Kutanga Manual redhiyo mudzidzi: sei kuona FET

FETs - semiconductor mano, umo kudzorwa transients, uyewo pamwero mukuru goho pari nokuchinja yemagetsi munda. Kune mhando mbiri mano izvi: ne suwo insulated (zvinozoita rakakamurwa transistors pamwe pakuvara gwara uye induction inoshandiswa) uye kutarisira kuchinja. FETs nokuda kwayo yakasiyana unhu zvinowanzoshandiswa zvemagetsi midziyo: simba rinopiwa, materevhizheni, makombiyuta, etc.

Kana kugadzira michina yakadaro zvirokwazvo redhiyo ose mutsva mudzidzi nomubvunzo wokuti: sei kuona FET? Kazhinji, ongororo vakadaro zvinhu anogona vasangana kana vachigadzira pulsed simba rinopiwa. Munyaya ino isu hunonyatsodonongodza sei kuzviita zvakanaka.

How kutarisa FET ohmmeter

Chokutanga, kutanga kuidzwa ari FET, zvinokosha kubata nawo "pinout", kureva pamwe nzvimbo nembambo. To musi, kune shanduro dzakawanda dzakasiyana vakadaro okunze, ukuwo, nzvimbo electrodes vane zvakasiyana. Kazhinji ungawana semiconductor transistors pamwe vakasaina vokukurukura. Nokuti chiratidzo tsamba kushandiswa Latin G, D, S. Kana siginicha asipo, zvakakodzera kushandisa mabhuku.

Saka, zvemarudzi kunze kupenda vaaizivana, kukurukura sei kuona FET. Chinotevera ndechokuti kutora zvakafanira kuchengeteka zviyero, nekuti munda mano vari chaizvo tisanzwe kunofambira mberi magetsi, uye kudzivisa kutadza yakadaro ichocho, zvakakodzera kuronga pasi. Kuti ubvise vaunganidza kunofambira mberi nokuchengeta, kazhinji zvaipfekwa pamusoro chiningoningo Anti-kunofambira mberi pasi ngaasungirire.

Hatifaniri kukanganwa kuti unofanira kuchengeta FETs pamwe namahwindo mhedziso. Kubvisa kunofambira mberi magetsi, unogona mberi kuti ritsigire muitiro. Izvi zvinoda nyore Ohm mita. At basa chinhu pakati ose mhedziso yacho kurwisa vanofanira kuenda kusaverengeka, asi pane zvimwe anosiyiwa. Zvino tinotarisa sei kuona munda mugumisiro transistor kuti N-mhando.

Tikashandisa zvakanaka vachiongorora mudziyo pasuwo electrode (G), uye akaipa vachiongorora kuonana kunobva (S). Panguva iyi, anotanga kubhadharisa gedhi capacitance uye chinhu anovhura. Kana kuyera kurwisa pakati anokonzera uye zvaimutambisira (D) ohmmeter kuratidza vamwe kuramba ukoshi. Nemarudzi akasiyana-siyana transistors, mutengo uyu akasiyana. Kana pfupi-redunhu transistor zviteshi, ari kurwisa pakati zvaimutambisira uye kunobva achava zvakare vanowanzotevedzera kusaverengeka. Kana asingadi, zvinoreva kuti transistor kutadza.

Kana mukakumbira sei kuona FET P-mhando, mhinduro iri nyore: kudzokorora apa nzira chete anochinja polarity. Hatifaniri kukanganwa kuti ano simba FET pakati kunobva uye zvaimutambisira ane muviri diode ukuwo, "prozvanivatsya" mirayiridzo iri imwe chete.

Check FET multimeter

In pamberi mudziyo "DMM", unogona kutarisa FET. Kuti aite izvi, tinofumura kuti mita kuti "akaramba" rudzi diodes kuzozivisa ane chinhu kusango saturation muoti. Kana N-mhando transistor, ari kubvisa vachiongorora batai zvaimutambisira uye zvakanaka - shutter. Chakaremara transistor mu pakadai kuzarurwa. We uchatamisa ndinoiitawo vachiongorora vasingadyi kubvisa, pamusoro panobva, uye multimeter anoratidza zvimwe nemishonga ukoshi. Zvadaro kure transistor: pasina nokusimudza chinyoreso kubva kupi, kubvisa kubata shutter uye mudzokere zvaimutambisira. Transistor kutigumbura uye nemishonga ruchigona kusaverengeka.

redhiyo amateurs Vakawanda vakabvunza: "sei I kutarisa FET, kwete vypaivaya" Pakarepo kupindura kuti nzira hakuna zana muzana. Kuti aite izvi, shandisa multimeter block HFE, asi kazhinji nzira iyi isipo, uye iwe unogona kupedza nguva yakawanda asakara.