Bipolar transistor - lub hauv paus rau amplifying hluav taws xob Pib ntsais koj teeb

Nyob rau hauv txoj kev loj hlob ntawm ob domestic thiab thoob ntiaj teb hluav taws xob thiab electronics ua si ib tug tseem ceeb luag hauj lwm xws semiconductor pab kiag li lawm xws li bipolar transistor.

Bipolar transistor - ib tug ntaus ntawv, muaj nyob rau hauv nws muaj pes tsawg leeg ntawm ob interconnected pn hlws ris, yog raws li nyob rau hauv semiconductor cov ntaub ntawv. Qhov no hom ntawm transistor muaj peb terminals. Amplifying yam ntxwv, uas muaj ib tug bipolar transistor, piav rau lub hauv paus ntawm kev paub txog enriched thiab depleted platelets nqi semiconductor (tuav txhaj tshuaj thiab extraction cov txheej txheem, feem), raws li zoo raws li cov kev cai ntawm electromagnetism.

Niaj hnub no muaj ob lub ntsiab hom bipolar transistors, uas yog faib raws li lub sijhawm nyob rau hauv uas muaj yog ib qho alternation ntawm cheeb tsam sib txawv ntawm cov conductivity hom ntawm cov semiconductor siv nyob rau hauv tus qauv: hom npn thiab pnp. Qhov zoo ntawm cov ib hom tshaj lwm yam tsis tau txawv vim hais tias qhov txawv ntawm cov transistors tsuas yog dab tsi lub polarity ntawm cov sab nraud hwj chim qhov twg los yog kev cob cog rua rau ib los yog lwm davhlau ya nyob twg ntaus ntawv.

Transistor - bipolar ntaus ntawv muaj peb lub ntsiab hais: ib tug collector, puag thiab emitter. Txhua yam ntawm lub ntsiab yog kev cob cog rua, raws li ib tug txoj cai, ib tug davhlau ya nyob twg.

Bipolar transistors yog feem ntau zais los ntawm hwj chim dissipation, rho los ntawm cov collector. Los ntawm no parameter pab kiag li lawm yog muab faib ua tsawg-hwj chim transistors (txog 0.3 W), medium (0.3 mus rau ib nrab watt) thiab siab (1.5 watts). Lwm txoj ntsiab cai ntawm cov kev faib ntawm transistors - ntawm cov ua hauj lwm ntau zaus. Nyob rau hauv xws li qhov kev sib cais hauv paus ntsiab lus emit tsawg zaus pab kiag li lawm (tsib MHz), medium zaus (5 MHz rau 35 MHz), HF (35 MHz rau 350 MHz) thiab microwave (tshaj 350MHz) transistors.

Txhua bipolar transistor tau txais cim nyob rau hauv raws li muaj feem xyuam rau lub teb chaws qauv. Raws li ib tug txoj cai, lub los yog ua los ntawm rau los sis xya cim (tus xov tooj los yog cov tsiaj ntawv). Cov npav yuav tsum qhia lub hom ntawm cov khoom, cov hom kev ntaus nws tus kheej, thiab lub zaus cov yam ntxwv ntawm lub hwj chim ntaus ntawv. Tsis tas li ntawd, labeling yuav txiav txim seb lub hom thiab serial tooj ntawm cov khoom kev loj hlob. Yog li, txoj kev xaiv cov transistor - ib tug ntaus ntawv passport, uas qhia tag nrho cov tseem ceeb cov yam ntxwv ntawm tus ntaus ntawv.

Muaj plaub yooj yim hom kev lag luam los ntawm cov bipolar transistor:

• ib tug active hom nyob rau hauv uas cov zaj yog qhib thiab kaw nyob rau emitter mus rau lub collector zaj;
• txiav-tawm, nyob rau hauv uas ob qhov kev hloov (thiab cov emitter thiab collector) raug kaw thiab tsis muaj tam sim no yog dhau nyob rau hauv ib tug rau pem hauv ntej kev taw qhia;
• saturation - lub hom opposite cutoff uas hlos rau hauv lub qhov qhib collector thiab emitter;
• inversion (inverted hom) - theem thaum lub collector hlws ris yog qhib thiab lub emitter yog moog nyob rau hauv kev coj rov qab (tsis hau ib tug "ncaj" tam sim no).

Nyob ntawm seb uas ntawm lub electrodes (terminals) ntawm cov transistor yuav ntau mus rau lub cascades ntawm amplification thiab lub tswv yim thiab tso zis tam sim no, muaj peb theem pib hom ntawm pab kiag li lawm muaj nyob rau hauv lub Circuit Court: ib tug bipolar transistor nrog ntau emitter, collector los yog puag. Nyob ntawm seb dab tsi hom switching pab kiag li lawm siv nyob rau hauv ib tug ntev, koj yuav siv tau rau ntau yam zoo ntawm tus transistor.

Nyob rau hauv xaus, peb nco ntsoov tias hnub no lub bipolar transistors yog lug siv nyob rau hauv electronics thiab analog electronics. Cov pab kiag li lawm yog siv nyob rau hauv ib tug ntau yam ntawm amplification theem tsis muaj lawv nws yuav tsis tau los ua ib tug ua hauj lwm amplifier - ib tug ntaus ntawv uas yog tau tso cai los tsim ib txoj kev hloov los ntawm analog rau cov circuitry. Yog li ntawd, lub bipolar transistor yuav suav hais tias ib tug ntawm feem ntau yog siv ntawm semiconductor pab kiag li lawm, txoj kev loj hlob nteg lub lub hauv paus ntawm niaj hnub electronics.