LM317 regulator nāianei te whakarite

E toru-kāpeka LM317 regulator te whakarite whakarato kawenga o 100 mA nāianei. putanga awhe ngaohiko he 1.2 ki te 37 V. Ko te tino ngāwari ki te whakamahi i te pūrere, me te titau noa te rua o parenga waho e whakarato te ngaohiko whakaputa. Plus, He kōwhiringa pai atu i tauira i rite nei ki te ngaohiko supply whakaritea i te putanga i te tapepe o te tawhā mahi.

whakaahuatanga

LM317 - ngaohiko me te stabilizer nāianei e ngā mahi noa, ka momotuhia hāngai atu titi mana. I roto i te mahi tonu, e kore e te pūrere Me ki kia hono ki te pūnga atu. hanga He okotahi te ina ko te pūrere i te tawhiti nui i te tātari mana supply tuatahi. I roto i tenei take, te tāutanga hiahiatia o te pūnga tāuru karo.

Ko te putanga o te orotahi taea ki te whakapai ake i te mahi o te LM317 regulator nāianei. Ka rite ki te hua, nui haere kaha me te uara pōkare tūao o te whakarea whakaene. he ahua taua uaua tino pai ki te whakatutuki i roto i te tahi atu analogues toru-kāpeka.

Whakaaro o te pūrere i raro i whakaarohia ko te whakakapinga e kore anake o stabilizers ki tohu putanga pūmau, engari mo te whanui o te tono ngā. Hei tauira, e taea te whakamahi LM317 nāianei regulator ki iahiko te kaha-tiketike. I roto i tenei pūnaha pānga kōwae takitahi te rerekētanga i waenganui i te wāhi me te huaputa ngaohiko. kia haere tonu ake mahi o te pūrere i roto i tenei aratau, tae noa e kore e nui ake te rerekētanga i waenganui i te reiti e rua (te wāhi me te putanga ngaohiko) te wāhi tīkina mōrahi.

āhuatanga

E tano ia tapao e he e tika ana mō te mauhaa pini whakarite ohie te regulator nāianei LM317. Ka taea te whakamahi ratou rite te stabilizer pū, mā te tūhono iahiko pūmau i waenganui i te putanga e rua.

Te hanga i te puna supply tuarua whakahaere i kore-roa poto-iahiko, hanga taea e te mä te tohu ngaohiko i runga i te putanga pūnaha mana. e pupuri ana i te hōtaka ia i te kuwaha ki te whānuitanga o 1.2 volts, he iti rawa hoki te nuinga o te kawenga. Na hanga he transistor regulator LM317 ngaohiko nāianei te i roto i te paerewa KI-koiwi 92 aratau o pāmahana whakahaere mai i -25 ki te +125 degrees.

āhuatanga o

taputapu tirohia oreore maitai mo te hoahoa o poraka ohie me whakaritea kai mana. Ka taea te whakaturia te tawhā, ka fakatonutonu i roto i ngā o te kawenga.

Urungi nāianei i runga i te LM317 stabilizer kua te āhuatanga e whai ake nei:

• Huaputa ngā ngaohiko - i 1.2 ki te 37 volts.
• Ko te nāianei kawenga ki te mōrahi - 1.5 A.
• He he he tiaki ki iahiko poto.
• He wiki ara iahiko i pukā.
• Ko te hapa i runga i te ngaohiko putanga e kore te mea neke atu i te 0.1%.
• Ko te whare IC maramara - te momo TO-220, KI-3 D2PAK ranei.

Taraiwa stabilizer nāianei mō te LM317

I ona wa e te pūrere i roto i te pātai e whakamahia i roto i kai mana arahina. I tua atu he hakari reira he taiawhio ohie i roto i i whakahohe te parenga, me te maramara te.

I te tāuru pūtake mana ngaohiko e tukua, a te hono te whakapā matua ki te putanga tairitenga te whakamahi i te parenga. I tua atu, puta whakawhāititanga ki te pitoake o te arahina. Ko te stabilizer ara iahiko LM317 tino rongonui o nāianei rite i whakaahuatia ana i runga, whakamahi te tātai e whai ake nei: R = 1/25 / I. Kei hea ahau - ko te putanga o nāianei pūrere, rerekē tona ngā waenganui i 0, tukua 01-1.5 A. iahiko i roto i te rahi 0, 8-120 ohms. He toreretanga ki parenga iahiko mana tatau e te tātai: R = IxR (2).

häunga te mōhiohio whiwhi te. parenga Pūmau whakaputaina ki te ātete whakamutunga horapa iti. pānga tenei te rironga mai o tohu utu. Hei whakatau i tēnei raruraru, i roto i te kaupapa, he atu mana aueue parenga iahiko e hiahiatia ana.

Pai me ngā raruraru

E whakaatu ana Practice e te mana mahi o te iahiko, ko te pai ki te whakapiki ake i roto i te purara rahi i te 30%, me te i roto i te wehenga iakawe iti - i te 50%. I tua atu i te maha o ngā painga, arahina LM317 kua he torutoru drawbacks regulator nāianei. I roto ia ratou:

• kakama Iti.
• Ko te hiahia ki te tango wera i te pūnaha.
• AC Stabilization mo 20% o te uara rohe.

A ape i te mau fifi i roto i te mahi o te pūrere ka whakamahi tauwehe whakawhiti.

E tano ia tapao e te mea e hiahia ana koe ki te hono kaha-tiketike te kaha wae LED o 700 milliamps hiahiatia ki te tātai i te uara o te tātai: R = 1, 25/0, 7 = 1.78 ohms. ka hei Power toreretanga te whakaatu i 0, 88 Watts.

hononga

Tātaitanga LM317 regulator nāianei e hāngai ana i runga i te maha o ngā tikanga o te hononga. Kei raro ko nga kaupapa taketake:

1. Ki te whakamahi koe i te Q1 momo mana transistor, ka taea e te tiki koe i waho i te heatsink nāianei putanga moroiti o 100 mA. Ko reira nui ki te whakahaere i te transistor. Ka rite ki te kupenga haumaru i tiaki nui D1 me D2 e whakamahia te p tiaki, me te pūnga -hiko whakarara kua te mahi ki te whakaiti i te haruru papamuri. A, no te whakamahi i te Q1 transistor, te kaha putanga mōrahi o te pūrere 125 Watts.
2. I roto i te tahi atu hoahoa whakarato iti supply o nāianei, me te mahi pūmau o LED. atekōkiri Motuhake taea ki a koe kaha i te huānga o te kaha i 0, 2 Watts ki 25 volts.
3. I roto i te tahi atu hoahoa tono ngaohiko tukupu hiko i te tāupe whatunga i 220 Watts ki te 25 Watts. Ki te awhina o te piriti ngōhiko e puta AC ngaohiko ki te mehua tūturu. Ano, kua mānia hape katoa e tika ana ki te momo C1 pūnga e whakarato mahi pūmau o te regulator ngaohiko.
4. Te hoahoa waea e whai ake ko tetahi o te māmā. Te ngaohiko tukua i te tuarua awhiowhio o te hiko i te 24 volts, whakatikaina te i haere i roto i te tātari, me te e whiwhi i roto i te auau issuance aumou 80 volts. mawehe tenei rawa i te paepae supply ngaohiko mōrahi.

E tano ia tapao e hoki e taea te kohia i te rihi pākahiko ohie i runga i te pūtake o te maramara i raro i whakaarohia o te pūrere. Rite i te regulator rārangi paerewa ki te tohu putanga ngaohiko whakarite. I roto i te tūranga rite kia mahi pūrere microassembly.

analogs

he maha o analogues i roto i nga hokohoko kāinga me te ke LM317 stabilizer mano kua. Ko te rongonui tino o ratou ko nga rama e whai ake nei:

• Domestic KR142 whakarerekētanga me KR115 EN12 EN1.
• tauira GL317.
• Momo SG31 me SG317.
• UC317T.
• ECG1900.
• SP900.
• LM31MDT.

Reviews

Mai te mau i te urupare i ngā kaiwhakamahi, pakari a te regulator pūrongo me ona mahi. Rawa ka tae mai te reira ki te whakawhāititanga ki ngā āhuatanga arahina, te ngaohiko ki te 50 volts. Ohie tiaki me te mahi o te mea, me te taea o te huri i te hononga i roto i te kaupapa rerekē. Gripe i runga i tenei hua ko e wātea ana i roto i te tikanga i puta te whānui me te supply ngaohiko hoki ia iti ture rohe.

I te mutunga o

Ko pai hoki te hoahoa o kai mana ohie, tae atu ki ngā wae, me ngā wāhanga e manawapa mo taputapu hiko, rite rawa ki te momo o ngā tawhā putanga te whakarite stabilizer wāhi momo LM317. Ka taea e tēnei pūrere e he tomu'a me ngaohiko nāianei ranei te whakaritea tohu āhuatanga. Hoki te māmā o te tātaitanga, kei te ā-he stabilizer tātaitai motuhake e āhei ki a koutou te whiriwhiri i te kaupapa tika, me te ki te whakatau i te taea o ka huri.