FMUSER Wirless Transmèt videyo ak odyo pi fasil!
es.fmuser.org
it.fmuser.org
fr.fmuser.org
de.fmuser.org
af.fmuser.org -> Afriken
sq.fmuser.org -> Albanyen
ar.fmuser.org -> Arab
hy.fmuser.org -> Armenian
az.fmuser.org -> Azerbaydjan
eu.fmuser.org -> Basque
be.fmuser.org -> Belarisyen
bg.fmuser.org -> Bulgarian
ca.fmuser.org -> Katalan
zh-CN.fmuser.org -> Chinwa (senplifye)
zh-TW.fmuser.org -> Chinwa (Tradisyonèl)
hr.fmuser.org -> Kwoasyen
cs.fmuser.org -> Czech
da.fmuser.org -> Danwa
nl.fmuser.org -> Olandè
et.fmuser.org -> Estonyen
tl.fmuser.org -> Filipino
fi.fmuser.org -> Finnish
fr.fmuser.org -> Franse
gl.fmuser.org -> Galisyen
ka.fmuser.org -> Georgian
de.fmuser.org -> Alman
el.fmuser.org -> Greek
ht.fmuser.org -> Kreyòl ayisyen
iw.fmuser.org -> ebre
hi.fmuser.org -> Hindi
hu.fmuser.org -> Hungarian
is.fmuser.org -> Icelandic
id.fmuser.org -> Endonezyen
ga.fmuser.org -> Ilandè
it.fmuser.org -> Italyen
ja.fmuser.org -> Japonè
ko.fmuser.org -> Koreyen
lv.fmuser.org -> Latvian
lt.fmuser.org -> Lithuanian
mk.fmuser.org -> Masedwan
ms.fmuser.org -> Malay
mt.fmuser.org -> Maltese
no.fmuser.org -> Norwegian
fa.fmuser.org -> Pèsik
pl.fmuser.org -> Polonè
pt.fmuser.org -> Pòtigè
ro.fmuser.org -> Romanian
ru.fmuser.org -> Ris
sr.fmuser.org -> Sèb
sk.fmuser.org -> Slovak
sl.fmuser.org -> Slovenian
es.fmuser.org -> Panyòl
sw.fmuser.org -> Swahili
sv.fmuser.org -> Syèd
th.fmuser.org -> Thai
tr.fmuser.org -> Tik
uk.fmuser.org -> Ikrenyen
ur.fmuser.org -> Oudou
vi.fmuser.org -> Vietnamese
cy.fmuser.org -> Welsh
yi.fmuser.org -> Yiddish
De dyagram modulation sikwi FM yo pataje
FM, sètadi: modulation frekans, modulation frekans, refere a metòd la modulation nan ki frekans nan konpayi asirans lan wo-frekans chanje ak siyal la modulation. Anplitid FM la rete san okenn chanjman. Kòm distans k ap resevwa a ogmante, anplitid la diminye akòz atenuasyon pwopagasyon, ak degre nan chanjman frekans siyal FM Detèmine pa siyal la modulation. Jan yo montre anba a.
Jenerasyon FM frekans modulation siyal la sitou itilize karakteristik varyab kapasite nan junction kapasite yon dyòd a jonksyon varactor oswa yon triode pou chanje kapasite sikwi sonan an epi reyalize objektif modulation frekans lan.
Frekans siyal FM la gen rapò ak anplitid siyal modulation la.
Pou egzanp, se yon vag sinis itilize kòm siyal la modulation. Lè anplitid vag sinis la se zewo, frekans aktyèl siyal FM la se frekans frekans konpayi asirans lan, se sa ki frekans sant lan. Lè anplitid la ogmante nan direksyon pozitif, frekans aktyèl la ogmante sou baz frekans sant lan, ak vis vèrsa.
Pi gwo a anplitid nan siyal la modulation, pi gwo a devyasyon nan frekans aktyèl la nan siyal la FM soti nan frekans lan sant. Sa a se ki jan FM transmèt enfòmasyon.
Metòd FM ka divize an FM dirèk ak endirèk FM.
1, modulation frekans dirèk
FM dirèk se metòd FM ki pi souvan itilize. Li itilize siyal la modulation dirèkteman kontwole osilator a wo-frekans chanje paramèt yo bouk akor, kidonk chanje frekans lan pwodiksyon nan osilator la. Jan yo montre nan figi ki anba a, li se dyagram nan blòk prensip nan dirèk FM.
Figi sa a montre yon sikwi modulation frekans aplike ak yon dyòd a jonksyon varactor.
Frekans modulation sikwi reyalize ak dyòd a jonksyon varactor
Prensip la se ke yon kondansateur twa-pwen osilator ki konpoze de yon tranzistò VT, elatriye, frekans lan osilasyon detèmine pa L ak C2 kous la sonan. Se vòltaj la siyal modulation chaje sou dyòd a jonksyon varactor nan R1, se konsa ke PN junction kapasite nan VD chanje kòmsadwa.
Depi VD a konekte nan paralèl ak kous la sonorite LC, chanjman nan kapasite nan junction pral chanje paramèt yo nan sikwi a sonorite LC, se konsa ke frekans lan osilasyon chanje ak anplitid la nan siyal la modulation. Siyal FM final la soti nan tiyo L nan C4.
Figi sa a se yon sikwi modulation frekans reyalize ak yon triode.
Frekans modulation sikwi reyalize ak triode
Prensip la se ke yon kondansateur twa-pwen osilateur ki konpoze de yon tranzistò VT, elatriye, frekans lan osilasyon detèmine pa L1, C3 kous la sonan ak junction a kapasite de VT. Siyal la modulation chaje baz la nan tranzistò a VT nan C1, se konsa ke kapasite nan junction nan VT chanje kòmsadwa. Se konsa chanje paramèt yo nan tank la sonan LC, se konsa ke frekans nan osilasyon chanje ak anplitid la nan siyal la modulation. Siyal FM final la soti nan pèseptè VT a C6.
2, modilasyon frekans endirèk
Modilasyon frekans endirèk se entegre siyal la modulation ak yon sikwi entegre. Modilatè faz la pwogresivman pa siyal entegral nan yoga. Pwodiksyon ki soti nan modulateur faz la se siyal modulation frekans lan. Jan yo montre nan figi ki anba a, li se dyagram nan blòk prensip modulation frekans endirèk.
lòt pwodwi nou an:
Antre nan imèl yo ka resevwa yon sipriz
es.fmuser.org
it.fmuser.org
fr.fmuser.org
de.fmuser.org
af.fmuser.org -> Afriken
sq.fmuser.org -> Albanyen
ar.fmuser.org -> Arab
hy.fmuser.org -> Armenian
az.fmuser.org -> Azerbaydjan
eu.fmuser.org -> Basque
be.fmuser.org -> Belarisyen
bg.fmuser.org -> Bulgarian
ca.fmuser.org -> Katalan
zh-CN.fmuser.org -> Chinwa (senplifye)
zh-TW.fmuser.org -> Chinwa (Tradisyonèl)
hr.fmuser.org -> Kwoasyen
cs.fmuser.org -> Czech
da.fmuser.org -> Danwa
nl.fmuser.org -> Olandè
et.fmuser.org -> Estonyen
tl.fmuser.org -> Filipino
fi.fmuser.org -> Finnish
fr.fmuser.org -> Franse
gl.fmuser.org -> Galisyen
ka.fmuser.org -> Georgian
de.fmuser.org -> Alman
el.fmuser.org -> Greek
ht.fmuser.org -> Kreyòl ayisyen
iw.fmuser.org -> ebre
hi.fmuser.org -> Hindi
hu.fmuser.org -> Hungarian
is.fmuser.org -> Icelandic
id.fmuser.org -> Endonezyen
ga.fmuser.org -> Ilandè
it.fmuser.org -> Italyen
ja.fmuser.org -> Japonè
ko.fmuser.org -> Koreyen
lv.fmuser.org -> Latvian
lt.fmuser.org -> Lithuanian
mk.fmuser.org -> Masedwan
ms.fmuser.org -> Malay
mt.fmuser.org -> Maltese
no.fmuser.org -> Norwegian
fa.fmuser.org -> Pèsik
pl.fmuser.org -> Polonè
pt.fmuser.org -> Pòtigè
ro.fmuser.org -> Romanian
ru.fmuser.org -> Ris
sr.fmuser.org -> Sèb
sk.fmuser.org -> Slovak
sl.fmuser.org -> Slovenian
es.fmuser.org -> Panyòl
sw.fmuser.org -> Swahili
sv.fmuser.org -> Syèd
th.fmuser.org -> Thai
tr.fmuser.org -> Tik
uk.fmuser.org -> Ikrenyen
ur.fmuser.org -> Oudou
vi.fmuser.org -> Vietnamese
cy.fmuser.org -> Welsh
yi.fmuser.org -> Yiddish
FMUSER Wirless Transmèt videyo ak odyo pi fasil!
Kontak
adrès:
No.305 Sal HuiLan Building No.273 Huanpu Road Guangzhou Lachin 510620
Kategori
Bilten nouvèl nou