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Kananan Da Tattaunawa Z Parameters na Two Port Network

Electrical4u
Electrical4u
فیلڈ: Karkashin Kuliya da Dukkana
0
China

Z Parameters Manna ce?

Z parameters (ko da ake kira impedance parameters ko open-circuit parameters) suna da wani abu a cikin sayaradda mai sana'ar zahiri don bayyana tarihin hanyoyin zahiri masu sayaradda na zahiri masu sayaradda na zahiri. Wadannan Z-parameters suna amfani da su a Z-matrixes (impedance matrixes) don tabbatar da voltage da currents daga sayaradda.

Z-parameters suna kira “open-circuit impedance parameters”, saboda ake shafi a kan lokacin da aka ci gaba. Yana nufin cewa Ix=0, inda x=1, 2 yana nuna currents da ke jirgi da kuma kadan suka fito ta hanyar ports na two port network.

Z parameters suna amfani da su a kan Y parameters, h parameters, da ABCD parameters don model da kuma tattara transmission lines.

Yadda a Gano Z Parameters a Two Port Networks

Misalai a nan ya ba da cikakken yadda a gano Z parameters na two-port network. Kana iya cewa Z parameters suna kira impedance parameters, da wannan suna amfani da su a matsayin maimaita a wasu misalai.

Input da output na two port network suna iya zama voltage ko current.

Idan sayaradda ita ce voltage driven, za a iya bayyana haka.

voltage driven two port network z parameters

Idan sayaradda ita ce current driven, za a iya bayyana haka.

current driven two port network z parameters

Daga cikin duk waɗannan taswirai, ana iya cewa akwai kawai hanyarren biyu. Hanyarren biyu na voltage V1 da V2 da hanyarren biyu na current I1 da I2. Saboda haka, akwai kawai hanyarren biyar na voltage zuwa current, da su ne,


Wadannan hanyarren biyar suna kira parameters na sayaradda. Duk da cewa,

Saboda haka, wadannan parameters suna kira impedance parameter ko Z parameter.
Abubuwan Z parameters na
two port network, suna iya samun da hankali da kafin


da kuma kafin

A bincika ma a yi bayyana. Idan, a fuskantar output port na sayaradda ta hanyar open circuited kamar yadda ake bayyana a nan.

Two-port network with output open

A nan, saboda output an gaba, ba za a kasance current a cikin output port. Yana nufin cewa,


A nan, ratio na input voltage zuwa input current an tabbatar da shi a cikin tashar matematika kamar haka,


Wannan ya kira input impedance na sayaradda, idan output port an gaba. Ana kiran shi da Z11
Saboda haka,


Duk da haka,


A nan, Voltage source V2 an haɗa a port 2, wanda shi ne output port, da port 1 ko input port an gaba kamar yadda ake bayyana a nan

two port network with input open
Ba da kyau kuma kara mai rubutu!
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