Un voltage regulator kana voltage regulator kashandisi kadiki kemagetsi kukwanisa kuita kuti voltage irambe iri mudunhu. Inowanzoonekwa muzvinhu zvakaita semagetsi emagetsi uye maadapter emagetsi. Muchiitiko ichi, iyo LM317 idiki inogadziriswa mitsara yemagetsi inodzora yakavharirwa mune nhovo yakafanana nezvatakaona mune nyaya yevanoshandura.
zhinji zvemagetsi kana vagadziri vanowanzo shandisa iyo LM317 kazhinji kune mamwe mapurojekiti kwaunoda kushanda nemhepo yakagadzikana kana uko inoshanduka kubva kune imwe mhando yemagetsi kuenda kune imwe, nezvimwe. Mune zviitiko izvi, iyo isina kugadzikana magetsi chiratidzo kana mhedzisiro pachiratidzo kana uchichinja kubva kuchinjanisa zvazvino kuenda kunongedzera zvazvino haina kukodzera kuendesa yakananga ikozvino maseketi kana isina kumbobatwa nerudzi urwu rwechigadzirwa.
LM317
El LM317 Iyo inozivikanwa kwazvo neinogadziriswa mitsara yemagetsi emagetsi kunze uko. Imwe yevanogadzira zvigadzirwa zvemagetsi zvemagetsi izvi TI (Texas Zvishandiso). Icho chigadzirwa chakapusa, asi chinoshanda kwazvo kumatunhu nekuti inokwanisa kuwana isiri-yenguva dzose magetsi pane yayo yekuisa uye ichipa magetsi mune akawanda akajairika mamiriro pane ayo kuburitsa.
Haisi yekutanga yeanogadziridzwa masiraidhi munhoroondo, muchokwadi iyi ndeimwe yezvazvino mune akateedzana ekuvandudza kune akateedzana maslider. Izvo zvese zvakatanga neLM117, wekutanga pane zvese. Ipapo kwaizouya iyo LM337 yandinotaura nezvayo mundima yekupedzisira yechikamu ichi uye iyo LM317 yaizotevera, iyo yave inozivikanwa kupfuura dzimwe dzese.
Iwe unogona kazhinji kugadzirisa kushungurudzika kwe 1,2 kusvika ku37 volts, ine magetsi e1.5 A. Zvese izvi muhukuru hwakanyanya uye uine matatu chete mapini kana mapini. Imwe yadzo ndeye kuiswa kwakatemwa nemavara IN, imwe kuburitsa kana OUT uye pakupedzisira kumisikidza kana ADJ. Kana isu tikatora iyo LM317 musoro-on, iyo yepakati pini ndiyo inoburitsa. Mativi acho achave ADJ (kuruboshwe) uye IN (kurudyi).
Kana uchitsvaga LM317 mukwanisi, ndiko kuti, mudziyo wekutonga voltage asi kune zvisina kunaka voltages, sezvo iyo LM317 inoshanda chete neyakanaka iwo, ipapo unogona kusarudza iyo LM337. Iyo ingave iri mhinduro kwayo kana iwe uchida kugadzirisa zvisina kunaka voltages.
Unyanzvi ruzivo uye dhatasheet
Iyo LM317 ine akateedzana e hunoshamisa hwokugadzira zvechadenga akadai se:
- Voltage regulator mhando: chinogadziriswa
- Ma voltages: kubva 1.25 kusvika 37v
- Kubuda kwazvino: 1.5 A
- Kuchengetedza kupisa
- nhuri: Iine mhando dzakasiyana dzekupakata, senge SOT-223, TO-220, uye TO-263.
- Voltage shiviriro goho 1%
- La ikozvino kukamurwa hakutsamiri netembiricha
- Kuchengetedza ruzha kuisa (RR = 80dB)
- Inogona kushanda pakakwirira tembiricha, inosvika 125ºC
Iwe unotoziva kuti ese akazara tekinoroji iwe unogona pinda mumasheets yakapihwa nevagadziri. Unogona dhawunorodha iyo PDF yeiyo LM317 kubva kune yepamutemo TI webhusaiti kubva iyi link.
Muenzaniso wekushandisa
heyi kuwanda kwemaseketi anoshanda uchishandisa LM317, asi pamwe chimwe chinonyanya kushamisa paunodzidza zvemagetsi ndipo pavanokudzidzisa mashandisiro emagetsi emagetsi, nekuti mashandiro ese akanaka kwazvo nenzira inoshanda uye yakajeka.
Ndinoda kuti iwe utarise kune chifananidzo chiri muchikamu chino, ndezve dunhu rekutanga remagetsi. Mariri iwe uchaona kuti pane nhevedzano yematanho ayo ini ndiri kuenda zvino kune tsananguro, uye mune yega yega giraidhi yakaiswa inoratidza iyo nzira iyo giraidhi yemagetsi inopfuura neiyo chikamu chedunhu.
- Shanduko: pakutanga tine transformer ine miviri miviri yakanyorwa seN1 neN2. Zvinoitwa neshanduki kushandura magetsi ekuisa, semuenzaniso iyo 220v inochinjisa yazvino yatinayo mupuragi yatinobatanidza magetsi. Uye iyo yakakwira AC voltage inoshandura iyo kuita imwe yakaderera magetsi, zvinoenderana nekushandisa. Semuenzaniso, unogona kushandura iyo 220v kusvika ku12v kuti ishandise chigadzirwa chemagetsi. Iwe unogona kutarisa kuti pane iyo yekuisa Ve iyo inoshandura yakakwira voltage chiratidzo uye pane zvinobuditswa zvemutakuri iwe zvakare une inochinjika yazvino asi ine yakaderera voltage (V1).
- Diode zambuko: ipapo tinoona madhiodhi mana akabatana neimwe nzira. Inozivikanwa sedhayidho redhaidhi uye kuti mwenje unoshanduka we12v unopinda nepabhiriji kuti igadziriswe. Kana isu tikatarisa girafu, isu tabva kune sinusoidal AC chiratidzo kune yakanaka voltage chete macurves, kubvisa yakaipa chikamu.
- Condenser: Iyo capacitor inotsvedzerera kuburitswa kwechiratidzo chebridge, ndokuti, iwo madiki akasvetuka anomiririrwa mugrafu anozonamwa neiyo capacitor's simba uye ipapo iwo magetsi anozoburitsa zvishoma nezvishoma. Mhedzisiro yacho mutsetse nemamwe macurves, asi zvakanyanya kutsetseka. Iri kuve ichiita kunge tambo yakatwasuka, ndokuti, chaiyo yazvino.
- Kudzikamisa: ndiro danho rekupedzisira, uye kunyangwe richidanwa kudaro, iri gadziriro yemagetsi senge iyo LM317. Kuwana chiratidzo chakanyatso gadziriswa paunenge uchienda. Ndokunge, iwo madiki emagetsi anokwakuka ayo akambogadziriswa capacitor kana danho rakapa, izvozvi zvanyatso gadzikiswa uye tambo yakatwasuka. Ndokunge, isu tine voltage inogara iripo ye12v mune yedu kesi. Naizvozvo, ikozvino tinogona kutaura kuti tine yakananga yazvino.
Aya ndiwo marongero anoita magetsi enda kubva AC kusvika DC, senge iyo inogona kuve nePC mukati kana seyajaja mbozhanhare, nezvimwe. Ini ndinofunga ndiwo wainyanya kuratidza muenzaniso kudzidza pamusoro peizvo chaizvo zvinodzorwa nemagetsi, pachinzvimbo chekutsanangura nenzira yehungwaru iyo zvimwe chimwe chinhu chisinganzwisisike uye chakaoma kunzwisisa.
Naizvozvo, mune ese iwayo maseketi umo voltage inoda kudzikamiswa uye gadzirisa zvikanganiso zvidiki zvemasaini, unogona kugara uchishandisa voltage voltage seLM317. Kana iwe uine oscilloscope kana software simulator kumba, iwe unogona kuyedza iwo iwo wedunhu mumufananidzo uye kuita bvunzo munzvimbo dzakasiyana mudunhu kuti uone kuti chiratidzo chinopfuura sei kubva kune imwe nyika kuenda kune imwe.
Ndinovimba posvo iyi ichave yekubatsira kukuru kwauri ... uye iyo LM317 haina zvakavanzika kwauri izvozvi.
Zvakanyatsotsanangurwa zvese. Ndinokutendai zvikuru, ndinofunga ndichaiisa munguva pfupi. kwaziso yakanaka