LM317 chosinthika yang'anira panopa

Atatu osachiritsika chosinthika yang'anira LM317 amapereka panopa katundu 100 MA. linanena bungwe voteji osiyanasiyana ndi 1.2 kuti 37 V. chipangizo ndi zosavuta ntchito ndi sidzatenga awiri resistors kunja kuti kupereka linanena bungwe voteji. Plus, kusakhazikika kwa magawo ntchito ali mungachite bwino kuposa zitsanzo ofanana ndi kuliika kotunga voteji pa linanena bungwe.

mafotokozedwe

LM317 - voteji ndi stabilizer panopa amene amatha ngakhale pamene sakukhudzidwa ulamuliro pini ADJ. Ntchito bwinobwino, chipangizo sayenera kukhala olumikizidwa kwa capacitor zina. Zosiyana amapangidwa pamene chipangizo ndi pa mtunda wautali ku pulayimale magetsi fyuluta. Pankhaniyi, chofunika unsembe wa athandizira kulambalala capacitor.

The linanena bungwe la analogue umathandiza kusintha ntchitoyo panopa yang'anira LM317. Chifukwa, kuonetsa kukhudzika ndi kufupika ripple mtengo wa kuwongola koyefishienti. Zoterezi mulingo woyenera chithunzi zovuta kukwaniritsa pa ena analogues atatu osachiritsika.

Cholinga cha chipangizo pansi kulingalira si m'malo a stabilizers ndi amodzi linanena bungwe chizindikiro, koma chifukwa osiyanasiyana ofunsira. Mwachitsanzo, LM317 panopa yang'anira angagwiritsidwe ntchito ndi madera mkulu-mphamvu. Mu dongosolo ili wagawo munthu anakopa kusiyana pakati athandizira ndi linanena bungwe voteji. Ntchito chipangizo mu mode izi zikhoza mpaka kalekale, mpaka kusiyana mitengo iwiri (athandizira ndi linanena bungwe voteji) alibe olumpha pazipita kololeka mfundo.

Features

Dziwani kuti LM317 panopa yang'anira ndi oyenera yosavuta chosinthika zimachitika chida. Iwo akhoza kugwiritsidwa ntchito ngati stabilizer mwatsatanetsatane, polumikiza amodzi resistor pakati pa zotuluka awiri.

Kujambula sekondale magwero kotunga zikugwira ntchito pa sanali cholimba limadula, kunatheka chifukwa optimizing ndi voteji chizindikiro pa dongosolo kulamulira linanena bungwe. Pulogalamu amam'pangitsa pa khomo osiyanasiyana 1.2 volts, chifukwa ambiri a katundu ndi laling'ono kwambiri. Ndipo panopa yang'anira LM317 voteji transistor analengedwa mu muyezo ndi mafupa 92 akafuna kutentha opaleshoni kuyambira -25 digiri +125 Celsius.

makhalidwe a

Ankaona chida mwangwiro yosayenera kamangidwe ka midadada yosavuta amapereka malamulo mphamvu. magawo akhoza kukhala ndi anadzudzulidwa mawu a katunduyo.

Utsogoleri panopa pa stabilizer LM317 ali ndi makhalidwe awa:

• Linanena bungwe voteji osiyanasiyana - kuchokera volts 1.2 kuti 37.
• Katundu panopa kuti pazipita wa - 1.5 A.
• Pali chitetezo madera yochepa.
• Pali lama fuyusi dera ku kutenthedwa.
• Kulakwa pa voteji linanena bungwe si oposa 0.1%.
• The nyumba IC Chip - mtundu ndi 220, ndi 3 kapena D2PAK.

Galimoto stabilizer zatsopano LM317

Nthawi chipangizo mu funso ntchito katundu LED mphamvu. Komanso ndipo lili ndi dera yosavuta imene resistor ndi Chip ndi adamulowetsa.

Pa athandizira mphamvu zoyendetsera voteji umaperekedwa, ndi kukhudzana waukulu chikugwirizana ndi linanena bungwe analogi ntchito resistor. Komanso, loitanirana amapezeka ndi anode wa anatsogolera. Wotchuka kwambiri panopa dera LM317 stabilizer ngati kuti tafotokozazi, amagwiritsa chilinganizo zotsatirazi: R = 1/25 / I. Kumene ine - ndi chipangizo linanena bungwe panopa, osiyanasiyana ake zimasiyanasiyana pakati pa 0, 01-1.5 A. Resistor zomasulidwa zamitundu 0, 8-120 ohms. Ankakhala moyo wotayirira mphamvu resistor kuchita masamu mfundo: R = IxR (2).

mfundo kupeza anamaliza. Atathana resistors opangidwa ndi yaing'ono kufala kukana komaliza. Izi zimakhudza chiphaso cha zizindikiro malipiro. Pofuna kuthetsa vutoli, mu chiwembu, ndi zina ofunika resistor chofunika mphamvu.

Ubwino ndi kuipa

Khalani limasonyeza kuti ntchito mphamvu ya resistor ndi bwino kuwonjezera kukula kupezeka pa 30%, ndi otsika convection chipinda - pa 50%. Kupatula m'njira zambiri, LM317 LED yang'anira panopa ali ndi zovuta pang'ono. Pakati pawo:

• Small dzuwa.
• Kufunika kuchotsa kutentha kwa dongosolo.
• AC olimba pa 20% ya mtengo malire.

Pewani mavuto ntchito chipangizo ntchito kusintha owongolera.

Dziwani kuti ngati mukufuna kulumikiza ndi mkulu-mphamvu LED wagawo mphamvu milliamps 700 chofunika kuwerengera phindu chilinganizo: R = 1, 25/0, 7 = 1.78 ohms. Mphamvu madyaidya ndikuledzera adzakhala ankalemekeza 0, 88 Watts.

kugwirizana

Yowerengera LM317 yang'anira panopa zochokera njira zosiyanasiyana mogwirizana. M'munsimu muli njira yakuti:

1. Ngati inu ntchito mitundu mphamvu transistor Q1 mukhoza popanda heatsink yaying'ono linanena bungwe panopa 100 MA. Chakwanira kulamulira transistor. Pamene khoka wapulumuka kwambiri woyang'anira D1 ndi D2 ntchito diodes choteteza kufanana electrolytic capacitor ali ntchito kuchepetsa phokoso lambiri. Pamene ntchito transistor Q1, pazipita linanena bungwe mphamvu chipangizo 125 Watts.
2. Panagona wina amapereka zochepa kotunga panopa ndi ntchito khola la LEDs. dalaivala Special limakupatsani zopangira zinthu za mphamvu kuchokera 0, 2 Watts kuti volts 25.
3. Panagona wina ntchito voteji kutsitsa thiransifoma kwa maukonde variable kuchokera 220 Watts kuti 25 Watts. Ndi thandizo la diode mlatho AC voteji adziwonetsa muyeso mpaka kalekale. Komanso, zolakwa zonse ankawachotsera chifukwa mtundu capacitor C1 yomwe imapereka ntchito khola la yang'anira voteji.
4. Zotsatirazi Kulumikizana chithunzi ndi mmodzi wa zovuta. The voteji amaperekedwa ku sekondale kumulowetsa wa thiransifoma pa volts 24, ndi kudzatha ankadutsa sefa ndipo analandira mwa mlingo issuance zonse 80 volts. Izi amapewa choposa pazipita kotunga voteji pakhomo.

Dziwani kuti batire naupereka ophweka akhoza anasonkhana pa maziko a Chip pansi kulingalira chipangizo. Konzekerani ndi muyezo liniya yang'anira ndi chosinthika linanena bungwe voteji chizindikiro. Mu ntchito zofanana liziyenda chipangizo microassembly.

analogs

Wamphamvu stabilizer LM317 angapo a analogues m'misika zoweta ndi achilendo. Yotchuka kwambiri iwo ndi zopangidwa zotsatirazi:

• M'banja kusinthidwa KR142 ndi KR115 EN12 EN1.
• GL317 chitsanzo.
• Kusiyana SG31 ndi SG317.
• UC317T.
• ECG1900.
• SP900.
• LM31MDT.

Reviews

Mogwirizana ndi mayankho ochokera owerenga, ndi malipoti yang'anira uzigwirizana ndi ntchito zake. Makamaka pankhani loitanirana ndi zinthu anatsogozedwa, ndi voteji 50 volts. Zimatithandiza yokonza ndi ntchito chida kuli kotheka kusintha kulumikizana mu ziwembu zosiyana. Icho chinawawawa pa mankhwala alipo m'lingaliro kuti uthunthu ndi kupereka voteji linapereka malangizo iye zochepa malire.

Kumapeto kwa

Chosinthika stabilizer yofunika mtundu LM317 ndi abwino kwa kamangidwe ka katundu yosavuta mphamvu, kuphatikizapo zigawo ndi zida zosinthira kwa zipangizo zamagetsi, zida ndi zosiyanasiyana magawo linanena bungwe. chipangizo Zimenezi zingakhale anakonzeratu panopa ndi voteji kapena malamulo anasonyeza makhalidwe. Chifukwa chomasuka mawerengedwe, Buku lili wapadera Chiwerengero stabilizer limakupatsani kusankha chiwembu bwino ndi kudziwa kuti n'zotheka kusinthasintha.