Chip TL431 datasheet: description, nadi, bayani dalla-dalla

Chip TL431 datasheet halitta a cikin marigayi 70s, duk da haka, da kuma a yau shi ne yadu amfani a mai son rediyo ayyuka da kuma masana'antu. Wannan guntu ne na game tuƙi stabilizer cewa an yi amfani da ko'ina a cikin daban-daban ikon kayayyaki.

bayanin aiki

TL431 datasheet yana da kawai uku dari, amma boye goma transistors (comparator) a cikin gidaje. The ayyuka na na'urar da wani al'ada stabilizer kama. Duk da haka, saboda irin wannan rikitarwa, guntu yana da mafi girma thermal kwanciyar hankali, da kuma inganta tauri halaye. A babban alama irin wannan na'urar ne ikon amfani da divider canza waje ƙarfin lantarki karfafawa a cikin 2.5-30 V. Wasu model ƙananan iyaka na iya zama 1.25 V. A comparator kewaye da aka hadedde cikin samfurin datasheet TL431, kunshi wadannan aka gyara:

• Hadakar ikon (sosai a barga) reference ƙarfin lantarki 2.5 V, wanda aka haɗa zuwa kishiya shigar da comparator.
• wani kai tsaye shigar da matakin.
• da comparator fitarwa transistor, da emitter da kuma haraji da wanda ake hada da ikon lambobin sadarwa.
• wani diode domin neman kariya daga polarity canjawar.

A transistor yana da wani matsakaicin kaya na 100 Ma kuma a kalla ƙarfin lantarki na - 36 V. Domin load a gina-in comparator (daidai da bude a cikin fitarwa transistor guntu) na bukatar a kan ta shigar da fayil mai ƙarfin lantarki mafi girma fiye da na tunani. Hade a kan guntu shigar da ƙarfin lantarki divider kunsha na biyu resistors, shi ya raba a cikin rabin da irin ƙarfin lantarki darajar. Wannan yana nufin cewa comparator za lokacin shigar da shigar da kewaye 5, da fitarwa na divider samu 2.5 V. Idan resistor ƙara da juriya, shi wajibi ne don kuma kara da irin ƙarfin lantarki wadata. Sai dai itace cewa wannan rangadi iya aiki a matsayin zener diode cikin 2,5-36 V.

Manufa da kuma bigiren

Babu wani guda kwamfuta wutar lantarki naúrar, a cikin abin da akwai wani kwakwalwan kwamfuta TL431 datasheet. Har ila yau, ana iya samu a kusan duk low-ikon pulsed ikon kayayyaki, misali, caji domin wayoyin hannu. Wadannan kwakwalwan kwamfuta za a iya amfani ba kawai ga manufar da aka nufa (zener diode domin samar da wutar lantarki raka'a), amma kuma don ƙirƙirar a kan su Dalili na daban-daban fitilu kuma audible ƙararrawa. Tare da wadannan na'urori saka idanu a jam'i na daban-daban sigogi (amma har yanzu na asali ƙarfin lantarki ne). Akwai da yawa makircinsu tushen TL431 datasheet, ta hanyar abin da yana yiwuwa su tara da na'urar for iko da ruwa matakin a cikin jirgin ruwa, da zafi da kuma yawan zafin jiki, gas matsa lamba ko ruwa illuminance. Jera zabin - ba wai kawai zai yiwu, da yin amfani da wannan guntu ne ainihin quite da kyau, duk ya dogara a kan shirye na zanen.

Sau da yawa sosai, sabon shiga rediyo yan koyo sha'awar abin da za a iya maye gurbinsu da TL431. Analogue, ba shakka, babu shi. Saboda haka, za ka iya amfani da shigo da kuma m kayayyakin KA431 KR142EN19A na'urar K1156ER5h.

don takaita

Hadakar kewaye "Texas Instruments" kamfanoni su ne sosai a dogara, shi yana da fadi da aiki range, sauki don amfani, da kuma mafi muhimmanci, yana da wani araha farashin. Saboda da halaye, da shi samar da fiye da shekara arba'in da yake har yanzu rare.