Ukumaka resistors - kuthiwa izindlela ezintathu eziyinhloko

Wonke umuntu obandakanyeka ukukhanda izimpahla ezisebenza ngogesi, ukwazi ukuthi ngezinye izikhathi kudingekile ukunquma yangaphandle umbono we Resistor of ihlelo lakhe. Indlela elula ulinganise ukumelana nomuntu ohmmeter, kodwa izinkinga akuyona njalo kungenzeka ukuba unsolder ke ngaphandle kokulimaza ibhodi wesifunda, ikakhulukazi multi-egqinsiwe, kodwa kwenzeka ukuthi kukhona ukungabaza mayelana ubuqotho oxhumana yangaphakathi. Uma une wesifunda, kungcono elula - ungakwazi ukubheka futhi ubone ukuthi R18, ngokwesibonelo, 47 ohms. Futhi uma kungaqali, futhi udinga ukuqonda, futhi isikimu kuyodingeka ukudweba?

Ngenhlanhla, Abenzi zikagesi uyavumelana nomunye, futhi kukhona standard wokugubha resistors. Yiqiniso, uye washintsha kula mashumi eminyaka amuva.

Okuvame kakhulu esikhathini sethu kuyinto resistors anemibala. Kulula kakhulu, futhi ufunde ihlelo, ephethe amakhadibhodi isiqophi semithombo into elula besikhashana. Le divayisi butholakale, kukhona kunoma iyiphi umsakazo, futhi ezishibhile kakhulu, ngakho ukukhumbula Inani lombala akudingekile. Ukumaka resistors ukuthi ukumelana isicelo upende amasongo imibala ehlukene, ngamunye okhombisa inombolo, a Okuphindaphinda noma ukunemba.

Emapheshana kuyatholakala kusuka ezintathu kuya kweziyisihlanu. Funda ukuba ngowokuqala, eduze komunye iziphetho. Ngokwesibonelo, emapheshana ezine. Okokuqala - brown, elinye - black, eyesithathu - ebomvu, owesine - grey. Kuyadingeka ukuba ushayele isiqophi semithombo lezi imibala, ulahlekile wesithathu (Kumele ukhethe khona isikhundla "cha"). Ayiqede nge ukunemba 1 kW 0, 05%. Uma-ke amaviyo amathathu, ukunemba 20%.

Ngezinye izikhathi kunesidingo ukubhekana ubuchwepheshe elidala Soviet, okuyizinto lisasebenza. Uma walaliswa amthethise, wayebonakala kunemibhalo eyayihunyushwe kabi futhi ugly, kodwa isikhathi uye babonisa ukukhuthazela okumangalisayo kwamanye amasampula yalesi imishini, futhi sekuyilo manje ngisho ngezinye izikhathi kubhekiselwa kuzo 'njengamadoda vintage. " Ukumaka Soviet ezenziwe resistors ngisho kulula umbala, basuke nje ebhaliwe ihlelo, isibonelo, 4K7 kusho 4700 ohms. Yilokho. Ngendlela elula necacile. Omunye ethile - okucashunwe kungenzeka phansi, RADIOZAVOD Soviet kuyaqabukela asetshenziswa "ume-up" inhlangano yabantwana bakwa-Ukumelana, isuke isithandwa amaJapane ukuze wonge isikhala ebhodini.

I miniaturization abakhiqizi elekthronikhi Impahla wakubeka phambi isidingo baziqambela izindlela ezintsha zokuthola izinsuku ukufakwa. Classical nokunamathisela ngomthofu resistors ngokusebenzisa izimbobo ebhodini ku "ukuma" noma "elele phansi" isikhundla kuthatha isikhala esiningi, futhi lena indlela entsha ukuhlangana a microplate - SMD. Kulesi emelela English - ngekhodi amagama amathathu: «ebusweni» - kwamanzi, «ukukhweza» - ukufakwa futhi «ubuchwepheshe» - kuyacaca ukuthi izindlela. izingxenye ezincane soldered ngqo ebusweni ithrekhi, ngaphandle izimbobo, nemilenze. Kwathatha kophawu resistors entsha, kanye nezinye izingxenye, ezifana diodes futhi capacitors kanye.

Ukumaka SMD resistors Kuthi okusikhumbuza indlela enhle ubudala Soviet. Futhi ephrintiwe izinombolo kanye namagama. Umehluko sisekhona. Le ncwadi akutholakali, uma kunesidingo njalo, «R» isetshenziswa njengoba iphuzu kuhlukane.

Ngokwesibonelo, 2183 kusho ukuthi 218 kufanele iphindwe 1000, iyakunqanda 218 ohms. Ukumelana, nge ukubekezelelana afika ku-10% ziphawulwe izinombolo ezine, lona wamuva kuqondiswe ezingeni lapho ukwakha eziyishumi futhi siphindwe umphumela wenombolo enamadijithi amathathu-ezakhiwe Izinombolo ezimbili zokuqala.

Kancane nzima SMD resistors nge class ephakeme izinga, nge ukubekezelelana 1%. Lapha degree of amashumi amasethi incwadi, isibonelo, D - 10 Cubed. Uma Resistor liqoshwe 10D, kuba 10 ohms.

Ngaphezu ukuhlangana amatafula, uchwepheshe uzodinga khulu, njengoba abalingiswa mancane kakhulu!