Kobuchwepheshe, Electronic
Yintoni transistors yaloo mmandla
Ekubeni transistor vuvabyi classic-point ezintathu, kukho iindlela ezintathu ezinokwenziwa ngayo kuquka enqatheni kwisekethe elektroniki kunye ugwebu eqhelekileyo kunye terminal iplagi:
- isisekelo eqhelekileyo (OB) - ombane aphezulu transmission lomlingani;
- a eqhelekileyo-emitter (MA) - isignali ziyanyuswa njenge yangoku kunye ombane;
- eqhelekileyo-umqokeleli (OC) - ziyanyuswa uphawu lwangoku.
Scheme isiseko eqhelekileyo yenye esimo ezintathu boqobo obandakanya transistors kwengqondo. Kudla kokuba sisetyenziswe msindo buffer yangoku okanye ombane. transistors ezinjalo kumphathi wesekethe zisingathwa ukuba emitter apha isebenza isekethe igalelo, uphawu lwe output buyasuswa umqokeleli kunye nesiseko "nisekelwe" ukuya ucingo eqhelekileyo. A uqwalaselo efanayo iziphaluka utshintshe nje FET yokukhulisa esangweni eqhelekileyo.
parameter | nkulumo |
Koeff.usileniya yamanje | I k / I I k e = / I e = α [α < 1] |
Bx. ukumelana | R = U e / mna = U yi / Ie |
transistors Scheme usuke kwiipropati lobushushu namatyeli ezinzileyo ezahlukeneyo zinika uxhomekeke elincinane njenge parameters (inzuzo ombane, ngoku, igalelo ukuvimba) yi iqondo lobushushu iimeko bume yokusebenza. Bobubi ziquka isekethi encinane R IN kunye nokungabikho yokukhulisa yangoku.
Scheme emitter eqhelekileyo inika inzuzo eliphezulu kakhulu kwaye ivelise imveliso zocaphulo umqondiso, nto leyo inokuba nomahluko enkulu kangangoko. transmission lomlingani kule nkqubo ikakhulu ixhomekeke iqondo lobushushu icala ngoku, apho inzuzo ngqo Kuthi engalindelekanga. Ezi transistors zinika utshintshe nje wesekethe omkhulu Bx R, ngumlingani okhulisa yangoku kunye ombane, inverting uphawu igalelo, lula ukubandakanywa. Bobubi iingxaki ezinxulumene ukuya overdrive - amathuba ezizenzekelayo ingxelo entle ubugqwetha kwenzeka ngenxa imiqondiso ezincinane ngenxa igalelo kwasezantsi eliguqukayo.
parameter | nkulumo |
Bunzima. yokukhulisa yangoku | I ngaphandle I e = k / I / I b I k / (I e -imiqondiso k) = = α / ( -α 1) = β [β >> 1] |
Bx. ukumelana | R = U e / mna = U yi / I ukukwa- |
Scheme umqokeleli eqhelekileyo (eyaziwa xa elektroniki njengento njengomlandeli emitter) yenye iintlobo ezintathu transistors kumphathi wesekethe. It isiginali igalelo ngezithuthi eziqeshiweyo chain isiseko, kwaye imveliso liyasuswa resistor kwisekethe emitter le transistor. Loo uqwalaselo lo mshini isigaba ngokubanzi isetyenziswa njenge buffer ombane. Apha isiseko transistor lisebenza wesekethe igalelo, ogama emitter na imveliso, kwaye umqokeleli lihlala kwincopho eqhelekileyo, kungoko eli cebo igama. Analogs sebenza utshintshe nje yesekethe FETs kunye iplagi eqhelekileyo. Abaxhamla kule ndlela ngobulungisa igalelo eliphezulu ukuvimba msindo isigaba kunye imveliso iphantsi kakhulu.
parameter | nkulumo |
Bunzima. yokukhulisa yangoku | I phandle / mna = I e / I b = I e / (I e k -imiqondiso) = 1 / (1-α) = β [β >> 1] |
Koff. inzuzo ombane | U phandle / U e = U Re / (U ukuba + U Re) < 1 |
Bx. ukumelana | R = U e / mna = U yi / Ie |
Zonke circuit ziguquka transistors ezintathu boqobo ezisetyenziswa kakhulu busebenze, ngokuxhomekeke kwindawo ye-isixhobo se-elektroniki kunye nokusingqongileyo isicelo sayo.
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