Vim li cas thiaj siv balun rau dipole?

Cov txheej txheem:

Vim li cas thiaj siv balun rau dipole?
Vim li cas thiaj siv balun rau dipole?
Anonim

Ib tug dipole yog dab tsi hu ua tus kav hlau txais xov sib npaug. Nyob rau hauv lub ntiaj teb zoo tagnrho ib tug balun yuav tsum tau siv nrog coaxial feeder (uas yog unbalanced) ua rau cov kev hloov ntawm kev sib npaug thiab unbalance systems. Kev siv lub balun yuav tiv thaiv lub coax radiating txhua lub zog los yog khaws cov suab nrov.

Kuv puas xav tau ib lub balun ntawm kuv dipole?

Paul, a dipole tsis muaj kom muaj ib tug balun. Muaj ib qho tuaj yeem pab tiv thaiv RF los ntawm txoj kab nqes mus rau hauv lub shack thiab tuaj yeem txhim kho cov yam ntxwv ntawm lub dipole, tab sis kuv tau khiav dipoles txuas ncaj qha rau coax yam tsis muaj teeb meem. Muab ib qho tsis muaj balun thiab saib seb nws ua haujlwm li cas rau koj.

Lub hom phiaj ntawm lub balun yog dab tsi?

Lub tshuab hloov pauv no yog lub npe hu ua balun, thiab lawv tau ua haujlwm hauv txhua yam ntawm cov xov tooj mus rau cov khoom xa tawm. Baluns yog siv ob qho tib si txhawm rau txheeb xyuas qhov ntws ntawm AC cov cim thiab ua qhov tsim nyog impedance hloov pauv ntawm coaxial cable, uas muaj qhov qis impedance, thiab cov khoom sib npaug, uas muaj impedances siab dua.

Thaum twg kuv yuav tsum siv lub kav hlau txais xov?

Baluns tau siv ntau thaj chaw rau kev hloov pauv ntawm qhov sib npaug & tsis sib npaug: ib cheeb tsam tseem ceeb yog rau xov tooj cua zaus, RF daim ntawv thov rau kav hlau txais xov. RF baluns yog siv nrog ntau lub kav hlau txais xov thiab lawv cov feeders los hloov cov khoom noj sib npaug lossis kab mus rau qhov tsis sib npaug.

Yuav ua li cas balun siv rau dipoles?

Zoo tshaj plaws rau lub qhov rais los yogOff-Center Fed Dipole yog qhov 4: 1 piv tam sim no balun. los yog DXE-BAL200H11-C. Off-Center pub kav hlau txais xov muaj ntau qhov kev pub khoom noj thaum piv rau cov pa dipole. Qhov no txhais tau tias lawv muaj kev nkag siab ntau dua rau lawv qhov chaw nyob ib puag ncig dua li qhov chaw pub noj dipole.

Pom zoo:

Yuav ua li cas txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau pom kev pom?

Yuav ua li cas txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau pom kev pom?

Txawm li cas los xij, corneal collagen cross-linking - cov txheej txheem qib siab tau pom zoo los ntawm US Food and Drug Administration (FDA) hauv xyoo 2016 - tuaj yeem txhim kho qhov pom kev hauv cov neeg mob txhua hnub nyoog. Corneal collagen cross-linking (CXL) tsis yog kho rau keratoconus, tab sis nws tuaj yeem pab tiv thaiv tus mob kom tsis txhob mob hnyav.

Vim li cas thiaj li ua rau cov khoom siv hlau semi-tiav squeal?

Vim li cas thiaj li ua rau cov khoom siv hlau semi-tiav squeal?

Semi-Metallic Nres Nres Nres: Semi-metallic brake pads yuav kav ntev dua li cov organic tab sis feem ntau tsim qhov tsaus nti nres plua plav uas npog sab nraud ntawm koj lub tsheb rims. … Cov ntaub qhwv no yuav ua suab nrov ntau dua li cov khoom siv nres thiab cov neeg tsav tsheb lub sijhawm yuav hnov squealing thiab sib tsoo.

Vim li cas thiaj siv cov khoom siv pseudo tseem ceeb?

Vim li cas thiaj siv cov khoom siv pseudo tseem ceeb?

Pseudocritical txoj cai muab a txhais tau tias txiav txim siab txo cov khoom sib tov kom cov khoom xyaw ntshiab sib xws hauv cov xeev kev sib raug zoo yuav raug siv los kwv yees cov khoom sib xyaw. Pseudo tseem ceeb yog dab tsi? 2.1 Taw qhia.

Vim li cas thiaj siv cov khoom siv hluav taws xob decoupling?

Vim li cas thiaj siv cov khoom siv hluav taws xob decoupling?

Decoupling capacitors pab muab lub chaw them nqi tam sim hauv zos uas tiv thaiv qhov hluav taws xob los ntawm dipping thiab txoj kev bypass uas dampens ringing. Lub suab nrov ntawm PDS kuj tseem nyob hauv zos damped, pab hauv cheeb tsam hauv cheeb tsam tsis cuam tshuam los ntawm ripple ntawm lub dav hlau fais fab uas tuaj yeem cuam tshuam rau lub voj voog.

Vim li cas pulverized thee thiaj siv rau hauv lub tshuab fais fab?

Vim li cas pulverized thee thiaj siv rau hauv lub tshuab fais fab?

Pulverized thee firing ua kom tiav combustion ntawm thee, yog li ua kom muaj kev ua haujlwm siab dua ntawm cov tshuab hluav taws xob. Nws yog feem ntau saws nyob rau hauv loj thee hluav taws xob hluav taws xob boilers. Qhov zoo dua qhov sib tsoo ntawm cov thee, qhov ua tau zoo dua nws cov combustion.