Ndi transistors a dera chiyani

Popeza transistor ochititsa kuti ndi tingachipeze powerenga zitatu zimenezi, pali njira zitatu mwina kuphatikizapo mu dera amagetsi ndi polowera wamba ndi kubwereketsa osachiritsika:

• wamba m'munsi (ob) - mkulu voteji kufala koyefishienti;
• wamba emitter (MA) - ndi nakweza chizindikiro monga zilili voteji;
• wamba wokhometsa (OC) - nakweza chizindikiro panopa.

Mwa aliyense wa mitundu itatu ya transistor kusintha madera izo Yankho mosiyana mbendera athandizira chifukwa makhalidwe malo amodzi a zanyengo yogwira zimadalira njira inayake.

Chiwembu wamba m'munsi ndi imodzi mwa masanjidwe atatu lililonse pophatikiza transistors ochititsa kuti. Kawirikawiri ntchito ngati panopa kapena voteji gawo lotetezedwa mkuzamawu. Chotero transistors a dera la yodziwika chakuti emitter pano amachita ngati dera ndi athandizira, ndi linanena bungwe mbendera wachotsedwa wokhometsa ndi tsinde "kukupatsani" ndi waya wamba. A kasinthidwe ofanana ndi FET kusinthitsa madera amplifiers wamba chipata.

Chiwembu kusinthitsa transistors ON khola kutentha ndi pafupipafupi katundu osiyana kuti kupereka kudalira ka magawo (voteji phindu, panopa, athandizira impedance) ndi kutentha kwa zinthu zachilengedwe ntchito. The kuipa monga dera yaing'ono R _MU ndiponso kusapezeka kwa amveke panopa.

Chiwembu wamba emitter amapereka phindu kwambiri ndipo imatulutsa linanena bungwe kukalowa mbendera, kumene kungakhale ngati kusuntha mwachilungamo lalikulu. kufala koyefishienti mu chiwembu izi kwakukulukulu zimadalira kutentha kwa kukondera panopa, umene ndi phindu lenileni ndi penapake sizimadziwika. transistors izi kupereka mkulu kusinthitsa dera _BX R, ndi koyefishienti chifukwa panopa ndi voteji amveke, athandizira chizindikiro inverting, mayiko kulolerana. The kuipa ndi mavuto zokhudzana ndi overdrive - n'zotheka mowiriza zabwino maganizo kupotoza kumachitika chifukwa chizindikiro yaing'ono chifukwa otsika athandizira zazikulu osiyanasiyana.

Chiwembu wamba wokhometsa (yemwenso amadziwika mu zamagetsi ngati emitter wotsatira) ndi imodzi mwa mitundu itatu transistors a dera la. Iwo athandizira chizindikiro amaperekedwa kudzera unyolo m'munsi, ndipo linanena bungwe atachotsedwa ku resistor mu emitter dera la transistor lapansi. ndi kasinthidwe koteroko siteji mkuzamawu amagwiritsidwa ntchito monga gawo lotetezedwa voteji. Apa m'munsi mwa transistor ndi akutumikira monga dera athandizira, amene emitter ndi linanena bungwe, ndipo wokhometsa ndi otsendereka mfundo wamba, choncho dzina chiwembu. Analogs atha kutumikira ngati dera kusinthitsa FETs ndi kubwereketsa wamba. The ntchito njira imeneyi ndi mwachilungamo mkulu athandizira impedance mkuzamawu siteji ndi linanena bungwe wotsika.

atatu lililonse dera kusintha transistors zonse ankagwiritsa ntchito circuitry malinga pa kopita chipangizo zamagetsi ndi chilengedwe cha ntchito zake.