Iyo dzvuku bvunzo inotungamira yakadzikwa, mapini mudenderedzwa dzvuku inzvimbo dzese, uye mapango asina kunaka ema capacitor ese inzvimbo.Isa iyo dema bvunzo inotungamira paIC pini kuti ienzaniswe, uye ipapo iyo multimeter icharatidza kukosha kwe diode, uye kutonga kunaka kweIC kunoenderana neiyo diode kukosha.Chii chinokosha chakanaka?Zvinoenderana neruzivo.Pamwe iwe une mamaboard uye ita zviyero zvekuenzanisa.
Nzira yekukurumidza kuona zvikanganiso
1 Tarisa mamiriro echikamu
Wana bhodhi redunhu rakashata, tanga waona kana bhodhi redunhu rine kukuvara kuri pachena, senge electrolytic capacitor kutsva uye kuzvimba, resistor burnout, uye simba mudziyo kupisa.
2 Tarisa pakusongedzwa kwebhodhi redunhu
Semuyenzaniso, ingave yakadhindwa redunhu bhodhi yakaremara kana yakamonyoroka;kana majoini ekutengesa anodonha kana kuti zviri pachena kuti akatengeswa;kana ganda rakafukidzwa nendarira redare redunhu rakamonyoroka, rinopiswa uye raita dema.
3 Observation chikamu plug-in
Zvakadai semaseketi akabatanidzwa, diode, redunhu bhodhi magetsi ekushandura, nezvimwe zvinoiswa nemazvo.
4 Rakareruka bvunzo kuramba \ kugona \ induction
Shandisa multimeter kuti uite bvunzo iri nyore pane zvinofungidzirwa zvikamu senge kuramba, capacitance, uye inductance mukati meyero kuti uedze kana kukosha kwekupokana kunowedzera, capacitor short circuit, open circuit uye capacitance change, inductance short circuit uye open circuit.
5 Simba-pakuedza
Mushure mezvakataurwa pamusoro apa zviri nyore kutarisa uye kuedza, kukanganisa hakugoni kubviswa, uye simba-pakuedza rinogona kuitwa.Chekutanga kuyedza kana simba redunhu redunhu rakajairika.Zvakadai sekunge iyo AC magetsi edhisheni bhodhi haina kujairika, ingave iyo voltage regulator inobuda haina kujairika, ingave iyo switching simba rekupa inobuda uye waveform haina kujairika, nezvimwe.
6 chirongwa chebhurashi
Kune zvinhu zvinorongwa senge single-chip microcomputer, DSP, CPLD, nezvimwewo, unogona kufunga kubhurasha chirongwa zvakare kuti ubvise kutadza kwedunhu kunokonzerwa nekushanda kwechirongwa chisina kujairika.
Maitiro ekugadzirisa mapuranga edunhu?
1 Kucherechedza
Iyi nzira inonzwisisika.Kuburikidza nekunyatsoongorora, tinogona kuona zvakajeka maronda akatsva.Kana dambudziko iri rikaitika, tinofanira kuteerera mitemo panguva yekugadzirisa uye kuongorora kuti tive nechokwadi chokuti hapasisina kukuvadzwa kwakakomba kunoitika kana simba rakashandurwa.Patinoshandisa nzira iyi, tinofanira kungwarira nyaya dzinotevera:
1. Tarisa uone kana bhodhi redunhu rakakuvadzwa nemunhu.
2. Nyatsocherechedza zvikamu zvakabatana zvebhodhi redunhu, uye cherechedza capacitor yega yega uye kuramba kuti uone kana pane kusviba.Sezvo kuramba kusingaonekwe, kunogona kuyerwa chete nechiridzwa.Nhengo dzakaipa dzine hukama dzinofanira kutsiviwa nenguva.
3.Observation of circuit board integrated circuits, yakadai seCPU, AD uye mamwe machipisi ane hukama, inofanira kuchinjwa munguva kana ichicherechedza mamiriro ezvinhu akafanana akadai sekuputika uye kupisa.
Chikonzero chematambudziko ari pamusoro apa chinogona kunge chiri muzvino.Kuwedzeredza ikozvino kunogona kukonzera kupera simba, saka tarisa yakakodzera dhizaini yedunhu kuti uone kuti dambudziko riri papi.
2. Static kuyerwa
Mukugadzirisa bhodhi redunhu, kazhinji zvakaoma kuwana mamwe matambudziko nekutarisa nzira, kunze kwekunge zviri pachena kuti yakatsva kana kuremara.Asi mazhinji ematambudziko achiri kuda kuyerwa nevoltmeter isati yasvika mhedziso.Zvikamu zvebhodhi redunhu uye zvikamu zvinoenderana zvinofanirwa kuyedzwa chimwe nechimwe.Nzira yekugadzirisa inofanira kushandiswa maererano nenzira inotevera.
Tsvaga pfupi pfupi pakati pemagetsi uye pasi uye tarisa chikonzero.
Tarisa kana diode yakajairika.
Tarisa kana paine dunhu diki kana kunyange rakavhurika redunhu mune capacitor.
Tarisa wedunhu bhodhi-ane hukama akabatanidzwa maseketi, uye kuramba uye zvimwe zvine hukama zviratidziro zvemudziyo.
Isu tinogona kushandisa nzira yekutarisa uye static yekuyera nzira kugadzirisa akawanda ematambudziko mukugadziriswa kwebhodhi redunhu.Izvi hazvina mubvunzo, asi isu tinofanirwa kuve nechokwadi chekuti magetsi emagetsi akajairika panguva yekuyera uye hapana kukuvara kwechipiri kunogona kuitika.
3 Online kuyerwa
Nzira yekuyera yepamhepo inowanzoshandiswa nevagadziri.Izvo zvinodikanwa kuvaka general debugging uye kugadzirisa chikuva kuitira kuve nyore kugadzirisa.Paunenge uchiyera neiyi nzira, unofanirwa kutevera matanho ari pasi apa.
Simba pabhodhi redunhu uye tarisa kana zvikamu zvanyanya kupisa.Kana zvakadaro, zvitarise uye wotsiva izvo zvine hukama.
Tarisa gedhi redunhu rinoenderana nebhodhi redunhu, tarisa kana paine dambudziko neiyo logic, uye uone kana chip yakanaka kana yakaipa.
Edza kana iyo yakabuda yedhijitari yedunhu crystal oscillator yakajairika.
Nzira yekuyera yepamhepo inonyanya kushandiswa kuenzanisa mabhodhi maviri akanaka uye akaipa edunhu.Kuburikidza nekuenzanisa, dambudziko rinowanikwa, dambudziko rinogadziriswa, uye kugadziriswa kwebhodhi redunhu kunopedzwa.