Mashandisiro aungaita multimeter kune madummies

Mota dzazvino uno hadziite pasina zvemagetsi; uyezve, ivo vanongo zadzwa nemagetsi masekiti nemidziyo. Kuti ukurumidze kuongorora malfunctions mumatunhu emagetsi emota, iwe unenge uchizoda chishandiso senge multimeter.

Muchikamu chino, tichaona shanduko dzakajairika uye ongorora zvakadzama mashandisiro emultimeter emadhoma, i.e. kune avo vasina kumbobata mudziyo uyu mumaoko avo, asi vangangoda kudzidza.

Vhidhiyo maitiro ekushandisa multimeter

Multimeter. Mashandisiro emultimeter. Tester. Zadzisa mirayiridzo yekuti ungashandisa sei muedzo.

Main connectors uye multimeter mabasa

Kuti tinzwisise zvirinani zviri panjodzi, isu tinopa inoonekwa pikicha yeiyo multimeter uye ongorora ma modhi neinobatanidza.

Ngatitangei nemabatanidza iko kwekubatanidza waya. Tambo nhema yakasunganidzwa kune chinobatanidza chinonzi COM (COMMON, zvinoreva kuti zvakajairika mushanduro). Iyo tambo tema inogara yakabatana chete kune ichi chinobatanidza, kusiyana neiyo tsvuku, iyo mune dzakawanda kesi ine maviri mabatanidzi ekubatanidza:

• VRmA connector - inoshandiswa kuyera voltage, kuramba uye mafungu pamusoro pe10 A (Amps);
• connector 10A - inoshandiswa kuyera mafungu kusvika ku10 A.

Mabasa uye maseru eiyo multimeter

Kutenderedza yepakati pointer iwe unogona kuona iyo mitsara yakaparadzaniswa nechena mitsara, ngatiputsei imwe neimwe yadzo:

• DCV - (DC - yakananga ikozvino, V - voltage) uchishandisa rudzi urwu, DC voltage inoyerwa. Volts uye millivolts zvinoratidzwa pachiyero;
• ACV - (AC - alternating current, V - voltage) AC voltage inoyerwa zvichienderana;
• DCA - (DC - yakananga ikozvino, A - Amps) chiyero cheyakananga ikozvino (kubva ku200 microamps kusvika ku200 milliamps inoratidzwa pachigadzirwa);
• 10A - chiyero chekuyera chakasiyana cheiyo yakakura yakananga ikozvino, nekuda kweizvi zvinodikanwa kugadzirisa zvakare waya tsvuku kune chepamusoro chinongedzo;
•  hFE - transistor test mode;
• Omega - kuramba kuyerwa chiyero.

Bhatiri DC kuyerwa kwemagetsi

Ngatipei muenzaniso wekuenzanisira mashandisiro emultimeter, kureva, kuyera DC voltage yebhatiri rakajairwa.

Sezvo isu pakutanga tinoziva kuti iyo DC voltage mune bhatiri ndeye 1,5 V, isu tinogona kubva tamisa seti switch kune 20 V.

Zvinokosha! Kana iwe usingazive iyo DC voltage mune yakayerwa chombo kana chishandiso, saka iwe unofanirwa kugara uchiisa switch kune yakanyanya kukosha yeanoda renji uye udzikise sezviri madikanwa kudzikisira kukanganisa.

Isu takabatidza modhi yaidiwa, enda zvakananga kuchiyero, shandisa iyo dzvuku probe kune iyo yakanaka yebhatiri, uye dema probe kune yakashata divi - isu tinotarisa mhedzisiro pachiratidziro (inofanirwa kuratidza mhedzisiro ye1,4- 1,6 V, zvichienderana nemamiriro ebhatiri).

Zvimiro zvekuyera AC voltage

Ngatinyatso tarisei pane izvo zvaunoda kuti utarise kana iwe ukayera AC voltage.

Usati waita basa, iva nechokwadi chekutarisa kuti ndedzipi dzinobatanidza waya dzakapindirwa mukati, nekuti kana, kana uchiyera AC, waya tsvuku inopindirwa muchidimbu chekuyera ikozvino (10 A connector), dunhu pfupi richaitika, risingadiwe zvakanyanya.

Zvakare, kana iwe usingazive iyo AC voltage renji, ipapo shandura switch yacho kune yakanyanya chinzvimbo.

Semuenzaniso, munzvimbo yepamba, tinoziva kuti iwo magetsi mune zvigadziko nemidziyo yemagetsi ingangoita 220 V, zvichiteerana, chishandiso chinogona kumisikidzwa zvakachengeteka kusvika ku500 V kubva ku ACV renji.

Maitiro ekuyera iyezvino yema leakage mumota ine multimeter

Ngatitarisei kuti tingayera sei yazvino yekudonha mumotokari uchishandisa multimeter. Dzinga zvese zvemagetsi zvisati zvaitika uye bvisa kiyi kubva pane switch yemoto. Tevere, iwe unofanirwa kukanda kubvisa yakashata terminal kubva kubhatiri (siya iyo yakanaka terminal isina kuchinjika). Isu tinoisa iyo multimeter munzira yekuyera yakananga zvazvino ye10 A. Usakanganwa kuisazve tambo tsvuku mune inoenderana yekubatanidza (iyo yekumusoro, inoenderana ne10 A). Isu tinobatanidza imwe probe kune iyo terminal pane yakatemwa waya, uye yechipiri yakananga kune zvakashata zvebhatiri.

Mushure mekumirira zvishoma kuti tsika dzimire kusvetuka, iwe uchaona inodikanwa yekudonha yazvino mumotokari yako.

Ndeupi mutengo unobvumidzwa wekudonha

• Iko kushoma kunogamuchirwa kukosha ndeye 15 mA;
• Iyo yakanyanya kukosha yeiyo leakage yazvino mumotokari ndeye 70 mA.

Kana kukosha kwako kukuru kwapfuurwa, saka unofanirwa kuenda kunotsvaga kuburitsa. Chero zvigadzirwa zvemagetsi mumotokari zvinogona kugadzira kubuda.

Nheyo yekutanga yekutsvaga ndeyekuvhomora mafuse uye kutarisa kukosha kwekudonha. Kana iwe wakabvisa fuse uye kukosha kwekudonha pamudziyo hakuna kuchinja, saka zvinhu zvose zvakanaka nemudziyo unobata fuse iyi. Uye kana, mushure mekubviswa, kukosha kwakatanga kusvetuka, saka chimwe chinhu chakashata nechigadzirwa chinoenderana.

Mibvunzo nemhinduro:

Nzira yekuyera sei voltage ne multimeter? Iyo voltage yekuyera modhi inotarwa, ichiisa iyo yakanyanya kuyerwa muganho (mumotokari chiratidzo ichi 20V), uye zvakare inofanirwa kusarudza iyo DC kuyerwa maitiro.

Ko Kuenderera kunoshanda sei paMultimeter? Iyo multimeter ine yega simba sosi (iyo skrini inofambiswa nebhatiri). Pachikamu chakaedzwa che wiring, ikozvino yehuwandu hushoma hunogadzirwa uye kuputsika kunonyorwa (kana kushamwaridzana pakati peprobes kwakavharwa kana kwete).