Cov ammeter nrog lawv ob txhais tes. Cov ammeter thiab voltmeter

Amperemeters - yog li uas yog siv los mus txiav txim tam sim no nyob rau hauv lub Circuit Court. Cov kev hloov kho yog ua rau lub hauv paus ntawm lub comparators. lawv txawv nyob rau hauv cov neeg ntawm kev ntsuas. Nws tseem ceeb heev kom nco ntsoov hais tias cov pab kiag li lawm yuav ntsia tau rau hauv ib tug Circuit Court nrog DC thiab AC.

Hom-txawv ntaub thaiv npog, portable thiab ua-nyob rau hauv kev hloov kho. By lub sij hawm muaj mem tes thiab theem-sensitive ntaus ntawv. Nyob rau hauv ib tug nyias muaj nyias ib qeb cim xim qauv. Nyob rau hauv thiaj li yuav ntau siab ua uproarious nyob rau hauv lub pab kiag li lawm, nws yog ib qho tseem ceeb kom paub tias cov ammeter ntaus ntawv.

tsav ammeter

Pa cov ammeter Circuit Court muaj xws li ib tug comparator, ua ke nrog resistors. lub microcontroller yog siv rau voltage hloov dua siab tshiab. Feem ntau cov feem ntau nws yog siv nrog reference diodes. Stabilizers yog ntsia xwb xim kev hloov kho. broadband cov ntxaij lim dej yuav siv los ua rau kom tus neeg ntawm ntsuam. Theem pab kiag li lawm yog nruab nrog transceivers.

Qauv rau koj tus kheej ob txhais tes

Sau cov ammeter nrog lawv ob txhais tes yog ib qhov nyuaj. Feem ntau qhov no yuav tsum tau ib tug zoo comparator. rhiab heev parameter yuav tsum tsis txhob yuav tsawg tshaj li 2.2 microns. Yam tsawg kawg nkaus daws teeb meem nws yuav tsum tau khaws cia nyob rau hauv 1 ma. Lub microcontroller nyob rau hauv lub apparatus yog teem rau lub reference diodes. Zaub system kev cob cog rua rau nws los ntawm ib lub lim. Ntxiv mus, nyob rau hauv thiaj li yuav sau cov ammeter nrog nws tus kheej ob txhais tes rau nruab resistors.

Feem ntau cov feem ntau lawv raug xaiv dial hom. Shunt nyob rau hauv cov ntaub ntawv no yuav tsum tau muab tso rau tom qab lub comparator. Division piv nyob rau hauv lub transceiver unit. Yog hais tias peb tham txog ib tug yooj yim qauv, nws yuav siv dynamic hom. Niaj hnub nimno pab kiag li lawm yog nruab nrog ultra-leej counterparts. Qhov tam sim no qhov twg los yuav ua tau ib tug pa lithium-ion roj teeb hom.

DC ntaus ntawv

Cov DC ammeter yog muab rau lub hauv paus ntawm rhiab heev comparator. Nws tseem ceeb heev kom nco ntsoov hais tias cov stabilizers yog ntsia tau rau hauv lub pab kiag li lawm. Resistors yog haum nkaus xwb dial-up hom. Lub microcontroller nyob rau hauv cov ntaub ntawv no yog teem rau lub reference diodes. Yog hais tias peb tham txog cov tsis, qhov tsawg kawg nkaus kev daws teeb meem ntawm lub pab kiag li lawm yog sib npaug zos rau 1 ma.

Modifications AC

Ammeter (digital) AC yuav ua tau nws tus kheej. Microcontrollers yog siv nyob rau hauv cov qauv nrog rectifiers. Yuav kom nce lub laij ntsuas thov cov ntxaij lim dej xws li broadband. Shunt kuj nyob rau hauv cov ntaub ntawv no yuav tsum tsis txhob yuav tsawg tshaj li 2 ohms. Rhiab heev ntawm lub resistor yuav tsum muaj 3 microns. Stabilizers feem ntau ntsia expansion hom. Nws tseem yog ib qho tseem ceeb kom nco ntsoov tias qhov yuav tsum tau los tsim kom tau ib tug triode. Nws yuav tsum tau soldered ncaj qha mus rau ib tug comparator. Permissible yuam kev ntawm pab kiag li lawm ntawm no hom yog nyob ib ncig ntawm 0.2%.

Mem tes ntsuas seev

Pulse kev hloov kho yus muaj tej txee. Tam sim no cov qauv uas manufactured nyob rau hauv lub hauv paus ntawm peb tug ntaus ntawv. Resistors yog tsuas yog siv orthogonal hom. Feem ntau, cov kev faib tau yog sib npaug zos rau 0.8 nyob rau ntawm lawv. Permissible kev ua yuam kev, nyob rau hauv lem, yog 0.2%. rhiab heev rau humidity ntawm cov ib puag ncig yuav tsum tau ntaus nqi rau shortcomings ntawm pab kiag li lawm. Lawv kuj txwv tsis pub siv rau subzero kub. Self-sib sau ua ke cov kev hloov kho problematic. Transceivers qauv thov tsuas dynamic hom.

Lub apparatus ntawm theem-sensitive kev hloov kho

Theem-sensitive qauv uas muaj nyob rau 10 thiab 12 V. Cov parameter permissible kev ua yuam kev rau cov qauv hovering ib ncig ntawm 0.2%. Lub txee nyob rau hauv lub pab kiag li lawm tsuas yog siv ob-ntsis hom. Microcontrollers yog siv nrog rectifiers. Ya ammeters yog tsis ntshai ntawm hom. Ib txhia kev hloov kho yog amplifiers. Yog hais tias lub deal nrog cov ntaus ntawv los ua ke, yuav tsum tau switched resistors. Ib tug ruaj khov qhov chaw ntawm lub hwj chim yuav ua tau ib tug pa lithium-ion roj teeb. Lub diode nyob rau hauv cov ntaub ntawv no tsis yog yuav tsum tau.

Ua ntej yuav txhim kho tau lub microcontroller yog ib qho tseem ceeb rau solder lub lim. Converter rau lithium-ion yuav tsum tau nce mus nce los hom. Lub rhiab heev index nws yog nyob rau 4.5 microns. Nrog ib tug ntse voltage nco nyob rau hauv lub Circuit Court yuav tsum tau soj ntsuam resistors. lub division ceeb nyob rau hauv cov ntaub ntawv no yog nyob rau hauv lub bandwidth ntawm lub comparator. Yam tsawg kawg nkaus siab pab kiag li lawm ntawm no hom tsis pub tshaj 45 kPa. Direct tam sim no transformation txheej txheem yuav siv sij hawm txog 230 ms. moos twg yog nyob rau qhov zoo ntawm cov tshuaj yuav tom khw.

Scheme xim pab kiag li lawm

Xaiv cov DC ammeter yog ua lub hauv paus ntawm comparators uas muaj bandwidth. Tolerable kev ua yuam kev ua qauv sib npaug 0.3%. Devices ua hauj lwm rau lub hauv paus ntsiab lus ntawm ib kauj ruam ua ke. Txee yog siv tsuas yog ob tug-ntsis hom. Ruaj tam sim no qhov chaw yog teem rau lub comparator.

Resistors hu hom siv. Rau nws tus kheej-los ua ke qauv yuav tsum tau ob tug transceivers. Cov ntxaij lim dej nyob rau hauv cov ntaub ntawv no muaj peev xwm heev los txhim kho lub ntsuas cov neeg. Yam tsawg kawg nkaus siab pab kiag li lawm yog nyob ib ncig ntawm 23 kPa. Tus ntse voltage nco tshwm sim tsis tshua. Shunt kuj yog feem ntau tsawg tshaj li 2 ohms. Tus tam sim no nrhiav kom tau zaus nyob rau hauv lub comparator.

Universal measuring pab kiag li lawm

Universal measuring pab kiag li lawm yog tsim rau cov neeg hauv tsev siv. Comparators yog tsis zoo rhiab heev yog feem ntau ntsia tau rau hauv lub pab kiag li lawm. Yog li, lub pub yuam kev ib ncig ntawm 0.5%. Txee yog siv peb tug hom. Resistors yog siv raws li nyob rau hauv lub capacitors. Transistors pom nyob rau hauv ob lub theem thiab tus mem tes hom.

Qhov siab tshaj plaws kev daws teeb meem ntawm lub twj paj nruag tsis pub tshaj 12 ma. Shunt kuj, raws li ib tug txoj cai, nws yog nyob rau hauv lub cheeb tsam ntawm 3 ohms. Vaum pab kiag li lawm yog 7%. Lub qhov kawg siab nyob rau hauv cov ntaub ntawv no yog nyob rau hauv lub ntsia tiv thaiv system.

Vaj Huam Sib Luag-mounted qauv

Panelboard hloov no yog ua los rau 10 thiab 15 V. Cov comparators nyob rau hauv lub pab kiag li lawm ntsia nrog rectifiers. Nyiaj pub them rau kev ua yuam kev pab kiag li lawm yog tsis tsawg tshaj li 0.4 5. Ntaus Yam tsawg kawg nkaus siab sib npaug txog 10 kPa. Converters yog siv mas AC hom. Rau nws tus kheej los ua ke ntawm lub apparatus yuav tsis ua li cas tsis ob-ntsis counter. Lub resistors nyob rau hauv cov ntaub ntawv no yog muab nrog stabilizers.

embedded kev hloov kho

Embedded cov ammeter yog muab rau lub hauv paus ntawm lub reference comparator. Lub peev xwm ntawm cov qauv muaj haum siab, thiab lub paj tau paj ntawm kev ua yuam kev yog sib npaug zos rau txog 0.2%. Qhov tsawg kawg nkaus daws teeb meem ntawm lub twj paj nruag tsis pub tshaj 2 ma. Stabilizers yog siv raws li expansion thiab mem tes hom. Resistors siab rhiab heev yog teem. Microcontrollers yog feem ntau siv tsis tau rectifiers. Qhov nruab nrab tam sim no hloov siab los ntseeg tsis ntau tshaj 140 ms.

qauv DMK

Cov ammeters thiab voltmeters ntawm no lub tuam txhab yog nyob rau hauv siab thov. Cov kab kev los ntawm lub ruaj muaj ib tug txheej ntawm nyob ruaj ruaj qauv. Yog hais tias peb xav txog qhov voltmeters, lawv muaj peev xwm mas ib tug tshaj plaws siab ntawm 35 psi. Nyob rau hauv cov ntaub ntawv no, ib tug toroidal-hom transistors yog siv.

Microcontrollers feem ntau yog ntsia nrog inverters. Rau kev kuaj apparatus ntawm no hom yog hom phiaj haum. Cov ammeters thiab voltmeters ntawm no lub tuam txhab no yog ua los nrog tiv thaiv Certificate.

Tus ntaus ntawv Toreh

Hais tias ammeter (cov) uas ua los ntawm lub siab tam sim no conductivity. Qhov siab tshaj plaws siab nyob rau hauv lub ntaus ntawv koom tes 80 kPa. Qhov tsawg kawg nkaus permissible kub ntawm lub ammeter sib npaug -10 degrees. Hais tias dej measuring dais yog tsis ntshai. Nws yog pom zoo kom nws nruab ze ib lub hwj chim qhov twg los. division piv sib npaug zos rau xwb 0.8. Maximum siab ammeter (digital) tiv 12 kPa. Tam sim no noj ntawm lub ntaus ntawv yog hais txog 0.6 A. Cov transistor siv theem hom. Rau kev siv, qhov no kev hloov kho yog tsim.

Tus ntaus ntawv Lovat

Hais tias ammeter (digital) yog ua lub hauv paus ntawm ob-ntsis counter. Lub conductivity ntawm qhov tam sim no cov qauv yog sib npaug zos rau xwb 2.2 microns. Txawm li cas los, nws yog ib qho tseem ceeb yuav tau nco ntsoov rau hauv lub siab rhiab heev ntawm lub comparator. Lub system siv ib tug yooj yim hais thiab siv cov ntaus ntawv zoo nyob heev. Resistors nyob rau hauv lub tam sim no 'meter' (cov) txheej dial hom.

Nws tseem yog ib qho tseem ceeb kom nco ntsoov tias lawv yuav tau los mus tiv hnyav loads. Shunt kuj nyob rau hauv cov ntaub ntawv no yog tsis ntau tshaj 3 ohms. Tam sim no hloov siab los ntseeg yog tshwm sim sai sai txaus. Ib tug ntse voltage nco tej zaum yuav txuam nrog xwb ib tug ua txhaum ntawm lub kub tsoom fwv ntawm lub ntaus ntawv. Kev khiav hauj lwm Vaum hais tias ammeter yog sib npaug zos rau raws li ntau li ntau 70%. Nyob rau hauv lem, lub siab tshaj plaws kev daws teeb meem yog 10 ma.

qauv DigiTOP

Qhov no cov voltmeter, ammeter DC tawm rau cov kev siv diodes. Cov tshuaj yuav tom khw muab nyob rau ntawd ob-ntsis hom. Lub conductivity ntawm lub comparator yog nyob ib ncig ntawm 3.5 microns. Lub microcontroller yog siv nrog lub rectifier. tam sim no rhiab heev nws muaj ib tug zoo nkauj siab. Fais fab mov ua raws li ib tug pa roj teeb.

Resistors yog siv nyob rau hauv lub twj paj nruag hu hom. Lub stabilizer nyob rau hauv cov ntaub ntawv no yog tsis muab. Lub transistor muaj tsuas yog ib. Direct tam sim no hloov dua siab tshiab yog zoo nkauj ceev ceev. Rau kev siv, qhov no ntaus ntawv yog zoo suited. Lim yog muab rau kom cov neeg ntawm kev ntsuas.

Yog hais tias peb tham txog qhov tsis muaj ib tug voltmeter, ib tug ammeter, nws yog ib qho tseem ceeb yuav tau nco ntsoov hais tias cov kev khiav hauj lwm voltage yog nyob rau hauv 12 V fais fab kev noj nyob rau hauv cov ntaub ntawv no yog sib npaug zos rau 0.5 A. Qhov tsawg kawg nkaus daws teeb meem ntawm lub ntaus ntawv yog sawv cev los ntawm 1 ma. Shunt kuj yog nyob rau ntawm ib ncig ntawm 2 ohms.

Division tau ntawm voltmeter, ammeter tsuas 0.7. Qhov siab tshaj plaws kev daws teeb meem ntawm cov qauv no yog 15 ma. Direct tam sim no transformation txheej txheem yuav siv sij hawm tsis muaj ntau tshaj li 340 ms. Nyiaj pub them rau kev ua yuam kev ntawm hais tias ntaus ntawv yog nyob rau ntawm cov theem ntawm 0.1%. Qhov tsawg kawg nkaus siab nyob rau hauv lub kaw lus yuav mas 12 kPa.