Cov sensors sib thooj muaj lawv tus kheej qhov ntsuas hluav taws xob, uas yog siv los xyuas kom meej tias lawv txoj haujlwm nyob rau hauv kev thaj yeeb yuav tsis tshwm sim los ntawm qhov tsis muaj zog thiab tsis ruaj khov. Qhov voltage poob ntawm qhov sib thooj sensor yog qhov voltage ntawm lub sensor thaum lub sensor ntsuas thaum lub sensor qhib. Lub ripple voltage yog alternating voltage, uas yog superimposed nyob rau hauv lub khiav hauj lwm voltage, uas yog feem ntau qhia raws li tus lej lej ntawm qhov nruab nrab.
Qhov hloov zaus yog qhov tsim nyog loj ntawm ib lub xeev attenuation mus rau ib qho tsis muaj attenuation. Qhov sib thooj rau qhov cuam tshuam qhov hluav taws xob ntawm lub ntsuas hluav taws xob tuaj yeem xa mus rau qhov hluav taws xob luv luv, uas tuaj yeem ua rau lub sensor tsis muaj kev tiv thaiv. Qhov ncua sij hawm ntawm qhov hloov pauv no yog lub sijhawm xav tau rau lub zog hluav taws xob hluav taws xob sib thooj hloov mus ua haujlwm.
Thaum qhov kev khiav hauj lwm voltage nce, lub mem tes tsis nce, thiab qhov yuam kev ntawm lub teeb liab tso zis tuaj yeem cuam tshuam thaum lub sijhawm TV. Yog tias qhov kev txwv tam sim no dhau lawm, cov zis yuav raug kaw thiab tso tawm ib ntus kom txog rau thaum lub caij luv luv tso tawm. Qhov kev txwv no tiv thaiv DC sensor nrog kev tiv thaiv kev ua haujlwm los tiv thaiv cov khoom siv hluav taws xob hluav taws xob polarity.