LM317T: simba romugove redunhu rimwe simba inodzorwa

On the Micro-LM317T chinogumbura Mufananidzo simba nerubatsiro (PSU) nyore nguva zhinji. Chekutanga, zvinokwanisika kuti kuchigadzirisa. Chechipiri, kuti Kudzikamiswa simba anobudiswa. Uye nokuda wongororo vakawanda mudzidzi redhiyo dzaishandisa, microassembly ichi nguva kupfuura zvipfuwo dzomuzana. Zvikurukuru, mugove waro yakakura chaizvo, hazvina kuenda chero tichienzanisa chero maatomu akafanana.

Hwaro simba zvitengeswa - transformer

Zvakakodzera kushandisa sezvo voltage convert danho-pasi transformer. Zvinogona kutora iri chero imba midziyo yemagetsi - vanyori, materevhizheni, etc. Zvinogonekawo kushandisa transformers muchiso TCEs-110, vakanga kuiswa iri chikwata puranga kushanda pakuvheneka-chena dema-uye materevhizheni .. Zvisinei, vane goho voltage 9 V uye magetsi rakanyatsojeka diki. Uye kana unofanira simba mukuru-simba mutengi, zviri pachena kwete zvakakwana.

Asi kana uchida kuita PSU simba, zvine musoro kushandisa simba transformers. Kukwanisa kwavo kunofanira kuva zvinenge 40 watts or. Kuti micro LM317T simba romugove nokuda DAC uchida kuti goho voltage ndiyo 3.5-5 V. Zvakakodzera kuramba kunokosha mu ngetani zvokudya pamusoro microcontroller. Zvinogoneka kuti yechipiri ichitenderera kunodiwa kuti zvishoma kuchinja. Primary saka haana rewound, voitakura kunze chete kuputira (kana zvakakodzera).

rectifier rwakazara

Rectifier chikwata - boka iri semiconductor diodes. Hapana hazvina kuoma, zvakakodzera chete kuziva kuti, chii mhando rectification muchida kushandisa. ari rectifier redunhu angava:

• hafu-wave;
• azere-wave;
• zambuko;
• doubling, tripling, voltage.

Last musoro kushandisa kana, Somuenzaniso, goho pamusoro transformer uine 24, uye unofanira kuwana 48 kana 72. Izvi vaizongoguma kuderedza goho ano, zvinofanira kufungwa nezvazvo. Nokuti simba nyore kupa kupfuura rakakodzera rectifier zambuko redunhu. Used microassembly LM317T simba nerubatsiro haasi simba ndicharizivisa. Chikonzero kuti - simba Chip pacharo 2 chete watts or. Bridge redunhu zvakare hakubvisi nokufamba, uye ane kunyatsoshanda kwakakwirira zvikuru (kana zvichienzaniswa hafu-wave redunhu). Akabvumira ari rectifier danho senzira diode magungano uye munhu zvinoriumba.

Housing simba zvitengeswa

Sezvo mashoko dzimba inozviti kushandisa epurasitiki. Zviri nyore kuti dzifunge, amenable kuti deformation panguva kudziyisa. Nemamwe mashoko, unogona kuita nyore chero wechinhu blanks. Uye hazvina kutora nguva yakareba kuchera. Asi zvinokwanisika kushanda zvishoma uye vanoita zvakanaka, akasimba kwedzimba yakagadzirwa papepa aruminiyamu. Chokwadi, naye huchava dzichikunetsa, asi pakaita achava dzinokatyamadza. Mushure kubudisa muviri kubva jira aruminiyamu, rinogona kucheneswa kwazvo, primed uye kushandisa akaturikidzana akawanda pendi uye varnish.

Uyezve, kamwe muchauraya shiri mbiri nedombo rimwe - kuwana muviri wakanaka uye kupa mamwe kutonhora ari micro. On LM317T simba wedzerai kuvakwa maererano nenheyo kuti Kudzikamiswa rinoitwa ne kusunungurwa yakawanda kupisa. Somuenzaniso, une goho pamusoro rectifier 12 V, uye Kudzikamiswa vanofanira kupa 5 V. Ndicho musiyano, 7 Volt anoenda muchidziisa Micro-redzimba. Naizvozvo, inoda yepamusoro kutonhora. Uye aruminiyamu pokugara achabatsirawo kuti ichi. Zvisinei, unogona kuita zvakawanda yepamusoro - akatasva pamusoro redhiyeta tembiricha chinja, izvo zvichaita mafambisirwo kutonhora.

Driving voltage Kudzikamiswa

Saka, une microassembly LM317T, simba wedzerai redunhu pamberi pameso ake, unofanira zvino kuziva chinangwa chacho mhedziso. Yavo ine chete matatu - chiyamuro (2), nzira yokubudisa (3) uye uremu (1). Dzokerai muviri kutarisana pachavo, vaiva kuruboshwe kuenda kurudyi. Ndizvozvo, zvino zvakafanira kuita voltage murau. Uye kuti zvive nyore, kana munhu transformer rectifier chikwata uye vakagadzirira. Sezvaunoziva, kubvisa kuti rectifier iri vaipa kune gungano rokutanga inouraya. With rectifier ndinoiitawo wedzerai voltage kunoitika panguva yechipiri goho. Kubva wechitatu kugadzikana voltage chinobviswa. Pakazoti mazano uye goho vanofanira kuisa electrolytic capacitors inokwana 100 uF uye 1000 uF azvaitwa. Ndizvo zvose, chete panguva mbudo, zviri chinodiwa kurwira kuramba kurwisa (pakati sezvakarayirwa 2 k), izvo zvichaita kuti nokukurumidza electrolytes tiite pashure nokuchinja kubvisa.

Driving simba romugove voltage vachikwanisa kuchinja

Ita kuchinja chikwata pamusoro LM317T simba zviri nyore, hazvina haatarisiri ruzivo chaiyo uye unyanzvi. Saka, watova simba wedzerai pamwe stabilizer. Zvino unogona ndiwedzere nayo zvishoma kuchinja goho voltage, zvichienderana chii zvaunoreva. Zviri zvakakwana kudzima mhedziso yokutanga kubva micro kubvisa simba. Pakazosvika mbudo kutendeukira resistances maviri akatevedzana - kugara (chezita 240 ohms) uye AC (5 ohms). In nzvimbo maererano yavo rinobatanidza chinouraya yokutanga microassembly. Izvi manipulations nyore anonamata chinjika simba rive. Makavigwa kunonyanyisa voltage rinoshandisirwa mazano LM317T, kungava 25 volts.

mamwe Features

Nokushandiswa micro LM317T redunhu simba nerubatsiro hunowedzera dzichipfekeka. Chokwadi, panguva oparesheni simba nerubatsiro, unofanira kuita kudzora pfungwa parameters. Somuenzaniso, mazano ano kana goho voltage (ichi ichokwadi kunyanya nokuda chinjika vematunhu). Saka zviratidzo vanofanira akatasva mberi remadziro. Uyezve, unofanira kuziva rwuripowo kana zvakarukwa simba rive. The vanosungirwa kuzivisa imi vari kuwanikwa muzvinyorwa afoot nani kuronzesa zviri akatungamirira. kuvaka Izvi chaizvo akavimbika, asi simba nokuda inofanira kubatwa rectifier goho, kwete micro.

Kudzora kuitika uye voltage inogona kushandiswa raundi zviratidzi kudzidza akamboona. Asi kana, kana uchida kuita simba nerubatsiro kuchaita kuti usatenda kuti murabhoritari, zvinokwanisika kushandisa LCD anoratidza. Zvisinei, nokuti kuitika uye voltage kuyerwa pamusoro LM317T simba wedzerai redunhu inofambidzana rakaoma nokuti aifanira kushandisa microcontroller uye mutyairi anokosha - the buffer maatomu akafanana. Kunoitawo iwe kuti chokuita mazano-goho chengarava riri controller LCD kuratidza.