Digital multimeter DT-830B: imanyuwali yomsebenzisi, kanye nokubuyekeza

Multimeter DT-830B - ithuluzi Chinese ezenziwe, esetshenziswa ngabaningi. Labo njalo iphatha electronics, ngeke akwenze ngaphandle kokusebenza. Lesi sihloko sichaza lokho multimeter DT-830B. Imiyalelo enemininingwane idivayisi evumela ukusebenzisa kwayo ngisho Wabasaqalayo.

Ungazitholela onobuhle eziningi kuhluke izinga lomsebenzi, ukunemba nokusebenza.

Idivayisi senzelwe izilinganiso letibalulekile letilandzelako:

• Amanani kagesi lamanje;
• voltage phakathi kwezindawo ezimbili ku-wesifunda kagesi;
• Ukumelana.

Ngaphezu kwalokho, DT-830B multimeter nezinye onobuhle efanayo ongenza imisebenzi eminingi ezengeziwe:

• kuya ring wesifunda lapho impedance ngezansi ohms 50 ne-alamu;
• ukuhlola ubuqotho a diode Semiconductor futhi ukucacisa voltage kwaso phambili;
• hlola Semiconductor Transistor;
• ukukala capacitance futhi inductance;
• lokushisa kukalwa a thermocouple;
• ukucacisa harmonic isignali imvamisa.

Kanjani multimeter?

1. Dayela imibukiso kulinganiswa amagugu ngesimo izinombolo ngepulasitiki noma ingilazi isibonisi.
2. Inkinobho inikeza ushintsho kudivayisi nemisebenzi, kanye inkinobho ububanzi. kusethelwe "Valiwe" esimweni sokungenzi lutho.
3. Izidleke (isixhumi) ukufakwa kule imikhondo izindlu. Into esemqoka kakhulu ngezwi COM futhi polarity negative, kuyinto Umbuso indawo. It ufakwa uphenyo nge black wire. VΩmA Ngokulandelayo, imakwe, it has a polarity omuhle nge-probe abomvu.
4. Ukuhlolwa nezimo wire ezimnyama nge imikhaza.
5. Amajaji ngokuba transistors control.

Multimeter DT-830B: imanyuwali yomsebenzisi nge incazelo eningiliziwe nesilinganiso izindlela

Akuwona wonke umuntu uyazi ukuthi ukukala nemingcele ezidingekayo zedivayisi. Lapho usebenzisa i-imitha DT-830B, imiyalelo yokusebenzisa okufanele zilandelwe ncamashi. Kungenjalo, ama-apharathasi kungase zishe.

1. Kukhuluma yokumelana

Umsebenzi kuyadingeka uma ufuna ukubamba wiring efulethini noma uthole ikhefu inethiwekhi ekhaya. Akuwona wonke umuntu uyazi, kulesi simo, sebenzisa multimeter, futhi wena nje kufanele usethe ukushintshela ku ukumelana nesilinganiso wemboni ku ezifanele nesilinganiso ibanga. Idivayisi ine umsindo izimpawu ezibatshela ukuthi circuit ivaliwe. Nxa isitshengiselo alikho, lokhu kusho ukuthi endaweni ethile Kunegebe noma ephakeme ukumelana ukubaluleka wesifunda 50 ohms.

Ububanzi ukumelana ubuncane (200 ohms) kuyinto sesiwancamulile. Uma oluchazayo test ezimnyama, insimbi has ukukhombisa ukubaluleka esondele ku-zero.

Multimeter DT-830B womshini Chinese ine izici ezilandelayo lapho yokulinganisa kagesi ukumelana:

1. A ukufundwa ukunemba.
2. Lapho yokulinganisa impedances encane evela ukufundwa kufanele ukubaluleka atholakala e-iphenya contact sisuswe. Ukuze wenze lokhu ababekufunde ngaphambili ivaliwe. Ngakolunye amabanga iphutha wemboni sinciphile.

2. Indlela ulinganise DC voltage

I izishintsha kudivayisi ukuze DCV wemboni ihlukaniswe 5 izibopho. Inkinobho isethelwe ububanzi ngamabomu emikhulu yamanani. Lapho yokulinganisa voltage enikeziwe kusukela ibhethri 3 noma ezingu-12 kungenziwa efakwa isimo wemboni "20". akufanele ibekwe kunani elikhulu, njengoba ukwandisa iphutha afundza lubavuthele at iyunithi aphansi. Ukuze izilinganiso anolaka, uma udinga ukunemba ukuba 1 kuphela, imitha kungenziwa ngqo ukufakwa yokuma "500". Ngokufanayo, akazi lapho kulinganiswa voltage ezidlula. Ungabese kancane kancane ushintshele ububanzi aphansi. On the amasignali nesilinganiso ezingeni eliphezulu isixwayiso "HV", okuyinto kwenza umuntu aziqonde kangcono esikhathini ekhoneni eliphezulu esinxeleni. voltages elikhulu zidinga ukuhambisana sokuqapha ukusebenza insimbi, kodwa njengoba voltmeter multimeter DT-830B kuba okunokwethenjelwa esingaphezu ammeter noma ohmmeter.

Ukuhambisana iphenya polarity ngokuzikhethela idivayisi digital. Uma-ke ayifani, ubufakazi ukubaluleka ngeke athinteke, futhi esinxeleni sesibuko ikhanyisa uphawu "-".

3. Indlela ulinganise AC voltage

Ukufakwa ACV wemboni kuyafana kule DCV. voltage High 220-380 B kungabangela ukwehluleka zedivayisi ngenxa yokuxhumana engalungile.

4. Yokukala DC

imisinga Small kagesi kubalwa DCA wemboni. Kulezi ushintshele izikhundla engamukeleki voltage nesilinganiso. Kulokhu, short circuit kwenzeka.

Ukulinganisa Inani lamanje 10 A ukhonza njengelungu esihlalweni lwesithathu, okumele ngayohlala probe abomvu. Izimpawu kungaba zisuswe imizuzwana embalwa nje. Ngokuvamile i ammeter kulinganiswa kagesi. Ukusebenzisa idivayisi kuleli cala, kufanele kuqashelwe futhi lapho kudingeka izilinganiso.

5. Ukulawula diodes

Ohlangothini reverse of the idivayisi diode kumele sibonise infinity (iyunithi kwesokunxele). Ngo voltage phambili yonkana kwalapho kuyinto 400-700 mV.

Kulesi wemboni ungase futhi uhlole ukuseviswa we Transistor. Uma umelwe ezimbili okuphambene kuhlanganisiwe diode, kubalulekile ukuhlola ushintsho ngamunye ngesikhathi ukuphuka. Ukuze wenze lokhu, kuyacaca lapho base. Ukuze uhlobo pnp kufanele kube plus-probe ukuthola isiphetho esinjalo (isizinda) ukuze kwenziwe uphenyo yabonisa infinity engakhi ezinye ezimbili (emitter futhi ngalendoda). Uma Transistor kuyinto uhlobo npn, base kuyinto lokususa uphenyo. Ukuze uthole emitter, kubalulekile ukukala ukumelana sokushintshela salo, esiwulwazi njalo ezingaphezu kuka ngalendoda. Ukuze isici serviceable kufanele ibe uhla 500-1200 ohms.

Prozvoniv nalesi multimeter e phambili bese ukuhlanekezela izinkomba, kungenzeka ukunquma Transistor olungaphelele noma cha.

6. hFE yemboni

Insimbi kungacacisa ukuthi wamanje okhulisa isici H21-Transistor. Kuyinto ngokwanele ukuba unamathele 3 izikhonkwane ezifanele Jack isokhethi. Inani isibonisi livela ngokushesha "H21". Ukuze uthole imiphumela lesifanele kuyadingeka ukuhlukanisa izinhlobo pnp (ohlangothini lwesokudla panel) kanye npn (ohlangothini lwesobunxele).

7. Amathuba ngcono kudivayisi

On multimeter DT-830B Imiyalelo unikeze inombolo ethile imisebenzi. Leyo mikhumbi ihluke nomunye kancane, futhi uma uthanda, iyiphi kungathuthukiswa, ezifana kokwengeza capacitance nesilinganiso, izinga lokushisa kanye nazo zonke ezinye imisebenzi eyengeziwe abalwe ngenhla.

Incazelo multimeter DT-830B ezikhangisweni nokubuyekeza iqiniso ngokuphelele.

Ngesisekelo multimeter kuyinto analog-to-digital Converter (ADC).

Multimeter DT-830B: wesifunda kanye nokulungiswa

Ukuze zamanani aphansi ithuluzi ephathekayo evame ukusetshenziswa kakhulu chip ICL7106.

Ngo nesilinganiso isignali voltage owathunyelwa inkinobho ngokusebenzisa R17 Resistor okokufaka 31 chip. Lapho i voltage kushintshana kukalwa, kwenzeka ngokusebenzisa D1 ukulungiswa kwananoma diode whereupon isignali uchungechunge futhi iya isiphetho chips 32.

Ayephila DC zamanje kudala iconsi voltage yonkana resistors, bese isignali nayo fed circuit Ukuvikelwa okokufaka 32. fuse wenziwe 0.2 Isethi input.

Idivayisi njalo ehluleka ukulahlekelwa oxhumana nabo uma ayibuyi kahle. Okokuqala, hlola futhi ushintshe fuse.

Idivayisi usebenza thembeke e nesilinganiso voltage, ivikelwe kanye ngokumelene overloads ekufakweni. Ukwehluleka ingabuye yenteke ngesikhatsi ukumelana noma nesilinganiso zamanje.

resistors ashisiwe kungaba azimisele zibukeke, futhi diodes futhi transistors bayahlolwa usebenzisa izindlela letinikwe lapha ngenhla. Ihlola phezu lenqubekela phambili kanye nokusebenza ukuthembeka oxhumana.

Lapho silungisa lisebenze lokuqala luhlola kwamandla. Khona-ke ukulungisa chip uyahlolwa. Kufanele kube nokubambisana, uma voltage at ukuphela 30 3 V, futhi phakathi ukuphela amandla chip ezivamile kungekho ukuphuka.

Lapho kwazo inkinobho akufanele ulahlekelwe ubuhlalu, ngaphandle okuyinto kwakungeke kube nenkanuko edlulele okuthembekile.

Lapho ukushintsha ibhethri?

Amandla kagesi kuyahlukahluka amacala ukunyamalala izinombolo isibonisi kanye nokusuka yokukala Imiphumela kusukela amagugu eseduze ezaziwayo. Ibhethri isithombe luvele esibukweni. Ukuze bavale isikhala salo udinga ukususa ikhava yangemuva, asuse endala bese ufake into entsha.

Sebenzisa multimeter DT-830B is ibhethri elula kakhulu ekushintsheni lula futhi ezingavamile kakhulu. Badinga kuphela ukusebenza naye eduze kakhulu. Idivayisi kalula ashise uma usetshenziswa ngokungalungile.

Izibuyekezo zedivayisi

On idivayisi ezifana a multimeter digital DT-830B, impendulo ikakhulukazi omuhle. He is linesizotha, isebenziseka ngezindlela eziningi, futhi ibhethri okuqhubeka iminyaka. Ulungiselela wonke amanani aphansi zedivayisi. Amazwana avela kuphela trifles.

Okokuphenya kufanele zithathelwe indawo ezinye, njengoba zilimele ngempela kalula. Ukumelana nabo eduze standard 0.5 ohms.

isiphetho

Multimeter DT-830B yidivayisi jikelele, kunesidingo sokuba DIY nezobuchwepheshe. It has imisebenzi eminingi ebalulekile futhi awubizi kakhulu. Ukusebenzisa ngempumelelo kudingekile ngempela ukukufunda ngokuningiliziwe lokho multimeter DT-830B. Iziqondiso ezisebenza kumele ngokuqinile waphawula ukugwema noma yimaphi amaphutha angaholela ukwehluleka zedivayisi.