UbuchwephesheElectronics

Isilinganiso sokumelana - izindlela zokurekhoda

Abaphikisi yizici zamasektha kagesi aphikisana nokuhamba kwamandla kagesi. Zisetshenziswa kuzo zonke izifunda zombane, ngisho nasezifundeni ezincane kakhulu. Kunezimpikiswano zezinto ezilandelayo: amandla, ukubaluleka kokumelana nomuntu, isigaba sokunemba, uhlobo, njll Kulesi sihloko sizocabangela umqondo onjalo njengenani lempi. Kuyini? Inani eliqokwe ngokulingana le-element element lichaza ukubaluleka kwezinga lokumelana kwangaphakathi kuleyo ndlela yombane kagesi. Ngobunjiniyela bokusebenza kagesi, ukubaluleka kokumelana nakho kuboniswa incwadi yesiLatini R. Kuyinto yesiko ukubhala leli xabiso kumayunithi afana ne-Ohm. Leli yunithi lithola igama layo ngokuhlonipha isazi sezidumile saseJalimane uGeorg Simon Ohm, owaziwa ngomsebenzi wakhe emkhakheni wokutadisha kwamandla kagesi. Kungani ngidinga ukwazi inani labaphikisi? Kungaba yini ukukhetha okuhle kwezakhi ze-scheme ehlongozwayo noma ukhethe i-analog yokulungisa amadivaysi.

Ake sicabangele izindlela zokurekhoda amanani okulingana okuphikisana nawo esimweni sezinto. Kunezindlela ezintathu zokumelana nabamelana: idijithi - ihlanganisa izinombolo kuphela; I-Symbolic - ihlangene, kanye nezibalo lapho kukhona nezinhlamvu; Futhi, ekugcineni, umbala - kuyisuchungechunge samaqembu ahlukahlukeneko wemilayezo ehlukene, inani leenqhema lihluka, ukusuka ku-3 ukuya ku-5.

Okulandelayo, sizohlaziya ukuthi inani lomphikisi lirekhodiwe, kuye ngokuthi hlobo lunikazi. Izinto eziqhubekayo zokumelana nohlobo lwe-wire ziyi-cylindrical barrel. Lezi zici ziphawulwe ngazo zonke izindlela ezintathu. Ukurekhoda kwe-Digital kusetshenziselwa abaphikisayo abanikazi abangamanani abo abadluli 999 ohms. Kubonakala kanje: 2.0; 220; 750. Kusho, ngokufanele: 2 Ohm, 220 Ohm no 750 Ohm. Uhlobo olurekhodiwe lwalolu hlobo lusebenzisa izinhlamvu zesiLatini esikhundleni se-comma : R - kusho eyodwa; K is kilo, isib. 1000; M - mega, okungukuthi i-1000000. Kuvela ukuthi ngale ndlela yokurekhoda, ukuze uthole inani lomphikisi, inani lezinombolo kufanele landiswe inani lencwadi. Isibonelo serekhodi elinjalo: 220 R - kusho 220 Ohm; 3K2 - kusho 3200 Ohm; 1M1 - kusho 1100 kΩ.

Ukukhishwa kombala we-value value okuqoshiwe kusetshenziswe kuwo wonke umzimba we-cylindrical of element. Emibhikishi eyenziwe ngamaSoviet, ukumaka kwasetshenziselwa ukushintshela ohlangothini olulodwa, lokhu kubonise ukuqala kokubala kokubala. Ezikhathini zanamuhla, ibhakhodi yokugcina ibhakhodi ihlale igolide noma isiliva, futhi kusho isigaba sokunemba ukumelana (ama-5 noma amaphesenti angu-10). Uma kwenzeka ukuthi ukumaka kuqukethe amaqembu amathathu kuphela, isigaba sokuzenzakalela sokuzenzakalela singamaphesenti angu-20. Ukubhalisa, okuhlanganisa ama-3-4 ama-band, kokubili kokubili kuqukethe inani le-value value, futhi okwesithathu-inani le-multiplier. Ukufakwa kwezingxenye ezingu-5-6 ezinkundleni zokuqala ezintathu kuqukethe inani le-nominal, futhi okwesine - inani le-multiplier.

Uhlobo olulandelayo lokumelana yi-resistor chip noma ukumelana kwe-SMD. Ema- resistors anjalo , ukumaka kungaba yedijithali nokufanekisa. Kucatshangelwa ukuthi: ku-digital marking, amadijithi okuqala abonisa ukubaluleka kwehlelo, kanti owokugcina ubonisa inani lezero; Ngokomfanekiso - amadijithi amabili okuqala abonisa inhlangano, futhi umlingisi wokugcina ubonisa ukubaluleka komphindiseli.

Izimpikiswano eziguquguqukayo zisebenzisa inani elilinganiselwe lokuqopha lokurekhoda ngosizo lwezinombolo nezinhlamvu ze-alfabhethi yesiLatini.

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