Yintoni na ke amanzi iimpawu

Enye i parameters nawuphi na umgca conductive amanzi isici. Kuchaphazela ngakumbi ngayo unenxaxheba oluvela rhoqo transmission radio ndlela, apho ukusebenza encinane Ukungafani beesekethe kukhokelela igqwethwe okanye kakhulu kwimveliso. Kwelinye icala, kumntu ngamnye ikhompyutha ezinxulumene elinye kumsebenzi womnatha wobulali, ubuso elithi ngemihla "ukuvimba isici." Kufuneka kuqatshelwe ukuba ukubonakala kothungelwano Ethernet of isibini ephothiweyo unika umsebenzisi isiphelo Ungakhathazeki malunga izihlanganisi ezizodwa, earthing, njengoko izihlanganisi kunye terminators, njengoko kwakunjalo kunye imigca intambo yafakwa 10 megabit (okanye ngaphantsi). Kodwa, nkqu ngokuphathelele kwisibini ephothiweyo, ibinzana elithi "ukuvimba Uphawu" iyasebenza. Ngokubanzi, kwindlela yokusebenza kothungelwano computer obala ingakumbi kamva.

Ngoko ke, yintoni na amanzi luphawu? Njengoko sele kuchaziwe, le yenye iimpawu imigca conductive ngokusekelwe ngababhexeshi zalo. Igatya yokugqibela kuyimfuneko ukuze ukuxuba imigca enombala zothumelo data mihla kunye iingcingo zekopolo zakudala, ezo amandla iziphathi nje amasuntswana icala ukukhanya - kukho eminye imithetho. Eli xabiso ibonisa umgca kokuba ixabiso ukumelana wenkunkuma (umthombo modulated oscillations zombane). Musa ukubhidanisa ukuxhathisa, leyo kulinganiswa multimeter aqhelekileyo, zibe nokugocwagocwa ukuvimba uphawu engqongileyo, njengoko izinto ezahlukeneyo ngokupheleleyo ke. Le yokugqibela komntu akuxhomekekanga ekuzithandeleni ubude umqhubi (oku sele ngokwaneleyo ukuze bafikelele kwizigqibo malunga 'ukufana' yokunganyangeki). Emzimbeni, oko ilingana kwi ingcambu ye lomlinganiselo inductance (Henry) yomthamo (Farad). Amazwi encinane: nangona ukuba izibalo kusetyenziswa amacandelo yovukelo komgca, kweelana nokulatyuza beesekethe kusoloko izibalo uthathwa esebenzayo.

Kungcono ukuqwalasela yonke umzekelo. Khawucinge isekethi elula kuqulethe umthombo wamandla (generator, R1), izinikezeli ukuba ukuvimba uphawu (R2), kwaye umboleki (umthwalo, R3). Kwimeko ukulingana zonke zontathu resistances onke amandla wadlulisela ufikelela nkonzo kwaye lenza umsebenzi luncedo. Ukuba nayiphi inxalenye yale nxaki akanelisekanga, kukho intsebenziswano yokungafani. Kwindawo apho uwaphule umgca, kukho ngumtshangatshangiso kubonakala, yaye inxalenye amandla magnetic ebuyela - le generator. Ngako oko, kubalulekile ukuba ukwandisa amandla ayo ukuze kubuyekezelwe ubukhulu amandla kubonakala. Ngamanye amazwi, inxalenye amandla wachitha "nto", oko kuthetha ukulahlekelwa kunye nokusebenza non-kangangoko. Ukongezelela, kwezinye iimeko, ukubhidana ngokubanzi kuphazamisa ukusebenza yonke emgceni.

Ke kaloku, emva kwinethiwekhi computer, apho uxhathiso yomtshangatshangiso ludlala indima ebalulekileyo. Kuba imigca ezisekelwe intambo yafakwa (50 Ohm) Kubalulekile ukuba bahloniphe imiqathango: ukuxhathisa amakhadi womnatha kunye umqhubi phakathi kwabo linokulingana. Kuphela kulo mzekelo, kusebenza inkqubo nokupheliswa kunye nozinzo. Ukuba nayiphi na inxalenye umgca cable kukuba ngokwasemzimbeni a elula omncinane (ukuba akuxhome umqhubi umthwalo), ngoko ngenxa yeenguqu kwi sangqa izinikezeli kule ndawo iya kutshintsha ukuvimba iimpawu, apho kuza kuboniswa yomtshangatshangiso, umhla wokuwiselwa phantsi le nkqubo. Kulo mzekelo umgca kulinganiswa ukumelana esebenzayo akuvumelekanga ukutshintsha kakhulu (izixhobo iindleko ephantsi abangabhalisiyo ukwanda resistance). Imizamo ukubuyisela izinikezeli ulutya ngelotha kwi isahlulo ngakumbi sibe sibi; kuba iya kuphela ukudlulisa ukumelana, kunye umxube iindawo ezahlukeneyo (tin, ubhedu) apho ngamaza ukusasaza ngenye indlela.

Njengoko othandwayo izihlangu ezijijekileyo isigaba 5 ukuvimba uphawu yi ohms 100. Ngenxa kule recovery ukuze soldered, yaye linegunya.