High voltage resistors yog siv nyob rau hauv cov khoom siv kho mob kom cov hluav taws xob tam sim no nyob rau hauv preset ranges.
Kev siv hluav taws xob siab txhais tau hais tias tsawg dua ntawm cov resistors tuaj yeem siv los ua kom tiav qhov xav tau tam sim no.
Cov resistors no yuav tsum muaj peev xwm tiv taus ntau xyoo ntawm kev siv, yog li lawv tau tsim nrog cov khoom siv tsawg dua thiab cov nqi tsim khoom qis dua yog ua rau lawv tsim.
Feem ntau ntawm cov khoom siv kho mob tsis ua haujlwm ntawm qhov hluav taws xob siab heev (ze li 1-2V).
Txawm li cas los xij, muaj qee qhov kev zam.
Muaj ntau implantable diagnostic devices (IDDs) ua haujlwm ntawm 5-20V, thiab kev khiav hauj lwm zaus feem ntau yog siab dua qhov dav dav thiab.
Qhov no txhais tau hais tias kev xav txog tus nqi tseem ceeb dua thaum tsim lub siab-voltage resistor rau cov khoom siv kho mob.
Hauv qab no peb yuav piav qhia yuav ua li cas koj tuaj yeem tsim kho tus nqi qis rau high-voltage resistors yam tsis muaj kev cuam tshuam txog kev nyab xeeb lossis kev ntseeg siab.
Dab tsi yog Resistor siv rau hauv Cov Khoom Siv Kho Mob?
High voltage resistors yog siv nyob rau hauv cov khoom siv kho mob kom cov hluav taws xob tam sim no nyob rau hauv preset ranges.
Kev siv hluav taws xob siab txhais tau hais tias tsawg dua ntawm cov resistors tuaj yeem siv los ua kom tiav qhov xav tau tam sim no.
Cov resistors no yuav tsum muaj peev xwm tiv taus ntau xyoo ntawm kev siv, yog li lawv tau tsim nrog cov khoom siv tsawg dua thiab cov nqi tsim khoom qis dua yog ua rau lawv tsim.
Feem ntau ntawm cov khoom siv kho mob tsis ua haujlwm ntawm qhov hluav taws xob siab heev (ze li 1-2V).
Txawm li cas los xij, muaj qee qhov kev zam.
Ntau yam khoom siv tshuaj ntsuam xyuas (IDDs) ua haujlwm ntawm 5-20V, thiab kev ua haujlwm zaus feem ntau yog siab dua qhov dav dav thiab.
Qhov no txhais tau hais tias kev txiav txim siab tus nqi tseem ceeb dua thaum tsim lub siab voltage resistor rau cov khoom siv kho mob.
Hauv qab no peb yuav piav qhia yuav ua li cas koj tuaj yeem tsim kho tus nqi qis rau cov khoom siv hluav taws xob siab tsis muaj kev cuam tshuam kev nyab xeeb lossis kev ntseeg siab.
Yuav Ua Li Cas Saib Rau Hauv High Voltage Resistor
Tus nqi qis - High voltages txhais tau hais tias yuav tsum muaj ntau cov resistors kom ua tiav qhov xav tau tam sim no.
Yog tias ib lub cuab yeej muaj kev ua haujlwm siab, tus nqi ntawm cov resistors kuj yuav siab dua.
Yooj yim ntawm fabrication - High voltage resistors feem ntau nyob rau hauv 1mm nyob rau hauv txoj kab uas hla thiab ntev ntev.
Lawv feem ntau kuj tseem yog FR-4 lossis FR-5 cov khoom siv hauv Circuit Court board (PCB), uas yooj yim rau kev ua haujlwm nrog ntau dua li FR-32 kim dua.
Kev tsim kho zoo dua yog qhov tseem ceeb kom ntseeg tau tias cov resistors kav ntev mus rau xyoo lawm.
Qee cov tuam txhab siv cov tin plated lem thaum lwm tus siv tin plated leads.
High-zoo resistors muaj nyiaj plated lem thiab leads.
Back-EMF kam rau ua - Raws li cov resistors tau ntev, cov hlau tsis kam txo.
Lub resistor lub nraub qaum-EMF (electromotive force) kuj tuaj yeem nce ntxiv vim qhov nce tam sim no.
Yog li ntawd, ib tug kam rau ntawm qhov kev daws teeb meem ntawm tus resistor tus nqi yog li ntawd yuav tsum tau account rau cov kev hloov no.
Piv txwv li, ib tug resistor nrog ib tug 5% variation ntawm tus nqi (piv txwv li, 9.9 ohms es tsis txhob ntawm 10.0 ohms) yog txais.
Kev ntseeg siab - High voltage resistors feem ntau ua haujlwm ntawm qhov kub ntawm -15ºC txog 85ºC.
Lub qub yog txias dhau los kom tsis txhob muaj teeb meem xws li warping lub resistors, thaum lub tom kawg yog kub heev kom tsis txhob muaj teeb meem kev ntseeg siab.
Yog li ntawd yuav tsum muaj kev khiav hauj lwm kub ntau dua kom tsis txhob muaj teeb meem kev ntseeg siab.
Kauj Ruam 1: Qhia qhov xav tau
Thawj kauj ruam thaum tsim lub siab voltage resistor yog los txheeb xyuas qhov kev khiav hauj lwm voltage thiab kev khiav hauj lwm zaus ntawm cov khoom.
Piv txwv li, tej zaum koj yuav xav tau ib tug resistor uas ntsuas rau qhov siab tshaj plaws ntawm 5V thiab ua haujlwm ntawm qhov zaus ntawm 1kHz thiab 10kHz.
Tom ntej no, koj yuav tsum nrhiav cov khoom tsim nyog kom tau raws li koj xav tau.
Ib qho kev xaiv nrov yog ceramic tshwj xeeb resistor (CSR).
CSR feem ntau yog siv rau kev siv hluav taws xob siab vim nws cov khoom siv zoo, kev ntseeg siab, thiab tus nqi qis.
Lwm qhov kev xaiv nrov yog cov khoom siv FR-4 PCB vim nws cov nqi ua tau zoo thiab yooj yim ntawm kev tsim.
Tus neeg sib tw ze rau CSR thiab PCB yog cov khoom siv FR-5.
Zoo li PCB, cov khoom siv FR-5 kuj pheej yig.
Txawm li cas los xij, CSR thiab PCB muaj cov txiaj ntsig ntawm kev muaj peev xwm tiv taus cov hluav taws xob siab thiab kub kub, raws li.
Cov khoom siv FR-5, ntawm qhov tod tes, tsis muaj PCB qhov kev tiv thaiv rau high voltages thiab yog li tsis muaj kev ntseeg siab hauv qee daim ntawv thov.
Kauj Ruam 2: Xaiv cov khoom zoo
Thaum xaiv cov khoom tsim nyog rau koj lub siab voltage resistor, koj yuav tsum nco ntsoov cov kev khiav hauj lwm voltage thiab cov khoom ua hauj lwm kub.
Piv txwv li, cov khoom siv PCB feem ntau yog siv thaum kub hauv qab -20ºC.
CSR thiab PCB muaj qhov zoo ntawm kev muaj peev xwm tiv taus qhov kub thiab txias, feem.
Ib yam tshiab ntawm cov khoom yog FR-5 polymer nrog ib tug hlau core.
Cov polymer yog pheej yig dua li cov khoom siv PCB thiab FR-5 PCB thiab feem ntau yog siv rau qhov kub thiab txias.
Txawm li cas los xij, nws tsis zoo li PCB lossis FR-4 thiab tuaj yeem ua kom puas los ntawm kev ya raws.
Thaum xaiv cov khoom tsim nyog rau koj lub siab voltage resistor, koj yuav tsum nco ntsoov cov kev khiav hauj lwm voltage thiab cov khoom ua hauj lwm kub.
Kauj Ruam 3: xam Capacitance thiab ESR
Resistors muaj qee qhov capacitance, uas cuam tshuam rau lawv cov zaus thiab impedance.
Tus nqi ESR (Equivalent Series Resistance) yog qhov sib npaug ntawm qhov muaj peev xwm thiab tseem ceeb heev, vim nws suav rau DC tivthaiv ntawm impedance.
Capacitance yog ntsuas hauv picofarads (pF) lossis millifarads (mF).
Feem ntau, 1% kam rau ntawm lub capacitor yog ntau tshaj li txaus rau ib tug high voltage resistor.
ESR yog qhov sib npaug ntawm qhov tsis kam ntawm lub peev xwm thiab tseem ceeb heev, vim nws suav rau DC tivthaiv ntawm impedance.
Kauj Ruam 4: Ntxiv cov khoom los tsim ib daim ntawv qhia txog lub rooj tsavxwm
Thaum koj tau txheeb xyuas cov khoom, suav lawv qhov tseem ceeb, thiab xaiv cov khoom siv rau koj lub siab voltage resistor, nws yog lub sijhawm los muab lawv ua ke rau ntawm lub rooj tsavxwm schematic.
schematic board template yog ib qho qauv txheej txheem ntawm solderless breadboards uas yog siv los tsim electronics circuits.
Lub layout yuav tsum muaj ib kem ntawm cov khoom nyob rau sab laug thiab ib kem ntawm lub hwj chim rails nyob rau sab xis.
Muaj ob peb yam uas yuav tsum nco ntsoov thaum tsim lub schematic board template.
Ua ntej, koj yuav tsum xyuas kom meej tias cov khoom tau muab tso rau kom zoo thiab nyob rau hauv qhov pom zoo hneev taw ntawm lub hwj chim rails.
Qhov thib ob, koj yuav tsum xyuas kom meej tias cov khoom siv hluav taws xob qis dua.
Thaum kawg, koj yuav tsum xyuas kom meej tias lub Circuit Court tiv thaiv los ntawm cov high voltages uas tej zaum yuav muaj.