Kana iwe uchida kuyedza diode mudunhu, tora yako multimeter uye uiise kune iyo chaiyo modhi. Bata zvinotungamira kune diode terminals. Tarisa kuverenga pamamita yako. Iwe haufanire kubvisa diode kubva pabhodhi. Kushandisa marongero chaiwo kunobatsira kuti uwane mhedzisiro chaiyo. Iyi nzira inonzwa iri nyore, kunyangwe iwe uchangotanga.
Zvishandiso uye Setup
Zvaunoda
Iwe haudi yakawanda yemhando giya yekuyedza diode mudunhu. Hezvino izvo zvaunofanira kubata usati watanga:
A digital multimeter (ichi ndicho chishandiso chikuru chauchashandisa)
Yedza inotungamira kune yako dijitari multimeter
Optional: An oscilloscope kana jenareta basa (izvi zvinobatsira nekuedza kwepamusoro, asi unogona kusvetuka kuti utarise cheki)
Kana iwe uine maturusi aya akagadzirira, wakagadzirirwa nzira yekuyedza yakatsetseka.
Mazano Okuchengetedza
Kudzivirirwa kunouya pakutanga. Usati wabata chero chinhu, ita shuwa kuti simba redunhu rakadzimwa. Iwe haudi chero voltage inomhanya kuburikidza ne diode iwe uchiiedza. Kana iwe ukaona chero hombe capacitor padyo, ibvise. Iyi nhanho inokuchengetedza uye inochengetedza yako yedhijitari multimeter kubva mukukuvadzwa.
Tip: Gara kaviri-tarisa kuti dunhu rine simba pasi usati watanga. Zviri nyore kukanganwa, asi zvinoita musiyano mukuru.
Multimeter Settings
Kumisikidza yako yedhijitari multimeter iri nyore. Iwe unongoda kushandura dial kune iyo nzira chaiyo. Kana iwe uchida kushandisa diode test mode, tevera matanho aya:
Ita shuwa kuti dunhu radzimwa uye diode haina voltage pairi.
Shandura dial pane yako dijitari multimeter kune iyo Diode Test mode. Tarisa mucherechedzo unoratidzika kunge gonyonhatu ine mutsara.
Batanidza bvunzo inotungamira kune diode. Bata mutobvu mumwe kumagumo ega ega.
Rekodha kuverenga. Zvadaro, shandura madhiri uye rekodha kuverenga kwechipiri.
Kana yako yedhijitari multimeter isina diode bvunzo modhi, unogona kushandisa yekupikisa maitiro. Ingo shandura dial kune yekupikisa kuseta (kazhinji inomisikidzwa ne Ω chiratidzo). Iyi nzira inoshanda kucheki nekukurumidza, asi iyo diode test mode inokupa mhedzisiro yakanyatsojeka.
Maitiro ekuyedza Diode
Diode Test Mode
Unoda edza diode mudunhu here? Nzira iri nyore ndeye kushandisa diode test mode pane yako dijitari multimeter. Iyi modhi inokupa iwe kuverenga kwakananga kwekudonha kwevoltage kuyambuka diode. Heano maitiro aunozviita:
Dzima simba kudunhu. Ita shuwa kuti zvese zvakachengeteka.
Seta yako dijitari multimeter kuti diode test mode. Tarisa chiratidzo chegonyo nemutsara.
Isa muto mutsvuku pane anode uye muto wakasviba pane cathode ye diode.
Tarisa kuverenga. Iwe unofanirwa kuona nhamba iri pakati pe0.6 ne0.8 volts yesilicon diode. Kazhinji yenguva, iri pedyo ne0.7 volts.
Dzorera zvinotungamirira. Isa muto wakasviba pane anode uye muto mutsvuku pane cathode. Chiratidziro chinofanira kuratidza "OL" kana kukosha kwakanyanya. Izvi zvinoreva kuti diode inovhara ikozvino munzira iyi.
Tip: Kana iwe ukaona kudonha kwemagetsi kumativi ese maviri, diode inogona kunge isina kunaka. Kana iwe ukawana zero volts, iyo diode inogona kupfupikiswa.
Resistance Mode
Dzimwe nguva, yako yedhijitari multimeter haina diode test mode. Iwe unogona kuramba uchiyedza diode uchishandisa iyo yekupokana modhi. Iyi nzira haina kunyatsojeka, asi inokubatsira kuona matambudziko ari pachena.
Seta yako dhijitari multimeter kune yekupikisa kuseta (Ω chiratidzo).
Bata zvinotungamira kune diode terminals. Edza nzira dzese.
Mune imwe nzira, iwe unofanirwa kuona kushomeka kwakaderera. Mune imwe, iwe unofanirwa kuona kuramba kwakanyanya kana "OL."
Heino tafura inokurumidza kukubatsira kunzwisisa zvaungaone:
Multimeter Kuverenga | Zvazvinoreva |
|---|---|
0.6 - 0.8 V | Yakanaka silicon diode |
0 V | Diode pfupi |
OL kana kukosha kwepamusoro | Vhura diode |
Cherechedza: Resistance mode dzimwe nguva inogona kupa zvisinganzwisisike mhedzisiro kana mamwe mativi edunhu akabatana kune diode. Kana usina chokwadi, edza kushandisa diode test mode kana kubvisa diode kuti uedze.
Kuturikira Migumisiro
Paunoedza diode, iwe unoda mhinduro dzakajeka. Iyo yakanaka silicon diode inoratidza kudonha kwemagetsi pakati pe0.6 ne0.8 volts mune diode test mode. Kana iwe ukaona 0 volts, diode ipfupi. Kana iwe ukaona "OL" kana pasina kuverenga, diode yakazaruka.
Unogona kusangana nezvinovhiringa mhinduro. Dzimwe nguva, zvimwe zvikamu mudunhu zvinokanganisa kuverenga kwako. Somuenzaniso, imwe nyanzvi yakambowana diode yakakundikana mumuchina wekutakura. Imwe coil yakaramba ichipfura nekuti diode haina kuvharira ikozvino. Dambudziko rakanga rakaoma kuona pakutanga. Diodes inogona kukonzera zvisinganzwisisike, kunyanya mumaseketi emotokari. Kana kuverenga kwako kusingaite zvine musoro, edza kuyedza diode kunze kwedunhu.
Callout: Gara uchiyeuka, paunoyedza diode mu-circuit, zvimwe zvikamu zvinogona kuchinja mhinduro dzako. Kana iwe wakanamatira, bvisa diode uye uiedze zvakare.
Kuedza diode hakufanirwe kuve kwakaoma. Shandisa diode test mode kuti uwane mhedzisiro yakanaka. Resistance mode inoshanda kukurumidza kutarisa. Kana iwe ukawana zvisinganzwisisike kuverenga, funga nezve chimwe chingave chakabatana kune diode.
Kuedza Diode nedzimwe Nzira
Oscilloscope nzira
Dzimwe nguva, iwe unoda kuona kupfuura nhamba. An oscilloscope inoita kuti utarise kuti diode inoshanda sei munguva chaiyo. Kuti uite izvi, tumira square wave kuburikidza ne diode. Batanidza oscilloscope kuyambuka diode. Unogona kuwana matambudziko nekutarisa chimiro chemasaisai.
Hezvino zvekutarisa pascreen:
Tarisa kuti masaisai anokwira nekudzika sei.
Ona kana kureba kwemafungu kuchichinja kutenderera kwega kwega.
Cherechedza kana mutsara uchifamba kumusoro kana pasi. Izvozvo zvinonzi DC offset.
Tarisa kune zvisinganzwisisike spikes kana glitches kana wave wachinja.
Kushandisa oscilloscope kune yakanaka uye yakaipa mapoinzi zvichienzaniswa nedhijitari multimeter. Tarisa tafura iyi:
mamiriro | Oscilloscope | Digital Multimeter |
|---|---|---|
Chiyero Rudzi | Inoratidza waveforms uye mamwe ma voltages | Inokupa nhamba dzemagetsi dzakananga |
Input Impedance | Yakakwirira, saka haizokanganise nedunhu rako | Zvakare yakakwirira, yakachengeteka kune mazhinji maseketi |
kunyatsoita | Kwete chaizvo semultimeter | Zvakanyatsojeka |
AC Ripple Monitoring | Ehe, iwe unogona kuona AC ripple | Kwete, hatisi kuona ripple |
Kusarudzwa | Kazhinji yakakura uye isingatakurike | Diki uye nyore kutakura |
Ruggedness | Yakaoma uye yakasimba | Hazvina kuoma |
Bias Voltage yekuedzwa | Haisi yakanaka yekuyedza diode kana transistors | Mamwe mamodheru anogona kusapa voltage yakakwana |
Tip: Kana iwe uchida kuona kuti diode inobata sei zviratidzo zvinokurumidza kana ruzha, shandisa oscilloscope.
Rinoshanda jenareta
A basa jenareta rinotumira zvakasiyana masaini kuburikidza ne diode. Iwe unogona kutora chimiro, kukurumidza, uye simba rechiratidzo. Ichi chishandiso chinokubatsira kuona kuti diode inoshanda sei muhupenyu chaihwo.
Heano maitiro jenareta anokubatsira iwe kuyedza diode:
Inoita zviratidzo zvakaita semasaisai emakona kana sine mafungu. Iwe unogona kuona kuti diode inoita sei.
Iwe unogona kushandura frequency uye amplitude kuyedza iyo diode pamatanho akasiyana.
Inokubatsira kutarisa kana diode yakavharira ikozvino nzira imwe uye inoirega ichiyerera neimwe nzira.
Paunoshandisa jenareta basa, tanga ne low voltage uye ikozvino. Kuti uite bvunzo yekutanga, shandisa diki ikozvino uye kuyera voltage pane diode. Kana iwe uchida cheki yakadzama, wedzera ikozvino (kusvika ku 1 amp ye 1 amp diode) uye ona kana kudonha kwemagetsi kunoramba kwakajairika. Iwe unogona zvakare kushandisa reverse voltage padyo nechiyero che diode kuti uone kana ichidonha ikozvino.
Cherechedza: Jenareta inoshanda inokupa iwe kutonga kwakawanda uye inokubatsira iwe kuwana matambudziko anogona kupotsa mita iri nyore.
Troubleshooting
Zvakaipa Diode Zviito
Kana iwe ukawana diode yakashata, unofanirwa gadzirisa ipapo. Heino nzira iri nyore yekutsiva yakashata diode mudunhu rako:
Edza diode nedhijitari multimeter yako kuti uone kuti haisi kushanda.
Tsvaga diode yakashata pabhodhi. Iwe unogona kushandisa schematic kana kungotarisa zvakanyanya.
Nyatso desolder uye bvisa diode kubva kudunhu.
Sarudza diode nyowani inoenderana neiyo yekare fungidziro.
Solder diode itsva panzvimbo. Ita shuwa kuti unowana iyo polarity chaiyo.
Edza iyo diode nyowani neyako dijitari multimeter kuti uve nechokwadi chekuti zvese zvinoshanda.
Tip: Nguva dzose tarisa polarity usati watengesa. Diodes inoshanda nenzira imwe chete!
Nyaya Dzakajairika
Diode inogona kukundikana nekuda kwezvikonzero zvakawanda. Iwe unogona kuona matambudziko senge thermal overload, magetsi overstress, kana kudzoreredza kusarura kuparara. Dzimwe nguva, kukuvara kwemuviri kana kuchembera kunokonzera dambudziko. Heano zvimwe zviratidzo uye zvikonzero zvaunofanira kutarisa:
Ikozvino kuenda pamusoro peiyo yakayerwa kukosha
Vhura kutadza kwedunhu
Kukundikana kwedunhu pfupi
Pisa mavanga kana kuputika pane diode
Discoloration kana kusviba materminals
Kukurumidza kupisa kana dunhu riripo
Ruzha rusinganzwisisike kana ma ripples mumagetsi ako
Kana iwe ukaona chero cheizvi, tora yako dijitari multimeter uye tanga kuyedza. Kukurumidza kuona kuongorora kunobatsira zvakare. Tarisa zvikamu zvakatsva kana kunhuhwirira kunoshamisa pedyo nedhiodhi.
Nguva Yokubvisa Diode
Dzimwe nguva, kuedza diode mudunhu hakukupe mhinduro dzakajeka. Zvimwe zvikamu zvinogona kukanganisa kuverenga kwako. Apa ndipo paunofanirwa kufunga nezvekubvisa diode:
Iwe unowana kuverenga kunovhiringidza kubva kune yako dijitari multimeter.
Dunhu rine zvinhu zvakawanda zvakabatana.
Iwe unoona zviratidzo zvekukuvara asi haugone kusimbisa ne-in-circuit bvunzo.
Usati wabvisa diode, bvisa simba rose. Bvisa chero hombe capacitor padyo. Kana iwe uchida, iwe unogona kubvisa mugumo mumwe chete we diode pane kuibvisa zvachose. Izvi zvinoita kuti kuedza kuve nyore uye kwakachengeteka.
Cherechedza: Kana iwe uchiri kutadza kuziva dambudziko, edza kushandisa girazi rinokudza kuti utarise madiki madiki kana majoini akaipa ekutengesa. Kuchengeta chinyorwa chebvunzo dzako uye zvigadziriso zvinokubatsira kuona mapatani kana nyaya imwe chete ikamuka zvakare.
Iwe zvino unoziva nzira yekuyedza diode mudunhu. Gara uchishandisa iyo chaiyo multimeter modhi uye kaviri-tarisa mhinduro dzako. Heano mamwe zvikanganiso zvinowanzoitwa nevanotanga:
Kusadudzira zviratidzo
Kusanganisa polarity
Kushandisa mhando isiriyo kana kutarisisa
Gara wakachengeteka nekutevera matanho aya:
Dzima simba rese uye bvisa capacitors.
Tumira zviratidzo zvekunyevera munzvimbo dzine magetsi akakwira.
Wongorora nzvimbo yako yekuyedza nguva zhinji.
Kana iwe ukawana diode ine mhosva, itsive kana kukumbira rubatsiro kubva kune yaunovimba nayo.
FAQ
Unogona kuyedza diode pasina kuibvisa kubva kudunhu?
Ehe, unogona kuyedza akawanda diode pabhodhi chaipo. Ingoshandisa yako multimeter mu diode test mode. Kana iwe ukawana kuverenga kusinganzwisisike, edza kubvisa rimwe gumbo re diode kuti uwane mhedzisiro yakajeka.
Zvinorevei kuti "OL" pane yangu multimeter pakuedza diode?
"OL" inomirira "Open Loop." Multimeter yako inoratidza izvi kana diode ichivharira ikozvino. Izvi zvinoreva kuti diode iri kushanda yakadzokera kumashure. Iwe unoda kuona "OL" mune imwe nzira kune yakanaka diode.
Sei ndichiwana kuverenga kwakasiyana-siyana mu-circuit kana ichienzaniswa nekunze kwedunhu?
Zvimwe zvikamu mudunhu zvinogona kukanganisa bvunzo yako. Unogona kuona nhamba dzisinganzwisisiki nekuda kwenzira dzinoenderana kana zvikamu zvakabatana. Kana iwe uchinzwa usina chokwadi, edzai diode mushure mekuibvisa kubva mubhodhi.
Chii chinoitika kana ndikaisa diode kumashure?
Kana iwe ukaisa diode kumashure, haitenderi ikozvino kuyerera nenzira yaunoda. Dunhu rako rinogona kusashanda, kana kukuvadza zvimwe zvikamu. Nguva dzose tarisa polarity usati watengesa.
Ndinogona kushandisa analog multimeter kuyedza diode?
Iwe unogona kushandisa analog multimeter, asi haina kunyatsojeka pane yedhijitari. Iwe uchaona tsono ichifamba kune yakanaka diode. Kana tsono isingafambi, diode inogona kuvhurika kana kupfupika.
