Chip TL431 Itheyibhile yeengcombolo ezivelileyo: inkcazelo, isikhundla, iinkcukacha

Chip TL431 Itheyibhile yeengcombolo ezivelileyo wadala kwi 70s emva kwexesha, Noko ke, yaye namhlanje lisetyenziswa kwimisebenzi radio engahlawulwayo kunye noshishino. Le chip i esungulayo somfanekiso ebalulekileyo eye isetyenziswe kakhulu izinto ezahlukeneyo ngamandla.

Inkcazelo umsebenzi

TL431 Itheyibhile yeengcombolo ezivelileyo uye izikhonkwane ezintathu kuphela, kodwa ifihlwe transistors ezilishumi (comparator) kwezezindlu yayo. Imisebenzi ifowuni kunye somfanekiso eqhelekileyo efanayo. Nangona kunjalo, ngenxa iingxaki ezinjalo, nj kukho uzinzo ephakamileyo thermal, kwaye saphucula iimpawu kobulembu. Eyona iphambili kwisixhobo enjalo kukukwazi ukusebenzisa nomabi ukutshintsha uzinziso ombane lwangaphandle ngaphakathi 2.5-30 V. Ezinye iindlela komda omncinci babe 1.25 V. Le zeesekethe comparator ukuba ziyinxalenye Itheyibhile yeengcombolo ezivelileyo imveliso TL431, iquka la macandelo alandelayo:

• amandla oluhlangeneyo (izinzile kakhulu) reference ombane 2.5 V, oludityaniswe igalelo uguqulo lonikezelo lwe comparator;
• kwinqanaba ngqo igalelo;
• i transistor comparator imveliso, emitter kunye umqokeleli leyo idityaniswe abafowunelwa ngamandla;
• a diode for wokukhuselwa wokwephuka liguqulwe.

Le transistor uba umthwalo ubuninzi 100 ma kunye ombane ubuninzi - 36 V. Ukuze ulayishe comparator eyakhelwe-ngaphakathi (ngokulandelelana kuvulwa kwi imveliso transistor chip) ifuna kwigalelo lalo efayilini ombane ngaphezu njengereferensi. Okuqukiweyo kwi chip kwigalelo nomabi ombane ezibandakanya resistors ezimbini, iluthe kubini ixabiso ombane le. Oku kuthetha ukuba comparator uya xa bengena wesekethe igalelo 5, imveliso ye nomabi afumane 2.5 V. Ukuba resistor ukunyusa ukuxhathisa, kuyafuneka kwakhona ukwandisa kunye supply ombane. Kubonakala ukuba le wesekethe banako ukusebenza njenge diode zener ngaphakathi 2,5-36 V.

Injongo Scope

Akukho single unit unikezelo lwamandla computer, apho kwakungekho Itheyibhile yeengcombolo ezivelileyo chips TL431. Kwakhona, ingafunyanwa phantse yonke ephantsi-amandla idaleka izinto ngamandla, umzekelo, ezibiza ngokuba mobile phones. Ezi chips zingasetyenziswa kuphela injongo eyenzelwe (zener diode beeyunithi unikezelo mbane), kodwa kwakhona ukudala rhoqo lwabo ezinamanqwanqwa ezahlukeneyo alarms oluvakalayo. Ngezi zixhobo iliso nobuninzi ezahlukeneyo iparameters (kodwa ombane kusengundoqo i). Kukho amacebo amaninzi asekelwe TL431 Itheyibhile yeengcombolo ezivelileyo, apho oko kunokwenzeka ukuba bahlanganise icebo lokulawula kwinqanaba ulwelo isitya, i ukufuma kunye ubushushu, uxinzelelo igesi okanye illuminance fluid. kuluhlu okunokukhethwa - hayi nje kunokwenzeka, ukusetyenziswa chip ngokwenene kakuhle, konke oko kuxhomekeke ekuzimiseleni kwabo umyili.

Amaxesha amaninzi, amateurs wabaqalayo zerediyo nomdla yintoni indawo TL431. Togu, Kakade ke, zikhona. Ngoko ke, ungasebenzisa imveliso ngaphandle kunye zasekhaya KA431 KR142EN19A isixhobo K1156ER5h.

Ngamafuphi

yesekethe "Texas IZIXHOBO" iinkampani Integrated zithembekile kakhulu, iba ebanzi uluhlu yokusebenza, kulula ukuyisebenzisa, kwaye okona kubaluleke kakhulu, abe nokuchaza ixabiso efikelelekayo. Ngenxa iimpawu zayo, sivelisa iminyaka engaphezu kwamashumi amane kwaye usathandwa.