Enqubweni yokwakheka kwesizungu, ama-resistors yizona eziyisisekelo ze-elekthronikhi, kanye nokukhethwa kwazo kanye nesicelo abanomthelela obalulekile ekusebenzeni kwalo lonke uhlelo.Azikho izinhlobo eziningi kuphela zokumelana, kepha uhlobo ngalunye lwe-resistor lunezimpawu zalo ezihlukile nezinkundla zohlelo lokusebenza.Ukusuka kuma-common Carbon amafilimu amelana nawo kanye nabamelana ne-metal film bahlukanise izinhlobo ezikhethekile nama-thermitors, badlala izindima ezahlukahlukene esifundeni.Indima.Konjiniyela abasha emkhakheni we-Circuit Design, ukuqonda okuphelele kwamapharamitha ayisisekelo abamelana nokucatshangelwa lapho ukhetha isinyathelo sokuqala sokuqinisekisa ikhwalithi yomkhiqizo.
Amapharamitha ayisisekelo kanye nomhlahlandlela wokukhetha abaphikisayo
Ukukhethwa komphikisi akugcini ngokumelana kwayo okukhohlisayo kanye nephutha elivumelekile, kodwa okubaluleke kakhulu, amandla ayo alinganiselwe nokumelana namandla kagesi.Lawa mapharamitha amabili ahlobene ngokuqondile nokuqina nokwethembeka komjikelezo.Isibonelo, lapho amanje egeleza ngokusebenzisa umjikelezo ku-100mA kanye nokumelana kungu-100ω, ukusetshenziswa kwamandla ku-Resistor yi-1W.Uma ukhetha ukumelana nokulinganiselwa kwamandla anganele, kungenzeka kwehluleke ngenxa yokushisa ngokweqile.Ngakho-ke, lapho ukhetha i-Resistor, kufanele uqinisekise ukuthi amandla alinganiselwe we-resistor angahlangabezana nezidingo zohlelo lwangempela.Ngokuvamile kunconywa ukuthi umugqa wokukhetha wamandla alinganiselwe ungaphezu kwezikhathi ezi-2.Ngendlela efanayo, ukukhethwa kwenani lokumelana ne-voltage kufanelekile futhi kubheke ukuthi kube namandla aphezulu kakhulu angahle ahlangane kwizicelo zangempela zokugwema ukwehluleka kwesekethe ngenxa yokuphikiswa.
Izindima eziningi zokumelana ezisekelweni
Ukusetshenziswa kwabaphikisayo emibuthanweni kudlulela ngalé kokukhawulelwa okuyisisekelo kanye nemisebenzi yokuhlukanisa i-voltage.Zisetshenziswa kabanzi ekwakhiweni kwezihlungi, zibambezele amasekethe, kanye nemibuthano ye-bias.Ikukhulu okufanele ukusho ukuthi i-0 i-Resistor, edlala izindima ezahlukahlukene ezibalulekile kuzicelo ezibonakalayo ezibonakala zilula.Ukusuka ekusekelweni kwephuzu elilodwa lezizathu ze-analog nezedijithali kuya ekusetshenzisweni kwesiginali ye-frequency frequency, 0Isibonelo, ngokusebenzisa i-0 i-Resistors ukuxhuma i-Analog Ground kanye nomhlaba wedijithali, ukuphazamiseka okubangelwa ukuxhumana okuqondile endaweni enkulu kungavikeleka ngempumelelo ngenkathi kugcinwa ubuqotho bocingo lomhlabathi.Ngaphezu kwalokho, ngesikhathi sokulungisa iphutha nokusebenza kahle kwesigaba, ukusetshenziswa kwama-0
Ukuhlaziywa okuphelele nokusebenza kohlelo lokusebenza
Ukukhetha kahle ukumelana nokusebenzisa okugcwele kweqhaza labo ekwakheni isifunda kubalulekile ekuthuthukiseni ukusebenza komkhiqizo nokwethembeka.Onjiniyela kufanele babe nokuqonda okujulile kwezimpawu kanye nezidingo zohlelo lokusebenza zabamelana nazo ekuqaleni kokwakheka, futhi zibheke ngokuphelele izidingo zesifunda sangempela.Ngokukhetha okulungile kwamapharamitha ayisisekelo wokusetshenziswa okugcwele kwendima yawo, ukuqina okuphezulu nokuqina komkhiqizo kungaqinisekiswa ezansi komklamo wesifunda.