Potentiometers siv rauindustrial tuav, tseem hu ua angular displacement sensors, muaj ntau dua hauv kev lag luam kev lag luam. Raws li ib qho khoom siv ywj pheej ntawm tus kov kom paub txog qhov voltage analog tso zis, nws hloov pauv cov khoom hloov pauv lossis lwm yam tsis muaj hluav taws xob uas tuaj yeem hloov pauv mus rau hauv kev hloov pauv mus rau qhov kev hloov pauv ntawm cov nqi tiv thaiv uas muaj qee qhov kev sib raug zoo, yog li ua rau muaj kev hloov pauv ntawm cov zis voltage; cov hauv qab no yog lub peev xwm Lub hauv paus ntsiab lus ua haujlwm ntawm cov cuab yeej tau piav qhia meej.
Ua ntej, cov qauv ntawm potentiometer Potentiometers siv rau hauv kev lag luam tes feem ntau muab faib ua 3-pin thiab 4-pin hom; tus qauv ntawm 3-pin potentiometers feem ntau yog tsim los ntawm ib lub cev resistor, ib tug rotating ncej, zawv zawg caj npab, zawv zawg kawg, thiab ib tug solder tab; tus qauv ntawm ib tug 4-pin potentiometer yog piv nrog cov ntawm 3-pin potentiometers. Lub potentiometer muaj ib qho nruab nrab qhov kawg (tseem hu ua qhov chaw kais); Feem ntau tus kov feem ntau yog siv ib tug 3-pin potentiometer, uas yog siv nyob rau hauv nruab nrab kov (uas yog, tus kov yog nyob rau hauv nruab nrab txoj hauj lwm nyob rau hauv ib txwm tej yam kev mob, thiab cov zis hloov thaum tus kov yog shaken rau pem hauv ntej thiab rov qab) Thiab lub unilateral kov (uas yog, tus kov yog ib txwm nyob rau hauv txoj hauj lwm sab, tus kov tsuas yog yuav shaken rau pem hauv ntej los yog rov qab mus rau ib tug txheej ntawm yuav tsum tau variable qhov tseem ceeb); thiab tus 4-pin potentiometer feem ntau tsis yog siv rau tus kov unilateral, vim tias nws muaj qhov nruab nrab kais kawg (qhov chaw muaj qhov chaw tuag), thiab 4-pin potentiometer tuaj yeem suav tias yog ob. pawg ntawm parallel active resistors los ntawm cov qauv, yog li nws muaj peev xwm tso tawm ib txheej ntawm symmetrical variable qhov tseem ceeb.
Thib ob, kev xaim ntawm potentiometer Txoj kev sib txuas ntawm 3-pin potentiometer: yog tias nws siv los ua qhov sib txawv ntawm qhov sib txawv voltage, ib kawg yog txuas nrog lub input voltage, zawv zawg kawg txuas nrog cov zis, thiab lwm kawg yog grounded; Yog hais tias nws yog siv los ua ib qho kev sib txawv ntawm cov resistor, ib qho kawg yog txuas nrog lub input voltage, zawv zawg kawg txuas nrog cov zis, thiab qhov kawg tuaj yeem sab laug ntab, lossis txuas nrog zawv zawg kawg. Vim hais tias tus 4-pin potentiometer muaj ib qho ntxiv qhov kawg kais kawg, nws feem ntau yog siv nyob rau hauv tus kov uas yuav tsum tau ib tug nruab nrab qhov chaw tuag, los yog yuav tsum tau ib tug taag nruab nrab cov zis tus nqi, los yog outputs ib tug symmetrical variable nqi. Txoj kev xaim: Thaum siv qhov nruab nrab qhov chaw tuag, nws yog tib yam li qhov sib txawv ntawm qhov sib txuas ntawm lub siab ntawm 3-pin potentiometer, tshwj tsis yog tias qhov nruab nrab kais kawg raug tshem tawm (yog tias cov zis txuas nrog, cov zis hluav taws xob yog ib nrab. ntawm qhov input voltage, thiab tsis hloov nrog kev co ntawm tus kov); Symmetrical sib txawv tus nqi sib txuas: ob qhov kawg tas yog luv luv los txuas rau cov khoom siv hluav taws xob, qhov nruab nrab kais kawg yog grounded, thiab zawv zawg kawg txuas nrog cov zis. Nyob rau lub sijhawm no, tus kov tso tawm tib yam rau pem hauv ntej thiab rov qab los ntawm qhov chaw nruab nrab.
