desired frequency range, and outputs the detection current from an output terminal; a transmission path that is directly connected at one end to the output terminal; and a terminating resistance that is connected between another end of the transmission path and ground and converts the current flowing via the transmission path to a detection voltage.. ... Hioki Denki Kabushiki Kaisha

Solar cell testing apparatus and solar cell testing method

A solar cell testing apparatus is provided that tests bypass diodes in a solar cell string constructed by connecting a plurality of solar cell modules, which include solar cells and the bypass diodes, in series for failures in the open position. The solar cell testing apparatus includes a unidirectional element that is connected between a positive electrode and a negative electrode of the solar cell string, and a voltage applier that applies a test voltage across the positive electrode and the negative electrode of the solar cell string to which the unidirectional element is connected. ... Hioki Denki Kabushiki Kaisha

Current sensor and measuring apparatus

There is provided a ring-shaped magnetic core that forms a closed magnetic circuit that encloses a measured electrical path, a magneto-electric converter that detects magnetic flux inside the magnetic core and outputs an electrical signal with an amplitude in keeping with a quantity of the magnetic flux, a coil that is formed on the magnetic core and is supplied with a negative feedback current generated based on the electrical signal, and an internal shield member disposed at least in a vicinity of the magneto-electric converter and the coil. A first gap that increases a magnetoresistance of a closed magnetic circuit, which is a closed magnetic circuit for leakage flux that leaks from the magnetic core and includes the internal shield member, a part of the magnetic core where the coil is formed, and the magneto-electric converter, is formed in the internal shield member.. ... Hioki Denki Kabushiki Kaisha

Current sensor and measuring apparatus

A current sensor includes: a magnetic core that surrounds a detected object; a first sensor with a first sub-magnetic core incorporated in the magnetic core and a first winding wound around the first sub-magnetic core; a second sensor with a second sub-magnetic core incorporated in the magnetic core and a second winding wound around the second sub-magnetic core in the opposite direction to the first winding; a signal generator outputting signals to magnetize the first and second windings with inverted phases; a detector outputting a detection signal whose amplitude is proportionate to a current in the detected object based on the difference between first and second voltage signals generated in the first and second windings; and a waveform adjuster that is connected to at least one of the first and the second windings and adjusts the waveform of a voltage signal generated by the connected winding.. . ... Hioki Denki Kabushiki Kaisha

Voltage detecting probe and measuring device

A voltage detecting probe includes a first shield with an insertion concave formed at a front end; a second shield that has a base end of the first shield inserted thereinto; and a detection electrode formed of a conductive cylindrical member, covered with an insulating covering, and housed inside the first shield. The first shield or detection electrode moves along an axis when an operation lever is moved. ... Hioki Denki Kabushiki Kaisha

Averaging unit and measuring apparatus

An averaging unit includes: a plurality of sensor connectors to which current sensors are detachably connected; an averager that generates an averaged signal for at least two detection voltage signals outputted from the current sensors connected to the sensor connectors; and an outputter that outputs the averaged signal.. . ... Hioki Denki Kabushiki Kaisha








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