Kupatuka pafupipafupi

Pafupipafupi - ichi ndi chimodzi mwa zizindikiro za matalikidwe a oscillations wa wambiri thupi poyerekeza ndi phindu lake zikutanthauza. Mu sayansi, pali mitundu yambiri ya Phokoso la chikhalidwe chosiyana Mwachitsanzo, kusinthasintha mu munda mu atomu. Kuwonjezera mafunde mowiriza mu atomu chiyambi zachilengedwe, pali kusinthasintha, pakutchulidwa wa lopatsidwa mwa chifuniro cha munthu kuthetsa mavuto enieni akuwuka kwa zosowa za zochita za anthu. Nthawi zambiri mwa njira oscillatory kuthana ndi mavuto a kusintha mphamvu ndi / kapena zambiri, mwachitsanzo Ndi mu kulankhulana, wailesi, TV ndi ntchito, etc.

The ndondomeko ya akupereka mauthenga zikuphatikizapo yokonza ofanana munda mphamvu ndi kusinthasintha mawu ake a mbendera zothandiza ndipo kupoletsa chopatsilira chonyamulira pafupipafupi ndi kumatanthauza chizindikiro mfundo - matalikidwe ndi pafupipafupi. The chizindikiro choyamba ndi njila kumunda mphamvu, ndi Mzimuyo kufala mtunda, ndipo chachiwiri - ndi addressee. Pa nthawi imeneyi tili kokha chonyamulira chizindikiro, kuchita ntchito ya "chotengera" deta.

The zambiri zili m'munda mphamvu anadzetsa chizindikiro ndi kusintha lolingana iliyonse ya magawo ake. Zochita ntchito zosiyanasiyana kukweza magawo munda - ndi ndondomeko iyi akutchedwa kusinthasintha mawu chonyamulira pafupipafupi. Pankhaniyi, kusintha umagwiritsidwa ntchito nthandala kapena matalikidwe wa kupatuka chonyamulira pafupipafupi. Pa siteji ya kukhala wailesi kambirimbiri matalikidwe kusinthasintha mawu, kumene mfundo ali matalikidwe a chotengera chizindikiro. The kusintha molondola chonyamulira matalikidwe
Information mobwerezabwereza analogi chizindikiro. Ogula walandira chizindikiro
maziko a chotengera pafupipafupi, kenako allocates demodulator ali m'bukuli
zambiri. Pa mafurikwense otsika, ku yochepa yoweyula osiyanasiyana, pogwiritsa ntchito matalikidwe kusinthasintha mawu. sangathe Aika ndi kusintha matalikidwe a chotengera pafupipafupi, chifukwa chimene mbendera - phokoso chiŵerengero, chizindikiro zofunika za khalidwe la kulankhulana njira yafupika.

Komanso matalikidwe kusinthasintha mawu, kuti akupereka mauthenga ntchito pafupipafupi pa zimene kupatuka pafupipafupi ntchito. The ntchito pafupipafupi
mafananitsidwe - apamwamba phokoso chitetezo chokwanira, kotero akatswiri
Kulumikizana machitidwe ntchito zizindikiro yekha chastotnomodulirovannye. Chitsanzo cha ntchito zizindikiro chotero - VHF wailesi, TV, kulankhulana wapadera.

Kupatuka - pazipita chonyamulira pafupipafupi kusintha wachibale pafupifupi kufunika kwake. The sipekitiramu wa chonyamulira oscillation pafupipafupi-modulated zimadalira matalikidwe a mbendera zothandiza ndi matalikidwe ake sakhala zosiyanasiyana, umene kugwirizana bata ndi apamwamba kuposa poyamba.

chonyamulira pafupipafupi kwa zipangizo pafupipafupi kusinthasintha mawu amatchedwa modulators chizindikiro. udindo wawo kufala kwa chizindikiro wailesi - jenereta ulamuliro chopatsilira chonyamulira pafupipafupi. Mzimuyo kupatuka pafupipafupi
zofunika m'lifupi ndi bandiwifi kwa chopatsilira ndi wolandila.

Popeza lamulo chachikulu ndi kulankhulana njira - mwina zolondola kufala kwa mbendera yakale ija, bandiwifi a madera athandizira-linanena bungwe la wolandila ndi chopatsilira ayenera kukhala osachepera phindu awiri a pachiyambi bandiwifi chizindikiro. Komabe, apa tiyenera kuyang'ana kwa "golide zikutanthauza", chifukwa chimayambitsa kupatuka pa mbali chopatsilira zikhoza kugwirizana ndi oscillations parasitic chifukwa cha cheza extraneous onse pickups, ndi chilengedwe cha kusokonezedwa mwadala, ngati njira imodzi yochitira ndi kupotoza zokhudza chizindikiro - ndi kuletsa bandiwifi lapansi. Kawirikawiri kulankhula kwa ubale waukulu
Kupatuka makhalidwe - ndi akugwedeza gulu kachigawo sipekitiramu wa chizindikiro opatsirana.

Ngati kusinthasintha mawu zolozera yamtengo wapatali kwambiri, magawo onse, omwe
yodziwika ndi kupatuka pafupipafupi, ndi pafupifupi ukulu chomwecho. The kupatuka amayezedwa mayunitsi a pafupipafupi Hz.