Dab tsi yog qhov txawv ntawm ceev rov qab diode thiab ib txwm diode?

Niaj hnub no, hluav taws xob circuits tau dhau los ua ib feem tseem ceeb ntawm tib neeg lub neej. Ntawm lawv, diodes yog ib qho ntawm cov khoom siv feem ntau siv hauv hluav taws xob circuits. Thiab diodes tau muab faib ua ob hom: ceev rov qab diodes thiab zoo tib yam diodes. Yog li, qhov txawv ntawm ob lub diodes no yog dab tsi?

Qhov sib txawv tseem ceeb ntawm cov diodes rov qab sai thiab cov diodes zoo tib yam nyob hauv lawv cov qauv thiab cov khoom siv. Cia peb saib ua ntej ntawm cov qauv ntawm qhov ceev rov qab diode. Cov qauv ntawm lub diode rov qab sai yog qhov pib zoo ib yam li cov diode tsis tu ncua, suav nrog kev hloov pauv P-hom thiab N-hom semiconductors. Tab sis tsis zoo li cov diodes zoo tib yam, ceev rov qab diodes teeb tsa lub transcendental hlws ris ntawm P-hom thiab N-hom semiconductors, uas yog lub npe hu ua ib tug tshwj xeeb qauv ntawm ceev rov qab diodes.

Thaum qhov hluav taws xob rau pem hauv ntej ntawm qhov ceev rov qab diode ncav cuag ib qho nqi, qhov overjunction yuav nkag mus rau hauv lub xeev conduction, yog li offsetting qhov ntxiv voltage generated los ntawm qeeb rov qab tam sim no ntawm lub diode zoo tib yam, thiab txhim kho cov conduction muaj peev xwm. Yog li ntawd, lub sij hawm rov qab los ntawm kev ceev rov qab diodes yog luv dua li ntawm cov diodes zoo tib yam, thiab lawv muaj zog zog efficiency.

Ntawm qhov tsis sib xws, cov qauv ntawm cov diodes zoo tib yam yog qhov yooj yim, tsuas yog muaj P-hom semiconductors thiab N-hom semiconductors. Nyob rau hauv pem hauv ntej voltage, electrons ntws los ntawm N-hom semiconductors mus rau P-hom semiconductors, thaum nyob rau hauv rov qab voltage, tsuas yog ib tug tsawg tsawg ntawm doped impurity ions txaus siab tawm lawv cov dawb electrons, tsim drift nqi. Cov conductivity yog me me, manifested li to tam sim no. Yog hais tias qhov rov qab bias loj heev, nws yuav ua rau pem hauv ntej voltage tawg thiab hlawv tawm lub diode.

Daim ntawv thov teb ntawm ceev rov qab diodes thiab zoo tib yam diodes kuj txawv. Ordinary diodes yog siv dav hauv cov teb xws li cov khoom siv hluav taws xob zoo tib yam, cov khoom siv hluav taws xob, thiab teeb pom kev zoo. Piv txwv li, muaj ntau yam zoo tib yam diodes ntawm lub computer motherboard. Fast rov qab diodes, vim lawv qhov zoo ntawm lub sij hawm rov qab luv luv, kev ua haujlwm siab, thiab cov lus teb ntau zaus, tuaj yeem siv rau hauv high-frequency circuits, high-precision converters, fais fab converters, thiab lwm yam, thiab ua lub luag haujlwm tseem ceeb heev. hauv cov teb no.

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