Q Bannaanka oo aqbaliddoodii raadiyaha

In radio kasta oo ku salaysan mabda'a of signal dhalmo la xushay meyxaanahaa by noqnoqoshada a side gaar ah, taas oo iyana waxaa lagu go'aamiyaa resonance Bannaanka oscillating, taas oo ah cunsurka ugu weyn ee circuit qadanayo. On sida loo saxayo inta jeer this, waxay ku xiran tahay tayada signal helay loo dooran doono.

Selectivity, ama selectivity aqbalana waxaa lagu go'aamiyaa sida calaamadaha fara dhaweynta waara loo dhimay doonaa, halka waxtar leh - la xoojiyaa. Q Bannaanka - waa lacagta ay ujeeddo muujiyeen marka la eego tirada, guusha hawshan.

inta jeer ee resonant Bannaanka waxaa lagu go'aamiyaa formula Thompson ah:

f = 1 / (2π√LC), kuna waari dhexdeeda

L - waa inductance ah;

C - qiimaha capacitance.

Si aad u fahamto sida oscillations dhacaan wareeg ah, waa in aad fahamto sida uu u shaqeeyo.

Oo capacitive, iyo naf dhibkeed yeelista looga hortago dhacdo ee koronto, laakiin waxa ay sameeyaan in ka soo hor jeedda. Sidaas darteed, waxay la abuuro xaalado for ah ee geedi socodka oscillation ah, oo ku saabsan la mid ah sida ay dhacdo on kasii darto marka labada Skaters ku qasbin in jiho oo kala duwan sidoo kale. Fikrad ahaan, beddelo qiimaha capacitor ama coil, hal gaari karo in inta jeer ee resonant of loop ku beego inta jeer side Idaacada gudbinta ah. The dambe u kala duwan yihiin, ka yar wuxuu noqon doonaa tayada signalka. In dhaqanka, aqbalana la soco by beddelo capacitance of capacitor ah.

Su'aasha dhan yahay, sida af badan fahamka doonaa garaafka jawaabta inta jeer ee qadanayo ah. Just si aad muuqaal ahaan u fahmi kara signal sida waxtar leh sida faragalin cadaadis u xoogaysan doonaan. Oo Q Bannaanka waa dhimaya, taas oo go'aan ka selectivity ee soo dhaweynta.

Waxaa lagu qeexay formula ah:

S = 2πFW / P, halkaas oo

F - inta jeer ee resonant Bannaanka,

W - tamarta ee Bannaanka resonant;

P - dhereg badan awood.

Q Bannaanka ku xiran ee isku midka ah iyo inductance of capacitor ah waxaa lagu go'aamiyaa formula soo socda:

S = R√ (C / L)

From qiyamka inductance iyo capacitance cad, iyo sida R, waxaa dib loogu soo yeero in ayan reactance gariiradda iyo qayb resistive. Sidaa darteed, circuit inta badan muujinayaan circuit oo ay ku jirto dhexdeeda saddex walxaad: capacitance C, L inductance iyo iska caabin R.

Q Bannaanka waa qiimaha dhigmayn in heerka of oscillation suuska dhexdeeda. The ka weyn waa, gaabis ah nasashada ee habka.

In dhaqanka, factor ugu weyn ee saamaynaya S Bannaanka waa tayada gariiradda, taas oo ku xiran permeability ah ee ay xudunta u ah, tirada markooda, heerka uu silig go'doomin iyo in ay iska caabin ah, iyo sidoo kale ka khasaaraha inta lagu guda jiro marinka ee hadda ee hirka sare. Sidaa darteed, si ay ula qabsadaan inta jeer ee maamulka waxaa inta badan loo isticmaalaa a capacitors variable, taas oo jira laba nooc oo canjeero aan gelin oo ka mid ah midba midka kale inta lagu jiro wareeg. Nidaamka noocan oo kale ah waa caadiga ah ee ku dhowaad dhammaan idaacadaha aan digital.

Si kastaba ha ahaatee, in qadanayo la daafigaw digital kale oo uu leeyahay wareeggeedii resonant u gaar ah, si fudud by isbedelka ay soo noqnoqoshada resonant duwan.