Ib tug semiconductor diode. hauv paus ntawm electronics

Nrog rau tag nrho cov ntau yam ntawm niaj hnub lub caij paus ntawm electronics yuav tsum tsis txhob hnov qab tias nws yog raws li nyob rau hauv yooj yim heev yam, ib tug uas yog ib tug semiconductor diode.

Nws yuav tsum tau muab sau tseg tam sim ntawd hais tias thaum xub thawj siab ib muag nws yog ib tug yooj yim lub caij. Nyob rau hauv qhov tseeb, nws siv tso cai rau kom daws tau ntau yam kev pab raws qib nyob rau hauv lub teb ntawm electronics thiab hluav taws xob engineering. Lub tshuab uas siv los ntawm tej pab kiag li lawm yog tsis tshwj xeeb tshaj yog yooj yim.

Lub diode muaj ob tug sib txawv nyob rau hauv conductivity hom ntaub ntawv hu ua thawj n-conductivity thiab p-conductivity. Yog hais tias peb xav txog cov hauv paus ntsiab lus ntawm cov lag luam ntawm ib tug semiconductor diode, qhov yuav tsum tau mus rau hauv xws li tej yam uas raws li pn hlws ris, electron emission, diffusion, lwm yam lub cev los. Yog li ntawd, tawm hauv qhov kev sib tham ntawm cov lus nug no rau lwm lub ntees, siv ib tug sib piv. Sib piv cov semiconductor diode tej zaum yuav ib tug valve. Vim nws cov qauv, muaj raws ntawm ob tug sib txawv conductivity hom khoom nyob rau hauv xws li ib tug ntaus ntawv muaj unilateral conductivity, uas txhais tau tias ib tug hluav taws xob tam sim no los ntawm nws muaj peev xwm ntws xwb nyob rau hauv ib tug coj. Tib yam tshwm sim thaum uas siv cov valve - cua los yog dej yuav kis tau xwb nyob rau hauv ib tug coj. Piv txwv li - lub tsheb kauj vab lub koob yees duab: rau saum huab cua ntws, thiab rov qab - tsis muaj.

Nws yuav zoo li yooj yim heev nyhuv - ib-txoj kev conductivity, tab sis muab ib tug ntau ntawm cib fim los siv nws nyob rau hauv kev siv tswv yim. Nyob rau hauv kev, ib tug semiconductor diode ua AC rau DC hloov dua siab tshiab. Muaj yog ib tug tag nrho cov chav kawm ntawv ntawm cov khoom hu ua rectifier diodes.

Lawv ua hauj lwm cia li zoo li ib tug valve. Thaum lub polarity ntawm lub voltage thov rau cov khoom sau raws nkaus Ii yuav tsum tau, piv txwv li, thaum ib tug ntxiv voltage yog thov mus rau lub ntaus ntawv ntxiv thiab rho tawm mus rho tawm, ces los ntawm cov hluav taws xob tam sim no, yog hais tias tsis, tsis muaj dab tsi tshwm sim.

Nws yog vim cov nyhuv piav AC voltage yog hloov dua siab tshiab rau hauv ib tug mus tas ib. Lub tswv yim Circuit Court yog txhab khoom mus rau alternating voltage, tab sis lub voltage thoob plaws lub semiconductor kis xwb qhov tseeb polarity. Raws li ib tug tshwm sim, peb tau txais cov qhov tso zis voltage ntawm tsuas yog ib polarity, thaum pulsing, piv txwv li ua nyob rau hauv amplitude.

Qhov no tsis yog tsuas yog ib daim ntawv thov ntawm semiconductor pab kiag li lawm. Thaum lub pn hlws ris, uas yog lub hauv paus ntawm lub diode, muaj lwm yam khoom, ntau yam uas txhais tau hais tias yeej nyob rau hauv nws raug. Cov yam ntxwv yog lub hauv paus rau lwm tus, heev ntau ntaus ntawv cov chav kawm ntawv. Qhov no zener diodes, high-zaus thiab pulsed diodes, varicap, photodiodes, LEDs, etc. Tiam sis tag nrho cov ntawm lawv raug raws li lub zog ntawm cov pn hlws ris.

Txawm li cas los, muaj ib tug hauv chav kawm ntawv ntawm pab kiag li lawm, hu ua "semiconductor Gunn diode", yog tsis txuam nrog lub tsim ntawm xws li ib tug hloov. Lawv ua hauj lwm yog raws li nyob rau hauv lub thiaj li hu ua Gunn nyhuv. Nws yog tshwm sim los ntawm ib tug complex set ntawm phenomena tshwm sim nyob rau hauv lub semiconductor nti nyob rau hauv tej yam sab nraud hloov tau. Raws li ib tug tshwm sim ntawm cov dab tam sim no ntws los ntawm tus siv lead ua hloov nws oscillations tshwm sim. Tab sis rau lawv tiam thiab siv xws kiag li lawm. Lawv feem ntau siv nyob rau hauv microwave technology raws li ib tug qhov chaw ntawm deeg.

Diodes yog ib feem ntawm tej hluav taws xob ntaus ntawv. Lawv yog siv rau cov nkauj nraug thiab voltage hloov dua siab tshiab, stabilization, filtering suab nrov; yooj yim sau cov neeg uas lawv tsis siv. Rau lawv, muaj ntau hom ntawm vaj tse, tsim rau ib tug ntau yam ntawm currents thiab voltages thiab ntsia ob leeg nyob rau tswv yim thiab tso zis circuits nyob rau hauv hluav taws xob pab kiag li lawm. Diode - nws yog tej zaum ib tug ntawm feem ntau semiconductor pab kiag li lawm.

Tam sim no koj paub dab tsi ib tug semiconductor diode, thiab dab tsi yog qhov kev xaiv rau nws siv.