Digital multimeter DT-830B: manual yomsebenzisi, kunye nohlaziyo

Multimeter DT-830B - isixhobo Chinese-eyenziwe, esiza kusetyenziswa abaninzi. Abo njalo isebenza elektroniki, Asinakuyenza ngaphandle eso sixhobo. Eli nqaku lichaza into multimeter DT-830B. Imiyalelo iinkcukacha isixhobo ivumela ukusetyenziswa kwayo kwabasaqalayo.

Ezikhoyo iindlela ezininzi nezahlukileyo kumgangatho, ukuchaneka kunye nokusebenza.

Le fowuni ilungiselelwe imilinganiselo engundoqo ilandelayo:

• iimpawu zangoku electric;
• ombane phakathi iingongoma ezimbini sombane;
• ukuxhathisa.

Ukongeza, DT-830B multimeter kunye nezinye iimodeli ezifana unako ukwenza imisebenzi ezongezelelweyo ezininzi:

• wokujikeleza ring xa amanzi ngezantsi ohms-50 nge-alam;
• ukuhlola nesidima diode semiconductor kwaye siqinisekise ombane yayo phambili;
• khangela semiconductor transistor;
• ukulinganisa le capacitance kunye inductance;
• lobushushu nomlinganiselo thermocouple;
• ukumisela amaza umqondiso harmonic.

wenza njani le multimeter?

1. Cofa ubonisa kulinganiswa amaxabiso ngokwemo amanani yeplastiki okanye iglasi ukubonisa.
2. Iswitshi inika utshintsho iifowuni, kwakunye Ibanga iswitshi. ke imiselwe ku "Cima" sikarhulumente bengasebenzi.
3. Iindlwane (isinxibelelanisi) ukuba ufakelo kwi umkhondo yezindlu. Eyona nto ephambili kunye COM elithi kunye wokwephuka elibi, yinto eluncedo. It lifakwa amacala kunye wire omnyama. Okulandelayo, ephawulwe VΩmA, ukuba unalo wokwephuka olulungileyo kunye probe ebomvu.
4. Uvavanyo nezimo ucingo ezimnyama kunye zokukorekisha.
5. Isigqeba transistors yolawulo.

Multimeter DT-830B: lomsebenzisi kunye inkcazelo eneenkcukacha ngeendlela yemilinganiselo

Asinguye wonke umntu uyazi ukuba ukulinganisa indlela parameters eyimfuneko device. Xa usebenzisa DT-830B imitha, imiyalelo zokusebenza kufuneka ilandelwe ngokuchanekileyo. Kungenjalo, izixhobo ukuze ecima.

1. Ukulinganiswa ukumelana

Umsebenzi kuyimfuneko xa ufuna ukubamba iintambo eflethini okanye ukufumana ikhefu kwi Inetweki yekhaya. Asinguye wonke umntu uyazi, kulo mzekelo, sebenmzisa i multimeter, kwaye nje kufuneka ukucwangcisa iswitshi kwicandelo ukumelana womlinganiselo kwi kuluhlu olufanelekileyo womlinganiselo. Le fowuni ine isandi ebonisa ukuba le sekethe ivaliwe. Ukuba isignali akakho, oku kuthetha ukuba ethile kukho umsantsa okanye ixabiso ukumelana yesekethe ephakamileyo 50 ohms.

Uluhlu yenkcaso zisezantsi (200 ohms) obufutshane circuited. Ukuba mninzi uvavanyo ebomvu, namnyama isixhobo kufuneka ukubonisa ixabiso kufutshane zero.

Multimeter DT-830B lokuvelisa Chinese ine mpawu zilandelayo xa umlinganiselo electric ukumelana:

1. Ukufunda accuracy eliphezulu.
2. Xa umlinganiselo impedances encinci yokufundwa kufuneka sisuswe ixabiso zingafumaneka kuphando contact. Ukwenza oku ke ngaphambili ivalwe. Kwelinye zibe impazamo kwicandelo lifinyele.

2. Indlela ukulinganisa ombane DC

Le isixhobo kwicandelo DCV wohlulwe bands 5. Iswitshi imiselwe ku kuluhlu ngabom elikhulu kumaxabiso. Xa umlinganiselo ombane zinikwe ibhetri 3 okanye 12 kubekwa ubume kwicandelo "20". kufuneka zibekwe kwi ixabiso elikhulu, ukuze kwandiswe impazamo kwaye kutsha kwiqondo iyunithi ephantsi. Kuba imilinganiselo rough, ukuba ufuna ngokuchana-1 kuphela, imitha zingafakwa ngqo kwi indawo "500". Ngokufanayo, ayisazi xa ubukhulu ombane kulinganiswa. Unako ke ngokuthe ngcembe tshintshela uluhlu ukuya kumaxabiso asezantsi. Kwinqanaba eliphezulu Imiqondiso lomlinganiselo isilumkiso "hv", nto leyo elicacisa kwikona ephezulu ekhohlo. yombane ezinkulu ilandele isilumkiso ekusebenzeni kunye sixhobo, kodwa voltmeter multimeter DT-830B zifanelekile ngaphezu ammeter okanye ohmmeter.

Ukuthotyelwa ixhokonxa wokwephuka ekhethiwe isixhobo i-digital. Ukuba akumelanga kunga, ngobungqina yexabiso ayiyi kuchaphazeleka, nasekhohlo iskrini ikhanyisa umqondiso "-".

3. Indlela ukulinganisa ombane AC

Ufakelo kwicandelo ACV iyafana kwi DCV. ombane aphezulu 220-380 B kunokubangela ukusilela kwefowuni ngenxa uxhulumaniso ezingachanekanga.

4. Ukulinganiswa DC

imisinga Small kwiziphaluka zekhompyutha alinganiswa kwicandelo DCA. Kwezi tshintsha zikhundla yomlinganiselo ombane engamkelekanga. Kulo mzekelo, kwenzeka kwisiphaluka elifutshane.

Ukulinganisa ixabiso yangoku ka 10 A isebenza njenge isihlalo wesithathu, ekufuneka bafudukela kweli uphenyo ebomvu. Iimpawu asuswe kwimizuzwana nje embalwa. i ammeter Ngokuqhelekileyo umlinganiselo wamandla ombane. Ukusebenzisa ifowuni kulo mzekelo, ukhathalelo kufuneka athathwe kwaye xa zifuneka imilinganiselo.

5. Ukulawula ilight

Kwicala reverse isixhobo diode kufuneka sibonise Infinity (i-unit ekhohlo). Xa ombane phambili lonke isiphambuka yi 400-700 MV.

Kweli candelo ungenza kwakhona khangela serviceability le transistor. Ukuba uchazwa malunga ezimbini ziquka diode, kuyimfuneko ukuhlola lenguqu ngalinye le ncazelo. Ukwenza oku, kuye kucace apho kwisiseko. Kuba uhlobo PNP kufuneka plus-probe ukufumana kwisigqibo onjalo (isiseko) kulandela wabonisa Infinity engentle kwezinye ezimbini (emitter kunye nombuthi). Ukuba transistor na uhlobo npn, isiseko nguthabatha probe. Ukuze ufumane emitter, kuyimfuneko ukuba umlinganiselo ukungawi lenguqu yayo, nto leyo esoloko ngaphezu umqokeleli. Kuba element ziyalungiswa kufuneka ibe uluhlu 500-1200 ohms.

Prozvoniv Utshintsho kumandla multimeter e phambili kwaye umva imiyalelo, kunokwenzeka ukuba ukumisela transistor ezineziphene okanye hayi.

6. Sector hFE

I sixhobo kumisela yokukhulisa factor h21-transistor yangoku. Akwanelanga ukuba usifake nezikhonkwane-3 ukuya kwisokethi efanelekileyo jack. Ixabiso ukubonisa kubonakala kwangoko "h21". Ukufumana iziphumo ezichanekileyo kubalulekile ukwahlula iintlobo PNP (panels kwicala lasekunene) kunye npn (kwicala lasekhohlo).

7. amathuba zokuphucula device

Kwi multimeter DT-830B Imiyalelo zinika inani elithile kwemisebenzi. Le modeli kwahluka enye kwenye kancinane, kwaye ukuba oyifunayo, nayiphi na nokuba ingaphuculwa, njengokudibanisa capacitance womlinganiselo, ubushushu kunye nazo zonke ezinye imisebenzi eyongezelelweyo ezidweliswe apha ngentla.

Inkcazelo multimeter DT-830B kulo mhlomlo kunye nohlaziyo yobuxoki ngokupheleleyo.

Sisiseko multimeter yi analog-to-digital converter (ADC).

Multimeter DT-830B: yesekethe kunye nokulungiswa

Kuba isixhobo eziphathwayo zexabiso eliphantsi ezininzi eziqhele ukusetyenziswa chip ICL7106.

Xa inomlinganiselo uphawu ombane owathunyelwa iswitshi ngokusebenzisa R17 resistor input 31 chip. Xa ombane nokuxuba ulinganiswa, oko kwenzeka ngokusebenzisa D1 ukulungisa diode, ebezikuyo uphawu chain nayo iya ku kwisigqibo chips-32.

Kulinganiswa DC ngoku kudala ukuhla ombane ngapha resistors, kwaye ngoko ke uphawu nalo wondla kumphathi wesekethe ukhuseleko igalelo 32. fuse yenziwe 0.2 Isethi igalelo.

Icebo njalo akaphumeleli ukulahleka abafowunelwa ukuba akahlambulukanga ivuliwe. Kuqala kwinto zonke, khangela utshintshe fuse.

Isixhobo isebenza ngokuthembekileyo kwi umlinganiselo ombane, bakhuselwe kwakunye nxamnye nomthwalo kwigalelo. Ukwehluleka ezingenzeka ngethuba ukunganyangeki okanye umlinganiselo ngoku.

resistors kungaba kumiselwa abangaboniyo, kwaye ilight kunye transistors bavavanywa kusetyenziswa iindlela ezinikwe apha ngentla. Iitsheki kwi ekuqhubekekeni nokuthembeka abafowunelwa.

Xa elungisa esi sixhobo kuqala sijonga umbane. Emva koko ukulungisa nj lukhangelwe. Kufuneka ube olusebenzisekayo, ukuba ombane kwi yesiphelo 30 3 V, naphakathi terminal amandla kunye chip eqhelekileyo akukho hlula.

Xa disassembling iswitshi kufuneka singalahlekani amaso, ngaphandle apho bendingayi kuba nenkanuko ethembekileyo ngayo.

Xa ukutshintsha ibhetri?

Power unikezelo kuyahlukahlukana amatyala Ukunyamalala amanani kwidispleyi kwaye ukutenxa neziphumo yomlinganiselo evela amaxabiso eyaziwa uqikelelo. umfanekiso kwebhetri libonakala kwikhusi. Ukuba esikhundleni ufuna ukususa isiciko umva le, susa endala kwaye ufake umba omtsha.

Sebenzisa multimeter DT-830B ukuba ibhetri elula kakhulu ukutshintsha lula yaye kunqabile kakhulu. Kufuneka kuphela ukuba asebenze ngokusondeleyo kakhulu. Lesixhobo kalula xa zisetyenziswa ngokungachanekanga.

Ukuphonononga idivayisi

On kwisixhobo ezifana a multimeter yedijithali DT-830B, ubukhulu becala ingxelo eyakhayo. Yena nabalulamileyo, ubhetyebhetye, kwaye ibhetri ihlala iminyaka. Ulungiselela lonke ixabiso phantsi ifowuni. Izimvo zivela kuphela zochuku.

Ixhokonxa kufuneka itshintshwe, njengoko kakhulu lula. Resistance kubo kufutshane standard kuyinto 0.5 ohms.

isiphelo

Multimeter DT-830B sisixhobo jikelele, kuyimfuneko ukuba DIY kunye nobungcali. It inemisebenzi ezininzi ezibalulekileyo ayibizi. Ukuze ngempumelelo usebenzise kuyimfuneko ukufunda ngokweenkcukacha oko multimeter DT-830B. Le miyalelo isebenza mawulandelwe ngokuthe ngqo ukuthintela naziphi na iziphoso ezengathi kunokukhokelela ukusilela kwefowuni.