Tipi TL431 rauraraunga: whakaahuatanga, ti'araa, ngā

Tipi TL431 rauraraunga hanga i roto i te 70 te mutunga, Heoi, ka Kei te whānui tenei ra whakamahia te reira i roto i ngā mahi reo irirangi runaruna me te ahumahi. Tenei maramara Ko te stabilizer urungi wāhi e kua whakamahia whānuitia i roto i ngā kai mana.

Whakaahuatanga mahi

E toru anake titi, engari huna tekau transistors (comparator) i roto i tona whare TL431 rauraraunga. Ko te mahi o te pūrere, me te stabilizer tikanga rite. Heoi, e tika ana ki taua pōauautanga, te maramara he pūmautanga teitei waiariki, ka pai ake ngā āhuatanga taikaha. Ko te āhuatanga matua o te pūrere taua ko te kaha ki te whakamahi i te kaiwehewehe ki te huri i te stabilization ngaohiko waho i roto i 2.5-30 V. ētahi tauira kia rohe raro 1.25 V. te ara iahiko comparator e ngātahi e ki te rauraraunga hua TL431, ngā o te wāhanga e whai ake nei:

• integrated mana (rawa pūmau) tohutoro ngaohiko 2.5 V, hono nei te ki te tāuru kōaro o te comparator;
• he taumata tāuru tika;
• te transistor comparator putanga, te kaituku me te tango o e kua ngā ki te hoapā kaha;
• he ngōhiko mō te tiaki ki wehenga tawhiti hokinga whakamuri.

Ko te transistor he kawenga mōrahi o 100 mA me te ngaohiko mōrahi o - 36 V. I roto i te tikanga ki te uta i te comparator hanga-i roto i (aua whakatuwheratia i te transistor kongakonga putanga) titau i runga i tona tāuru kōnae i te ngaohiko ki runga ake i te tohutoro. Kei runga i te maramara tāuru ngaohiko kaiwehewehe arā, o rua parenga, tuwhaina e te reira i roto i te hawhe te uara ngaohiko. Tenei te tikanga e ka ina tomo te comparator te ara iahiko tāuru 5, te putanga o te kaiwehewehe whiwhi 2.5 V. Ki te ki te parenga iahiko ake i te ātete, he mea e tika ana ki te whakapiki ake i hoki me te supply ngaohiko. Huri i te reira i roto i e taea tenei ara iahiko te mahi rite te ngōhiko zener i roto i 2,5-36 V.

Taumu'a me te Scope

Kahore he kotahi wae supply te mana rorohiko, i roto i nei i reira i kore rau raraunga maramara TL431. Hoki, ka taea te kitea i te reira i roto i iti-te mana pākau i kai mana tata katoa, hei tauira, ka tohutohutia hoki waea pūkoro. Ka taea te whakamahi ēnei maramara no te opuaraa mana'ohia e kore anake (zener ngōhiko mō wae mana supply), engari ano hoki ki te waihanga i runga i to ratou pūtake o ngā rama me ngä püoho e faaroohia. Ki te aroturuki i enei whakaaro he plurality o ngā tawhā rerekē (engari tonu ngaohiko taketake ko). He maha kaupapa e hāngai ana TL431 rauraraunga, i roto i te mea e taea ki te huihui i te pūrere mō te whakahaere i te taumata wai i roto i te oko, te haumākū, me te pāmahana, te pēhanga hau illuminance inu ranei. kōwhiringa Whakarārangitia i - e kore e taea anake, te whakamahi o tenei maramara ko āhua pai rawa, reira katoa tei runga i te hinaaro o te kaihoahoa.

Tino maha, amateurs tīmata irirangi paanga i roto i te mea e taea te whakakapi i te TL431. Analogue, o te akoranga, te tīari. Na, ka taea e koe te whakamahi i te hua kawemai me motu KA431 KR142EN19A pūrere K1156ER5h.

Hei whakarāpopoto

He tino pono Integrated iahiko "Texas Instruments" kamupene, te mea i te whānuitanga whakahaere whanui, ngāwari ki te whakamahi, me te tino nui, he utu utu. Nā ki ona āhuatanga, hua reira nui atu i wha tekau nga tau, me te he ano rongonui.