Aiki ka'idodinta transistor

Transistor - a na'urar da cewa gudanar a kan semiconductors a cikin lantarki. An tsara don ta yi hira da karawa a cikin na'urar sakonni. Akwai iri biyu na'urorin: a bipolar transistor da unipolar transistor ko wani filin.

Idan transistor iri biyu cajin yan dako aiki lokaci guda - ramukan da kuma electrons, shi ne ake kira bipolar. Idan transistor daya ne kawai irin cajin, shi ne unipolar.

Tunanin irin aikin da talakawa famfo ruwa. Juya aron kusa - ruwa ya kwarara ya karu, sai ya juya da sauran hanyar da - don rage ko dakatar da kwarara. Kusan wannan shi ne manufa na aiki na transistor. Kawai electrons maimakon ruwa rafi sunã gudãna therethrough. Ka'idar aiki na bipolar transistor irin halin da cewa ta hanyar wannan na'urar lantarki akwai nau'i biyu daga ikon suna. Sun kasu kashi high, ko na asali da kuma kananan, ko sarrafa. Cikinsa da ikon halin yanzu rinjayar da damar da babban iko. La'akari da wani filin sakamako transistor. Ka'idar da aiki ne daban-daban daga wasu. Yana wuce daya kawai na yanzu fitarwa wanda ya dogara a kan yanayi electromagnetic filin.

A bipolar transistor aka sanya na 3 yadudduka na semiconductor, kazalika, mafi mahimmanci, biyu PN-mararraba. Wajibi ne a rarrabe tsakanin PNP da NPN a mulki kuma, sabili da haka, kuma transistors. Wadannan semiconductors ake alternating electron da rami madugu.

A bipolar transistor yana da uku tashoshi. Wannan tushe lamba, barin cibiyar Layer, da kuma biyu wayoyin a gefuna - emitter da kuma haraji. Idan aka kwatanta da wadannan biyu matsananci wayoyin tushe Layer ne bakin ciki sosai. Tare da gefuna da transistor yankin na semiconductor ba tsakaitã. wani semiconductor Layer zubar a kan tara gefe zuwa daidai aiki da wannan na'urar ne a bari kadan, amma shi ne thicker kamar yadda idan aka kwatanta da gefen emitter.

transistor aiki ka'idojin da su ne bisa jiki matakai. Bari mu yi aiki tare da model PNP. NPN model zai yi aiki irin wannan, sai dai polarity da irin ƙarfin lantarki tsakanin wannan asali abubuwa a matsayin haraji, da kuma wani emitter. Yana zai zama a gaban shugabanci.

Abu P-type qunshi wani rami ko gaskiya ma cajin ions. N-type abu hada da barnatar da cajin electrons. A mu transistor yawan ramuka a cikin F yankin fi yawa da yawan electrons a N.

Idan ka haɗa wani irin ƙarfin lantarki tushen tsakanin irin wannan sassa matsayin emitter da kuma tara daga cikin transistor aiki ka'idojin da su ne bisa hujjar cewa ramukan suna janyo hankalin zuwa iyakacin duniya da kuma tara a kusa da emitter. Amma yanzu ba ya je. A lantarki filin daga irin ƙarfin lantarki tushen ba ya isa da haraji saboda m semiconductor emitter Layer da tushe semiconductor Layer.
Sa'an nan connect wani irin ƙarfin lantarki tushen tare da wani daban-daban hade da abubuwa, wato da tushe da kuma emitter. Yanzu ramuka da aka aiko da database da kuma fara kara azama tare da electrons. A tsakiyar ɓangare na tushe ne tare da cikakken ramukan. A sakamakon haka ne biyu igiyoyin. Big - daga emitter zuwa tara, kananan - daga tushe ga emitter.

Tare da karuwa a irin ƙarfin lantarki a cikin database a cikin Layer N zai kasance ma fi ramukan, ƙara da tushe na yanzu, da emitter halin yanzu zai kara da dan kadan. Wannan yana nufin cewa wani karamin canji a tushe na yanzu tsanani da isasshen Littafi emitter halin yanzu. A sakamakon haka ne a ci gaba alama a wani bipolar transistor.

La'akari da ka'idojin da transistor dangane da aiki yanayin. Rarrabe al'ada aiki yanayin, kishiya aiki yanayin, jikewa, cutoff yanayin.
A aiki yanayin, da emitter maha? Ar da aka bude da kuma rufe tara maha? Ar. A inversion yanayin, duk abin da ya faru a kan m.