Hauv daim ntawv thov ntawmindustrial ua hauj lwm handles, muaj ob lub ntsiab lus tso tawm siv los ntawm kev tswj hluav taws xob: potentiometer-type output thiab Hall-type output.
Qhov txawv ntawm hom potentiometer thiab Hall hom tau piav qhia hauv tsab xov xwm dhau los, uas yog kwv yees li hauv qab no:
Hall hom yog tus cwj pwm los ntawm kev ua haujlwm, tsis muaj kev sib cuag, thiab lub neej yuav ua tau ntev dua. Tsis haum rau siv nyob rau hauv lub sij hawm nrog hlau plua plav.
Hall type potentiometer
Hom potentiometer yog tus cwj pwm los ntawm passive, tiv tauj hom kev ua haujlwm, thiab nws qhov kev ruaj ntseg txheeb ze rau Hall yuav zoo dua. Tsis haum rau cov haujlwm tshwj xeeb thiab cov khoom siv uas siv ntau heev.
Lub kaum sab xis potentiometer
Hauv qhov teeb meem no, peb yuav piav qhia meej tias lub potentiometer siv li cas.
Kev ua haujlwm ntawm lub potentiometer yog manually hloov qhov tsis kam nyob rau hauv Circuit Court lossis ntsuas qhov sib txawv ntawm qhov hluav taws xob hauv Circuit Court; Yog li ntawd, lub potentiometer yog hu ua voltage metering device. Potentiometers yog cov khoom siv hluav taws xob tsis muaj zog, piv txwv li lawv tsis tsim lub zog, lawv tsuas yog khaws lossis dissipate lub zog hauv daim ntawv ntawm hluav taws xob tam sim no. Lub potentiometer yog ntau yam khoom siv; Nws yog siv rau lwm lub hom phiaj ntxiv rau kev ntsuas qhov sib txawv, xws li kev faib hluav taws xob, sib piv cov hluav taws xob hluav taws xob ntawm cov roj teeb, thiab raws li qhov sib txawv ntawm cov resistor.
Raws li qhia saum toj no, yog hais tias ib tug tas li tam sim no ntws los ntawm lub resistor lub cev, qhov voltage poob nyob rau hauv ib feem ntawm lub cev resistor yog proportional rau qhov ntev ntawm lub wiper (zoo tagnrho). Yog li ntawd, yog tias qhov sib txawv ntawm ob qhov chaw ntawm lub wiper yog xoom, tsis muaj tam sim no ntws los ntawm Circuit Court. Nyob rau hauv ib lub potentiometer, qhov input voltage yog siv rau tag nrho qhov ntev ntawm cov hlau tsis kam thiab cov zis hluav taws xob yog ntsuas ntawm qhov zawv zawg sib cuag thiab qhov kawg ntawm lub voj voog. Txoj hauj lwm ntawm tus adjuster (sliding contact) yog sib txawv ntawm qhov ntev ntawm cov hlau tsis sib xws kom pom qhov xoom txoj hauj lwm.
Hom potentiometer feem ntau yog siv nyob rau hauv lub sijhawm uas tus txheeb ze kev ua haujlwm raug siab thiab qhov zaus ntawm kev siv tsis yog siab tshwj xeeb, xws li cranes, mine machinery, txoj kev machinery, thiab lwm yam. Feem ntau hais lus, hom potentiometer yuav tsum tau them sai sai rau nws txoj hlua. txoj kev siv. Yog tias siv txoj kev xaim tsis raug, lub potentiometer yuav luv luv ntawm ib txoj haujlwm tshwj xeeb, ua rau muaj qhov tam sim no siab tam sim no thiab qhov tshwm sim ntawm kev hlawv lub potentiometer.
Daim duab 1 Potentiometer nrog nruab nrab txhuas
Daim duab saum toj no yog txoj kev xaim ib txwm muaj ntawm potentiometer (nws yuav tsum tau muab sau tseg tias qee qhov, cov xov hlau yuav txawv raws li cov chaw tsim khoom, thiab No. 2 nruab nrab kawg thiab No. hauv daim duab 2). Qhov chaw tuag ntawm lub potentiometer (Qhov ntau ntawm cov zis voltage tsis hloov) muaj qhov sib txawv ntawm ± 2 ~ 3 degree raws li kev xaiv ntawm potentiometer.
Daim duab 2 Potentiometer tsis muaj hlau lead
Tsis tas li ntawd, yog tias nws yog peb tus pin potentiometer, cov xaim yog raws li qhia saum toj no.
Potentiometers raug cais raws li kev ua kom pom tseeb: 1. Carbon film potentiometer; 2. Organic solid core potentiometer; 3. Hlau zaj duab xis potentiometer; 4. Hlau qhov txhab potentiometer; 5. Contactless potentiometer thiab lwm yam.
1. Feem ntau ntawm cov potentiometers siv nyob rau hauv kev lag luam tes yog carbon film potentiometers los yog hlau zaj duab xis potentiometers. Lawv hloov tus nqi tiv thaiv los ntawm zawv zawg txhuam los yog zawv zawg pas nrig ntawm cov yeeb yaj kiab carbon. Qhov teeb meem thev naus laus zis tseem ceeb yog cov yeeb yaj kiab carbon. Nyob rau hauv zaj duab xis, cov pa roj carbon zaj duab xis ntawm lub cev resistor yog ua los ntawm cov av carbon dub, graphite, quartz thiab lwm yam ntaub ntawv coated rau saum npoo ntawm substrate. Nws yog tus cwj pwm los ntawm kev daws teeb meem siab, zoo hnav tsis kam thiab ua haujlwm ntev. Qhov tsis zoo yog cov suab nrov tam sim no, me ntsis tsis zoo linearity, tsis zoo noo noo tsis kam thiab tsis kam ua haujlwm.
2. Txij li thaum muaj kev lag luam tuav yuav tsum muaj lub neej expectancy, thiab yuav tsum tau ib tug tej yam kev khiav hauj lwm precision thiab raug, kev siv cov carbon zaj duab xis potentiometers los yog hlau zaj duab xis potentiometers yuav coj mus rau hauv tus account ob qhov kev pab cuam lub neej thiab kev khiav hauj lwm raug, cov txheeb ze linearity cuam tshuam thiab tam sim no suab nrov. Hauv kev siv hauv kev lag luam, qhov cuam tshuam me me, thiab lub potentiometer nws tus kheej thiab tus kov nws tus kheej yuav tiv thaiv plua plav thiab dej, yog li qhov tsis zoo ntawm cov dej noo yuav tsis muaj nyob.
3. Potentiometers feem ntau ua tsis tau raws li hauv qab no raws li lawv qhov chaw siv:
4. 1. Lub burn-out potentiometer tshwm sim los ntawm qhov kev ua yuam kev ntawm kev xaim hluav taws xob yog qhov tshwm sim sab nraud raws li qhov hluav taws xob lossis blackening ntawm potentiometer, cua sov thiab hlawv tawm.
5. 2. Cov kev sib cuag tsis zoo los yog cov ntsiab lus tawg uas tshwm sim los ntawm kev puas tsuaj rau cov yeeb yaj kiab carbon tuaj yeem ntsuas los ntawm kev ntes cov waveforms nrog oscilloscope.
6. Cov txhuam hniav yog rerouted los yog deformed, feem ntau manifested raws li ib tug kev hloov nyob rau hauv linear output los yog tsis muaj outputs.
Potentiometer burnout
Yog tias qhov xwm txheej saum toj no tshwm sim, thov hu rau cov chaw tsim khoom los hloov lub potentiometer lossis tuav lub joystick.