Lub cev diode (uas feem ntau tsuas yog hu ua lub diode tsis tu ncua, raws li lub sijhawm“lub cev diode”tsis yog feem ntau siv rau hauv cov ntsiab lus tsis tu ncua thiab tuaj yeem xa mus rau tus yam ntxwv lossis cov qauv ntawm lub diode nws tus kheej; Txawm li cas los xij, rau lub hom phiaj no, peb xav tias nws yog hais txog tus qauv diode) thiab MOSFET (Metal Oxide Semiconductor Field Effect Transistor) sib txawv ntau yam. Hauv qab no yog cov ncauj lus kom ntxaws txog lawv qhov sib txawv:
1. Cov ntsiab lus tseem ceeb thiab cov qauv
- Diode: Ib lub diode yog cov khoom siv semiconductor nrog ob lub electrodes, ua los ntawm P-hom thiab N-hom semiconductors, tsim ib qho kev sib tshuam PN. Nws tsuas yog tso cai rau tam sim no ntws los ntawm qhov zoo mus rau qhov tsis zoo (rau pem hauv ntej kev tsis ncaj ncees) thaum thaiv kev thim rov qab (rov qab tsis zoo).
- MOSFET: Ib qho MOSFET yog peb lub davhlau ya nyob twg semiconductor uas siv cov hluav taws xob hluav taws xob los tswj qhov tam sim no. Nws muaj lub rooj vag (G), qhov chaw (S), thiab ntws (D). Qhov tam sim no nruab nrab ntawm qhov chaw thiab qhov ntws tawm yog tswj los ntawm lub rooj vag voltage.
2. Txoj Cai Ua Haujlwm
- Diode: Lub hauv paus ntsiab lus ua haujlwm ntawm diode yog ua raws li kev coj ua ntawm PN kev sib tshuam. Nyob rau hauv pem hauv ntej kev tsis ncaj ncees, cov nqa khoom (qhov thiab cov hluav taws xob) diffuse hla PN kev sib tshuam los ua ib qho tam sim no; Nyob rau hauv qhov rov qab tsis ncaj ncees lawm, ib tug muaj peev xwm barrier yog tsim, tiv thaiv tam sim no ntws.
- MOSFET: Lub hauv paus ntsiab lus ua haujlwm ntawm MOSFET yog ua raws li cov hluav taws xob hluav taws xob. Thaum lub rooj vag voltage hloov, nws tsim ib tug conductive channel (N-channel los yog P-channel) nyob rau saum npoo ntawm lub semiconductor nyob rau hauv lub rooj vag, tswj cov tam sim no ntawm qhov chaw thiab ntws. MOSFETs yog cov khoom siv hluav taws xob tswj hluav taws xob, nrog cov zis tam sim no nyob ntawm qhov hluav taws xob input.
3. Cov yam ntxwv ua tau zoo
- Diode:
- Haum rau kev siv high-frequency thiab tsis muaj zog.
- Muaj unidirectional conductivity, ua rau nws yog ib qho tseem ceeb nyob rau hauv rectification, nrhiav kom tau, thiab voltage tswj circuits.
- Rov qab tawg qhov hluav taws xob yog qhov tseem ceeb tshaj plaws thiab yuav tsum tau txiav txim siab hauv kev tsim kom tsis txhob muaj teeb meem thim rov qab.
- MOSFET:
- Nws muaj cov input impedance siab, tsis tshua muaj suab nrov, tsawg zog noj, thiab zoo thermal stability.
- Haum rau kev sib xyaw ua ke loj loj thiab hluav taws xob hluav taws xob.
- MOSFETs tau muab faib ua hom N-channel thiab P-channel, txhua yam los ntawm kev txhim kho-hom thiab depletion-hom ntau yam.
- Qhia tawm cov yam ntxwv zoo tsis tu ncua tam sim no, nrog rau tam sim no tseem tshuav ze li qhov tsis tu ncua hauv cheeb tsam saturation.
4. Daim ntawv thov teb
- Diode: Siv dav hauv cov khoom siv hluav taws xob, kev sib txuas lus, thiab cov khoom siv hluav taws xob, xws li hauv circuits rectification, voltage regulation circuits, thiab detection circuits.
- MOSFET: Ua lub luag haujlwm tseem ceeb hauv kev sib xyaw ua ke, hluav taws xob hluav taws xob, khoos phis tawj, thiab kev sib txuas lus, siv los ua cov khoom hloov pauv, cov ntsiab lus nthuav dav, thiab cov khoom tsav tsheb.
5. Cov lus xaus
Diodes thiab MOSFETs sib txawv hauv lawv cov ntsiab lus txhais, cov qauv, cov qauv kev ua haujlwm, cov yam ntxwv ua haujlwm, thiab daim ntawv thov. Diodes ua lub luag haujlwm tseem ceeb hauv kev txhim kho thiab kev tswj xyuas hluav taws xob vim lawv qhov kev coj ua tsis ncaj ncees, thaum MOSFETs tau siv dav hauv kev sib xyaw ua ke thiab cov hluav taws xob hluav taws xob vim lawv cov tswv yim impedance siab, tsis tshua muaj suab nrov, thiab siv hluav taws xob tsawg. Ob qho tib si yog qhov tseem ceeb rau kev siv tshuab hluav taws xob niaj hnub, txhua qhov muab nws tus kheej zoo.
Post lub sij hawm: Sep-18-2024
