Zvigadzirwa, Electronics
Ndezvipi transistors kwemutariri
Sezvo nechirwere transistor chinhu chaiwo-pfungwa nhatu, pane nhatu inobvira nzira kusanganisira nayo wemagetsi redunhu rwakafanana Inlet uye nzira yokubudisa chiteshi:
- chimwe nechimwe (Ob) - yakakwirira voltage hutachiwana coefficient;
- chimwe-emitter (MA) - munhu yakakura Mureza somunhu kuitika uye voltage;
- zvakafanana-nemuteresi (OC) - yakakura chiratidzo ano.
Scheme zvakafanana mujinga imwe matatu zvinowanzoitika configurations pakusanganisirawo nedambudziko transistors. Kazhinji rinoshandiswa senzira kuitika kana voltage buffer gudzazwi. transistors vakadaro redunhu dzinoratidzwa mukuti emitter pano anoita somunhu chiyamuro redunhu, mumwe goho chiratidzo hunobviswa muteresi uye chawo "midzi" rwakafanana waya. A yakafanana configuration vari FET nokuchinja Matunhu zvakafanana pasuwo amplifiers.
parameter | mashoko |
Koeff.usileniya iyezvino | I k / I muna = I k / I E = α [α < 1] |
Bx. musimbwa | R mu = U mu / I muna = U kuva / Ie |
Scheme nokuchinja transistors ON zvakasiyana yakatsiga tembiricha uye kakawanda zvivako kuti anopa chiduku kutsamira pakati parameters (voltage dzokusatendeseka, ano, chiyamuro impedance) kubudikidza tembiricha rwekuita kwezvakatipoteredza ezvinhu. Zvazvakaipira zvinosanganisira dunhu duku R IN uye kusavapo ano amplification.
Scheme zvakafanana emitter inopa refu kwazvo pfuma uye pave ane goho inverted chiratidzo, izvo zvinogona kuva kushanduka nokururamisira guru. kutapukirwa coefficient pazano iri zvikuru pakuti tembiricha iri kutsvetera ano, yokuti pfuma chaiyo iri zvishoma nezvimwewo. transistors izvi zvinopa yakakwirira nokuchinja redunhu BX R, kuti coefficient kuti uno uye voltage amplification, chiyamuro chiratidzo inverting, kurerukirwa usanganidzo. Zvazvakaipira ndiwo matambudziko chokuita overdrive - mukana kwatangwa nyaya dzinovaka kusarurama kunoitika nokuda anonongedzera duku nokuda yakaderera chiyamuro guru siyana.
parameter | mashoko |
Matambudziko. ano amplification | I panze / I muna = I k / I b = I k / (I E -i k) = α / ( 1-α) = β [β >> 1] |
Bx. musimbwa | R mu = U mu / I muna = U kuva / I akundinamata |
Scheme zvakafanana nemuteresi (aizivikanwawo mune zvemagetsi ive emitter muteveri) mumwe mhando nhatu transistors kwemutariri. It mazano chiratidzo kusvitsa nomukombiyuta nechigadziko cheni, uye goho hwabviswa kubva resistor iri emitter wedunhu ari transistor. Kwakadaro configuration pamusoro gudzazwi chikuva aiwanzoshandiswa senzira voltage buffer. Pano mujinga transistor kunoshanda mazano redunhu, ane emitter ndiye goho uye nomuteresi iri makateyiwa zvakajairika pfungwa, saka zita zano. Analogs rinogona redunhu nokuchinja FETs ane nevakawanda nzira yokubudisa. Kunakisa Nzira iyi kumbonyanya yakakwirira chiyamuro impedance gudzazwi rwakazara uye vade goho.
parameter | mashoko |
Matambudziko. ano amplification | I panze / I muna = I E / I b = I E / (I mae -i k) = 1 / (1-α) = β [β >> 1] |
Koff. voltage yakaipa | U kunze / U mu = U Re / (U kuva + U Re) < 1 |
Bx. musimbwa | R mu = U mu / I muna = U kuva / Ie |
All matatu chaiwo vematunhu nokuchinja transistors zvinonzi nevakawanda kushandiswa mune hushande, zvichienderana wemapoka wemagetsi uye zvakatipoteredza kuti chikumbiro chacho.
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