0000000000084305

AUTHOR

Sergio Iván Ravelo Arias

showing 2 related works from this author

Electronic Energy Meter Based on a Tunnel Magnetoresistive Effect (TMR) Current Sensor

2017

In the present work, the design and microfabrication of a tunneling magnetoresistance (TMR) electrical current sensor is presented. After its physical and electrical characterization, a wattmeter is developed to determine the active power delivered to a load from the AC 50/60 Hz mains line. Experimental results are shown up to 1000 W of power load. A relative uncertainty of less than 1.5% with resistive load and less than 1% with capacitive load was obtained. The described application is an example of how TMR sensing technology can play a relevant role in the management and control of electrical energy.

tunnel magnetoresistance; current sensor; energy meter; power measurement; wattmeter; internet-of-thingsEngineeringMagnetoresistancepower measurementPower factorlcsh:Technology01 natural sciencesArticlelaw.inventionElectricity meterlaw0103 physical sciencescurrent sensorinternet-of-thingsGeneral Materials ScienceCurrent sensorlcsh:Microscopylcsh:QC120-168.85wattmeter010302 applied physicslcsh:QH201-278.5lcsh:Tbusiness.industrytunnel magnetoresistance010401 analytical chemistryElectrical engineeringWattmeterAC powerenergy meterLine (electrical engineering)0104 chemical sciencesTunnel magnetoresistancelcsh:TA1-2040lcsh:Descriptive and experimental mechanicslcsh:Electrical engineering. Electronics. Nuclear engineeringlcsh:Engineering (General). Civil engineering (General)businesslcsh:TK1-9971Materials; Volume 10; Issue 10; Pages: 1134
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Total ionizing dose (TID) evaluation of magnetic tunnel junction (MTJ) current sensors

2015

Abstract The paper shows an experimental study to know the behaviour of tunnel magnetoresistive effect-based current sensors configured in a Wheatstone bridge in response to irradiation. In particular the sensitivity, hysteresis, output offset voltage and input resistance are discussed when the sensors are submitted to a total irradiation dose of 43 krad with 36 krad/h dose rate. The same electrical parameters were studied subsequently once the irradiated sensors were submitted to an 80 °C annealing process. The studied TMR sensors are applied in a switched-mode power converter for space application.

Wheatstone bridgeMaterials scienceInput offset voltageMagnetoresistanceAnnealing (metallurgy)business.industryMetals and AlloysElectrical engineeringCondensed Matter PhysicsSurfaces Coatings and FilmsElectronic Optical and Magnetic Materialslaw.inventionTunnel magnetoresistancelawAbsorbed doseOptoelectronicsCurrent sensorIrradiationElectrical and Electronic EngineeringbusinessInstrumentationSensors and Actuators A: Physical
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