Txheej txheem cej luam ntawm Inductance Q Tus Nqi
Sep 02, 2019
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Txheej txheem cej luam ntawm Inductance Q Tus Nqi
Inductance Q: Kuj tseem paub tias yog qhov zoo tshaj plaws ntawm qhov pib, nws yog qhov ntsuas tseem ceeb rau kev ntsuas cov khoom siv inductance. Hais txog qhov sib piv ntawm qhov pib rov ua kom pom los ntawm tus inductor mus rau nws qhov sib npaug tsis kam thaum ua haujlwm ntawm AC voltage ntawm qee zaus. Qhov siab dua Q tus nqi ntawm qhov inductor, tus me poob thiab qhov ua rau ntau dua. Cov txiaj ntsig zoo ntawm qhov inductor muaj feem xyuam nrog DC tsis kam ntawm cov coil xaim, kev ploj tuag ntawm cov coil bobbin, thiab cov poob los ntawm cov tub ntxhais thiab cov ntaub thaiv npog.
Qhov yuav tsum ua rau qhov zoo tshaj tawm Q txawv nyob ntawm daim ntawv thov. Rau cov xaim hluav taws xob hauv qhov kev sib hloov sib hloov, Q tus nqi yog siab dua, vim tias Q cov nqi ntau dua, qhov poob ntawm lub voj tsawg dua, qhov ua haujlwm ntawm lub voj ntev dua; Q tus nqi tuaj yeem tuaj yeem qis dua rau lub tsho sov gose; Los yog lub siab txhawm chim, koj tsis tuaj yeem ua li ntawd.
Qhov tseeb, qhov nce hauv Q tus nqi feem ntau yog txwv los ntawm cov yam ntxwv xws li DC tsis kam ntawm cov hlau, lub dielectric poob ntawm bobbin, qhov poob los ntawm cov tub ntxhais thiab cov ntaub thaiv npog, thiab cov tawv nqaij cuam tshuam ntawm lub siab. Yog li, Q nqi ntawm lub kauj yuav ua tsis tau siab heev, feem ntau Q nqi yog kaum rau 100, thiab siab tshaj plaws tsuas yog plaub lossis tsib puas.
Inductance Q: Kuj tseem paub tias yog qhov zoo tshaj plaws ntawm qhov pib, nws yog qhov ntsuas tseem ceeb rau kev ntsuas cov khoom siv inductance. Hais txog qhov sib piv ntawm qhov pib rov ua kom pom los ntawm tus inductor mus rau nws qhov sib npaug tsis kam thaum ua haujlwm ntawm AC voltage ntawm qee zaus. Qhov siab dua Q tus nqi ntawm qhov inductor, tus me poob thiab qhov ua rau ntau dua. Cov txiaj ntsig zoo ntawm qhov inductor muaj feem xyuam nrog DC tsis kam ntawm cov coil xaim, kev ploj tuag ntawm cov coil bobbin, thiab cov poob los ntawm cov tub ntxhais thiab cov ntaub thaiv npog.
Qhov yuav tsum ua rau qhov zoo tshaj tawm Q txawv nyob ntawm daim ntawv thov. Rau cov xaim hluav taws xob hauv qhov kev sib hloov sib hloov, Q tus nqi yog siab dua, vim tias Q cov nqi ntau dua, qhov poob ntawm lub voj tsawg dua, qhov ua haujlwm ntawm lub voj ntev dua; Q tus nqi tuaj yeem tuaj yeem qis dua rau lub tsho sov gose; Los yog lub siab txhawm chim, koj tsis tuaj yeem ua li ntawd.
Qhov tseeb, qhov nce hauv Q tus nqi feem ntau yog txwv los ntawm cov yam ntxwv xws li DC tsis kam ntawm cov hlau, lub dielectric poob ntawm bobbin, qhov poob los ntawm cov tub ntxhais thiab cov ntaub thaiv npog, thiab cov tawv nqaij cuam tshuam ntawm lub siab. Yog li, Q nqi ntawm lub kauj yuav ua tsis tau siab heev, feem ntau Q nqi yog kaum rau 100, thiab siab tshaj plaws tsuas yog plaub lossis tsib puas.
Kev ua haujlwm ntawm qhov inductance Q nqi
Tus nqi Q ntau dhau lawm, ua rau tus inductor hlawv tawm, tus txuas hluav taws xob tawg, thiab Circuit Court ua rau oscillate.
Thaum Q loj, nws yuav muaj qhov tshwm sim ntawm VL = VC >> V. Qhov tshwm sim hauv kev siv hluav taws xob feem ntau ua rau rwb thaiv tsev ntawm qhov pib thiab rhuav tshem ntawm dielectric hauv lub capacitor, ua rau poob. Yog li ntawd, resonance yuav tsum zam hauv qhov fais fab tuag. Hauv qee lub xov tooj cua, cov yam ntxwv ntawm lub suab rov qab yog feem ntau siv los ua kom muaj zog ntawm cov teeb liab tsis muaj zog.
Tus nqi Q ntau dhau lawm, ua rau tus inductor hlawv tawm, tus txuas hluav taws xob tawg, thiab Circuit Court ua rau oscillate.
Thaum Q loj, nws yuav muaj qhov tshwm sim ntawm VL = VC >> V. Qhov tshwm sim hauv kev siv hluav taws xob feem ntau ua rau rwb thaiv tsev ntawm qhov pib thiab rhuav tshem ntawm dielectric hauv lub capacitor, ua rau poob. Yog li ntawd, resonance yuav tsum zam hauv qhov fais fab tuag. Hauv qee lub xov tooj cua, cov yam ntxwv ntawm lub suab rov qab yog feem ntau siv los ua kom muaj zog ntawm cov teeb liab tsis muaj zog.
Koom xwm cuam tshuam rau Q tus nqi ntawm qhov inductor
Cov txiaj ntsig zoo ntawm qhov inductor muaj feem xyuam nrog DC tsis kam ntawm cov coil xaim, kev ploj tuag ntawm cov coil bobbin, thiab cov poob los ntawm cov tub ntxhais thiab cov ntaub thaiv npog.
Qee tus neeg tau txhob txwm txiav txim siab Q tus nqi ntawm tus inductor hauv kev txiav txim kom tsis txhob muaj ntau lub suab tawm / nce ntxiv. Txoj hauv kev txo tus nqi Q tuaj yeem ua kom muaj qhov tsis kam ntawm cov winding lossis siv cov tub ntxhais sib nqus nrog qhov siv fais fab loj.
Cov txiaj ntsig zoo ntawm qhov inductor muaj feem xyuam nrog DC tsis kam ntawm cov coil xaim, kev ploj tuag ntawm cov coil bobbin, thiab cov poob los ntawm cov tub ntxhais thiab cov ntaub thaiv npog.
Qee tus neeg tau txhob txwm txiav txim siab Q tus nqi ntawm tus inductor hauv kev txiav txim kom tsis txhob muaj ntau lub suab tawm / nce ntxiv. Txoj hauv kev txo tus nqi Q tuaj yeem ua kom muaj qhov tsis kam ntawm cov winding lossis siv cov tub ntxhais sib nqus nrog qhov siv fais fab loj.
Tus nqi Q yog feem ntau xa mus rau qhov zoo tshaj plaws, uas yog chav tsis dim uas ntsuas qhov kev ua haujlwm ntawm cov khoom siv lossis cov thawv ntim roj ua haujlwm. Cias muab, nws yog qhov piv ntawm qhov zoo tagnrho tiv thaiv rau cov poob tam sim no hauv feem. Cov khoom siv no tuaj yeem yog qhov inductor, lub zog rov qab, lub ntsuas hluav taws xob dielectric resonator, sab nrauv acoustic yoj resonator, rov qab siv lead ua rov qab lossis LC resonator. Qhov loj ntawm Q nqi nyob ntawm daim ntawv thov tiag tiag, tsis txhob qhov loj dua qhov ntau dua. Piv txwv li, yog tias koj tsim cov lim lim dav dav, qhov siab dhau tus nqi Q yuav ua rau lub ntsej muag zoo tshaj plaws yog tias tsis muaj lwm yam ntsuas. Xws li ntawm LC decoupling cov ntawv thov, cov ua haujlwm siab-Q inductors thiab cov capacitors raug rau nws tus kheej zoo li lub xeev, uas tsis yog qhov zoo rau txo qhov kev cuam tshuam suab nrov hauv lub hwj huam hluav taws xob. Hloov siab, peb cia siab tias tus nqi Q ntau dua rau cov oscillator, thiab siab dua tus nqi Q, zoo dua qhov zaus zaus qhov teeb meem tawg thiab cov suab nrov ntawm oscillator. Muaj ntau qhov sib txawv rau Q qhov tseem ceeb rau cov ntawv thov sib txawv.
Qhov zoo tshaj plaws ntawm kev tivthaiv, uas yog, Q nqi raws ntawm cov txheej txheem tsim khoom, tsim cov khoom siv, thiab kev siv ib puag ncig ntawm kev tivthaiv. Piv txwv li, rau tib lub inductor, yog tias lwm cov tsis hloov thiab tsuas yog tuab ntawm cov qhov txhab inductor hlau hloov, qhov inductance Q ntawm cov hlau yog siab dua Q cov hlau. Yog tias cov nyiaj plated rau ntawm cov hlau, qhov pib ntawm cov nyiaj-lub plated hlau yog siab tshaj qhov inductance ntawm cov hlau tsis xeb. Raws li rau dielectric resonator, Q nqi ntau dua nyob ntawm dielectric resonator cov khoom siv thiab kev tsim khoom.
Qhov loj ntawm Q nqi no kuj muaj feem xyuam rau kev ua haujlwm zaus. Qhov pib dav dav yuav nce siab ntxiv thaum qhov ntau zaus nce. Tab sis nws muaj txwv. Thaum lub sijhawm txwv tsis pub dhau qhov siab tshaj, Q ntawm tus inductor poob qis, thiab tus inductor poob nws qhov inductance. Nyob rau tam sim no, lub dielectric resonator, saum npoo acoustic yoj resonator, thiab cov siv lead ua resonator yog ntau conspicuous. Thaum lub sijhawm ua haujlwm nquag hloov pauv ntawm qhov hloov dua tshiab, lawv Q qhov tseem ceeb yuav poob qis thiab lawv yuav tsis ua haujlwm.
Kev ua tau zoo qhia txog qhov sib piv ntawm lub zog khaws cia rau hauv lub voj rau nws lub zog noj ib lub lim tiam.
Vim tias cov khoom lag luam ntawm tib lub suab paj nruag ntau zaus thiab cov khoom siv tau zoo yog qhov resonant zaus ntawm lub voj. Yog li ntawd, nyob rau hauv cov ntaub ntawv ntawm kom ntseeg tau cov resonance point, qhov zoo tshaj plaws thiab qhov dav ntawm lub pass band yog qhov tsis sib xws. Yog li tsis tuaj yeem hais tias qhov siab dua qhov ua tau zoo, ua kom zoo dua qub, tab sis kuj tseem muaj qhov yuav tsum ua kom tau rau hauv kev ua siab xaib.
Qhov loj dua tus nqi Q, qhov nqaim ntawm daim ntawv hla ntawm qhov thev naus laus zis, uas yog, qhov nqaim zaus ntau nyob nrog. Yog tias qhov yuav tsum muaj daim ntawv hla tam sim no, qhov me me dua tus nqi Q, qhov zoo dua.
Hauv kev xaiv cov zaus (xaiv qee qhov zaus), ntu nthwv dej thaiv (thaiv qee qhov zaus), Circuit Court absorbing (attenuating ib qho zaus), thiab cov cuab yeej cuam tshuam (tshem tawm qee zaus), qee qhov zaus f siv lossis muab tshem tawm. Lub sijhawm no, qhov loj dua tus nqi Q, nws zoo dua. Qhov no yog qhov zaus f ntawm qhov resonance ntawm resonant Circuit Court. Thaum lub LC parallel resonant Circuit Court resonates, lub Circuit Court impedance yog qhov loj tshaj plaws, uas yog sib npaug rau hauv kev qhib Circuit Court, kom lub teeb liab lub teeb nrog lub zaus f tsis tuaj yeem dhau, thiab qhov no tiv thaiv. Lub hom phiaj ntawm lub teeb liab. Thaum lub LC series cov hluav taws xob resonant Circuit Court resonates, lub impedance yog tsawg heev, thiab yog luv-circuited. Lub sijhawm no, qhov zaus ntawm f yog yooj yim hla, thiab lwm cov teeb liab lub teeb liab raug thaiv, kom cov kev xaiv zaus yuav ua tiav.
Hais txog kev sib raug zoo ntawm cov hlau nplaum poob thiab qhov ua tau los ntawm Q-tus nqi ntawm qhov sib nqus lev inductance, cov qauv tsim ntawm cov khoom siv sib txuas tau muaj ntau dua thiab ntau dua nruj. Qhov no xav kom peb ua tib zoo txheeb xyuas thiab suav txhua teeb meem. Qhov muab xam ntawm cov hlau nplaum poob yog feem ntau raws li qhov ntim thiab qhov cuam tshuam ntawm cov tub ntxhais. Txoj kev ploj nkhaus yeej tsuas xam tab sis pom nyob hauv kev ua haujlwm tiag tiag. Cov txheej txheem cua ntawm tib tus ntxhais sib txawv, thiab tib txoj kev cua ntawm tib tus tub ntxhais muaj qhov sib txawv ntawm qhov ceev, tab sis coj tau qhov kub sib txawv nce qhov sib txawv.
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