Разликата между сензор на Хол и трансформатор на Хол

Jul 14, 2020

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ThedifferencebetweenHallsensorandHalltransformer
ManypeoplewillthinkthatHallshavethesameworkingprinciple.Infact, therearemanykindsofHalls, suchasHall-typecurrentsensors, Halltransformers, Hallmagneticsensors,
Нека' разбере разликата между HallTransformerandHallSensor
На практика, theHallsensorisamagneticsensor.Theycanbeusedtodetectthemagneticfieldanditschanges, andcanbeusedinvariousfieldsrelatedtothemagneticfield.TheHalldeviceisbasedontheHalleffect.
AccordingtothefunctionofHalldevices, theycanbedividedinto: HalllineardevicesandHallswitchingdevices.Theformeroutputsanalog, andthelatteroutputsdigital.
Accordingtothenatureofthedetectedobjects, theirapplicationscanbedividedinto: directapplicationandindirectapplication.Theformerdirectlydetectsthemagneticfieldormagneticcharacteristicsoftheobjecttobedetected,
Thelatteristodetecttheartificiallysetmagneticfieldonthesubject, andusethismagneticfieldasthecarrierofthedetectedinformation.Throughit, manynon-electricandnon-magneticphysicalquantitiessuchasforce, въртящ момент, налягане, стрес, позиция, преместване, скорост, ускорение, ъгъл, angularvelocity, numberofrevolutions, rotationspeedandthetimewhentheworkingstatechanges и т.н., convertedintoelectricityfordetectionandcontrol.ThefollowingfigureistheworkingdiagramofHallmagneticsensor.
Transformersusetheprincipleofelectromagneticinduction, thatis, theprinciplethatachangingmagneticfieldgeneratesanelectricfield.Thetwocoilsarewoundonthesameironcore, andthesecondarywindinginducesavoltageorcurrentproportionaltotheprimarywinding.Therefore, itisalsocalledtheprincipleofmutualinductanceortransformer.Transformersaredividedintovoltagetransformers (PT) andcurrenttransformers (CT), whicharemainlyusedinACcircuitsandmostlyusedinpowersystems.Themainfunctionistocollectprotectionsignalsandmeasuresignals.Theprincipleistheprincipleofthetransformer.

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