Ubuchwepheshe, Electronics
Yiziphi transistors kwe-circuit
Kusukela Transistor okuguquguqukayo a classic enamaphuzu amathathu, kukhona ezintathu izindlela kuhlanganise it in an wesifunda electronic kunechweba ezivamile futhi ukuphela esidayisa yilezi:
- ovamile isizinda (OB) - high voltage ukudluliswa Coefficient;
- ovamile-emitter (MA) - isignali iyakhula njengoba zamanje kanye voltage;
- ezivamile-ngalendoda (OC) - iyakhula isignali samanje.
Isikimu isizinda abavamile ingenye ukucupha ezintathu ejwayelekile zokuhlanganisa transistors okuguquguqukayo. Ngokuvamile isetshenziswa njengendlela wamanje noma voltage sesikhashana amplifier. transistors okunjalo kwe-circuit zinezikhathi ngalolo lapha emitter izenzo njengenhlangano wesifunda okokufaka, isignali okukhipha ethathwa ngalendoda futhi base "lusekelwe" kagesi ezivamile. A ukumisa ezifanayo FET usuke nelezifunda ezivamile esangweni yokukhulisa umsindo.
ipharamitha | inkulumo |
Koeff.usileniya zamanje | I k / mina e = mina k / mina e = α [α < 1] |
Bx. ukumelana | R = U e / mina e = U kube / Okungukuthi |
Isikimu usuke transistors KU ezahlukene esitebeleni lokushisa futhi imvamisa izakhiwo ezinika kwencika elincane nemingcele (voltage inzuzo, zamanje, impedance okokufaka) yi-lokushisa izimo zokusebenza imvelo. I yokuntula zihlanganisa nesifunda esincane R IN kanye ukungabikho okhulisa zamanje.
Isikimu emitter ezivamile ihlinzeka inzuzo eliphezulu kakhulu futhi ukhiqiza i okukhiphayo nabokhulumile isignali, okungenzeka ukushintshashintsha kahle esikhulu. ukudluliswa Coefficient kule scheme ixhomeke lokushisa wamanje kutsatsa luhlangotsi, kungabi lapho inzuzo langempela Kuthi ezingalindelekile. Lezi transistors ukunikeza okusezingeni eliphezulu usuke wesifunda BX R, Coefficient ngoba okhulisa wamanje kanye voltage, okokufaka isignali inverting, lula ukufakwa. I yokuntula kukhona izinkinga ezihlobene Overdrive - kungenzeka nokuguqulwa omuhle impendulo ukuhlanekezela kwenzeka izimpawu ezincane ngenxa yokufaka ongaphakeme uhla ashukumisayo.
ipharamitha | inkulumo |
Odds. okhulisa zamanje | Ngiphume / mina e = mina k / mina b = mina k / (mina e -I k) = α / ( 1-α) = β [β >> 1] |
Bx. ukumelana | R = U e / mina e = U kube / mina b |
Isikimu ngalendoda ezivamile (owaziwa ngo-electronics njengenhlangano umlandeli emitter) ingenye izinhlobo ezintathu transistors kwe-circuit. It isignali okufakwayo enikeziwe nge base chain, kanye okukhipha esuswa Resistor yesifunda emitter we Transistor. ukuhlelwa kwesiteji amplifier okunjalo ngokuvamile lisetshenziswa njengedivaysi sesikhashana voltage. Lapha phansi Transistor ukhonza njengoba wesifunda okokufaka, ogama emitter kuyinto okukhipha, futhi ngalendoda lihlala iphuzu ezivamile, kungakho igama layo liyi isikimu. Analogs zingakhiqiza wesifunda usuke FETs nge esidayisa ezivamile. Buhle le ndlela kuyinto kahle okufakwayo okusezingeni eliphezulu impedance amplifier esiteji kanye okukhipha iphansana.
ipharamitha | inkulumo |
Odds. okhulisa zamanje | Ngiphume / mina e = mina e / mina b = mina e / (mina nge k -I) = 1 / (1-α) = β [β >> 1] |
Koff. voltage inzuzo | U out / U e = U Re / (U khona + U Re) < 1 |
Bx. ukumelana | R = U e / mina e = U kube / Okungukuthi |
Zonke transistors ezintathu ejwayelekile wesifunda ukushintsha kabanzi busebenze, ngokuya ngendawo okuyiwa kuyo zedivayisi ngogesi kanye imvelo sokusebenza kwawo.
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