Izinhlelo zekheli lomphakathi (PA)zisetshenziswa kabanzi emafektri, ezikoleni, ezindaweni zokuthutha, nasezindaweni zezentengiselwano ukuze kumenyezelwe, kuculwe umculo wangemuva, kanye nokuxhumana okuphuthumayo.

Uma uklama uhlelo lwe-PA, omunye wemibuzo evame kakhulu yile:

Uyini umehluko phakathi kwezikhulumi ze-voltage engaguquki kanye nezikhulumi ze-impedance ephansi?

Zombili izinhlobo zisetshenziswa kabanzi ezinhlelweni zomsindo, kodwa zifeza izinjongo ezahlukene kuye ngobukhulu nezidingo zokufakwa.

Ziyini Izikhulumi Ze-Voltage Ezihlala Zikhona?

Izipikha ze-voltage ezihlala njalo zivame ukusetshenziswa ku-izinhlelo ezinkulu zekheli lomphakathiLezi zinhlelo zivame ukusebenza ku-70V noma 100V, yingakho zivame ukubizwa ngokuthiIzinhlelo zesipikha ezingama-70V/100V.

Kuhlelo lwe-voltage oluhlala lukhona, i-amplifier ikhipha isignali ye-voltage ephezulu, futhi isikhulumi ngasinye sifakai-transformer eyakhelwe ngaphakathiLe transformer ivumela abafaki ukuthi bakhethe amazinga ahlukene wamandla afana nalawa:

3W

6W

10W

20W

Ngenxa yalolu hlobo lomklamo, izikhulumi eziningi zingaxhunywangokuhambisanayo ngomugqa wekhebula ofanayo.

Izinzuzo Zezinhlelo Ze-Voltage Ezihlala Njalo

Kulula ukuxhuma izikhulumi eziningi

Ifanelekela ukudluliswa komsindo okude

Ukusatshalaliswa kwamandla okuguquguqukayo

Umklamo nokufakwa kwesistimu okulula

Izicelo Ezijwayelekile

Izipikha ze-voltage ezihlala njalo zivame ukusetshenziswa ku:

amafektri nezindawo zezimboni

izikhumulo zezindiza neziteshi zesitimela

izikole namakhampasi

izitolo ezinkulu

izindawo zokupaka kanye nezindawo zangaphandle

Lezi zindawo zivame ukudingainani elikhulu lezikhulumi kanye nezindawo ezibanzi zokumboza.

Ziyini Izikhulumi Eziphansi Zokuvinjelwa?

Izipikha ze-impedance ephansi zisebenza ku-Ama-ohm angu-4 noma ama-ohm angu-8bese uxhuma ngqo ku-amplifier ngaphandle kwe-transformer.

Lezi zinhlelo zivame ukusetshenziswa ezindaweni laphoikhwalithi yomsindo iyona nto eza kuqala.

Izinzuzo Zezinhlelo Zokuvimbela Okuphansi

Ikhwalithi yomsindo engcono

Ukuxhumeka okuqondile ku-amplifier

Ukudluliselwa kwamandla okusebenzayo

Izicelo Ezijwayelekile

Izikhulumi ze-impedance ephansi zivame ukusetshenziswa ku:

izinhlelo zomsindo zasekhaya

amakamelo omhlangano

izindawo zokudlela namabha

izindawo zomculo obukhoma

izinhlelo zomsindo zeshashalazi nezesiteji

Noma kunjalo, lezi zinhlelo zivame ukuklanywa ukuzeukufakwa okuncane okunezipikha ezimbalwa.

I-Constant Voltage vs Impedance Ephansi: Umehluko Obalulekile

Yisiphi Isistimu Yesipikha Okufanele Uyikhethe?

Ukukhetha phakathi kwezipikha ze-voltage engaguquki kanye nezipikha ze-impedance ephansi kuncike kuhlelo lokusebenza.

Izinhlelo ze-voltage ezihlala zisebenza kahle uma:

indawo yokufaka inkulu

kudingeka izikhulumi eziningi

amabanga ekhebula amade

uhlelo lusetshenziselwa izimemezelo noma umculo wangemuva

Izinhlelo ze-impedance eziphansi zingcono uma:

ikhwalithi yomsindo iyona ebaluleke kakhulu

Kudingeka izikhulumi ezimbalwa kuphela

indawo yokufaka incane kakhulu

Isiphetho

Izipikha ze-voltage ezihlala njalo kanye nezipikha ze-impedance eziphansi zombili zibalulekile ekwakhiweni kwesistimu yomsindo.

Izinhlelo ze-voltage ezihlala njalokuyisinqumo esijwayelekile sokufakwa kwamakheli amakhulu omphakathi ngoba asekela izipikha eziningi kanye nebanga elide lekhebula.

Izinhlelo ze-impedance eziphansiNgakolunye uhlangothi, zifaneleka kangcono ezinhlelweni zomsindo ezincane lapho kudingeka khona ikhwalithi yomsindo ephezulu.

Ukuqonda lo mehluko kusiza onjiniyela nabafaki ukuthi bakhethe ikhambi elisebenza kahle kakhulu kumaphrojekthi abo esistimu ye-PA.