AC rau +15V, -15V 1A Hloov pauv thiab 5V 1A Lub Rooj Ncaj Ncees DC Lub Hwjchim Mov: 8 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:25

Lub zog siv hluav taws xob yog khoom siv hluav taws xob uas siv hluav taws xob rau lub zog hluav taws xob. Cov Qauv Fais Fab Khoom no muaj peb lub zog DC lub zog khoom siv. Thawj qhov khoom muab qhov sib txawv ntawm qhov zoo ntawm 1.5 rau 15 volts ntawm txog 1 ampere. Qhov thib ob muab qhov tsis zoo 1.5 rau -15 volts ntawm 1 ampere. Qhov thib peb muaj qhov ruaj khov 5V ntawm 1 ampere. Txhua yam khoom siv tau tswj hwm tag nrho. Ib qho tshwj xeeb Circuit Court IC khaws cov hluav taws xob tso tawm hauv.2V thaum mus los ntawm tsis thauj khoom mus rau 1 ampere. Cov zis raug tiv thaiv tag nrho los ntawm luv Circuit Court. Cov khoom siv no yog qhov zoo tshaj plaws rau siv hauv tsev kawm ntawv lab, cov kev pabcuam hauv khw lossis txhua qhov chaw uas yuav tsum tau muaj qhov ntsuas hluav taws xob DC.

Kauj Ruam 1: Kev Pabcuam Ua Haujlwm Li Cas?

Kev muab khoom muaj ob lub vojvoog, ib qho yog tsau 5v tso tawm thiab lwm qhov yog 0 txog+15, thiab -15 qhov sib txawv muab nrog txhua ntu piav qhia hauv qab no. Nws suav nrog lub zog hloov pauv, theem DC rectifier thiab theem tswj hwm.

1. Nqis nqis 220V AC siv Transformer: Raws li cov tswv yim ntawm cov tswj hwm yuav tsum nyob ib puag ncig txhua qhov ntawm 1.5 txog 40 volts. Yog li 220v AC tau nqis qis siv lub tshuab hloov pauv. 220v AC los ntawm lub ntsiab yog muab rau lub tshuab hloov pauv theem thib ob ntawm fuse thiab hloov, uas ua rau nws nqes mus rau 18 volts. Qhov sib piv ntawm qhov hloov pauv yog 12: 1. Thaum kuaj pom, qhib qhov hluav taws xob hluav taws xob ntawm qhov hloov pauv tau ua 22 volts. Qhov hloov pauv ua haujlwm ob lub hom phiaj. Ua ntej, nws txo 220VAC cov tswv yim rau 17VAC thiab 9VAC kom tso cai qhov hluav taws xob kom raug rau nkag mus rau theem kho qhov muag. Qhov thib ob, nws cais cov khoom siv hluav taws xob los ntawm 220VACline. Qhov no tiv thaiv tus neeg siv los ntawm kev phom sij txaus ntshai, yog tias tus neeg siv yuav tsum sawv hauv qhov chaw hauv av. Lub hauv paus Tapped Transformer muaj ob txoj hlua thib ob uas yog 180 degree tawm ntawm theem.
2. AC rau DC hloov pauv: Rau kev hloov kho ntawm AC (hloov pauv los ntawm AC rau DC), kev teeb tsa choj ntawm diodes tau siv uas txiav tawm qhov tsis zoo ntawm AC thiab hloov nws mus rau dc pulsating. Txhua lub diode ua haujlwm tsuas yog thaum nws nyob rau sab xub ntiag lub xeev (thaum qhov hluav taws xob ntawm anode siab dua qhov hluav taws xob ntawm cathode). Qhov DC no tau muaj qee qhov ripples koom nrog nws yog li lub tshuab hluav taws xob tau siv los ua kom nws du ua ntej xa nws mus rau txoj cai tswj hwm.
3. Kev Tswj Hluav Taws Xob: Tus tswj hwm Circuit hauv PowerSupply muaj LM-317 thiab LM-337 kev sib txuas ua ke. LM317 muab ntau dua 1.5 A ntawm kev thauj khoom tam sim no nrog cov hluav taws xob tso tawm hloov tau ntau dua 1.2 txog 37 V ntau. LM337 series yog kho tau 3 -davhlau ya nyob twg tsis zoo qhov ntsuas hluav taws xob muaj peev xwm muab tau ntau dua -1.5 A dhau ntawm -1.2 txog -37 V tso tawm qhov hluav taws xob ntau. Lawv yog qhov tshwj xeeb tshaj yog siv tau yooj yim thiab xav tau tsuas yog ob lub zog sab nraud los teeb tsa qhov hluav taws xob tso tawm. Ntxiv mus, ob txoj kab thiab kev thauj khoom zoo dua li cov qauv kev tswj hwm ruaj khov. Qhov hluav taws xob tso tawm ntawm LM317/LM377 tau txiav txim siab los ntawm kev sib piv ntawm ob qhov kev tawm tswv yim resistors R1 thiab R2 uas tsim lub peev xwm faib tawm network thoob plaws lub dav hlau tso tawm. "Output" thiab "adjustment" terminal. Txawm li cas los xij tam sim no ntws los ntawm tus tiv thaiv R1 kuj tseem ntws los ntawm tus tiv thaiv R2 (tsis quav ntsej qhov hloov pauv me me tam sim no), nrog cov lej ntawm qhov hluav taws xob poob thoob R1 thiab R2 sib npaug rau qhov tso tawm qhov hluav taws xob, Vout. Pom tseeb qhov ntsuas hluav taws xob nkag, Vin yuav tsum muaj tsawg kawg 2.5 volts ntau dua li qhov yuav tsum tau ua kom muaj hluav taws xob los tswj lub zog.
4. Lim: Cov zis ntawm LM317/337 tau pub rau lub capacitor txhawm rau lim tawm cov txiaj ntsig pulsating. Thiab tom qab ntawd nws tau xa mus rau qhov tsim tawm. Nws yuav tsum tau pom tias lub capacitor polarity yuav tsum tau khaws cia hauv siab ua ntej tso nws.

5v tsau DC khoom

5v DC ua haujlwm ntawm tib lub hauv paus ntsiab lus, tab sis tus tswj hwm siv rau qhov ntawd yog tsau 7805. Kuj tseem siv lub tshuab hluav taws xob yog ntawm 220V txog 9V AC.

Kauj Ruam 2: Daim Duab Circuit Court thiab Cheeb Tsam Yuav Tsum Tau:

Daim duab kos Circuit thiab Cheeb Tsam yuav tsum tau muaj nyob hauv cov duab saum toj no.

Kauj Ruam 3: Simulations thiab Pcb Layout

Proteus Schematic thiab Simulations:

Cov phiaj xwm hluav taws xob tau sim sim txhawm rau txhawm rau pom tias lub Circuit Court ua haujlwm raug thiab ua tiav peb lub hom phiaj ntawm ± 15V sib txawv thiab 5V tsau fais fab tuag. Uas tau txheeb xyuas los ntawm kev ntsuas qhov hluav taws xob tso tawm nrog kev pab ntawm ntau lub ntsuas.

Proteus PCB txheej txheem:

Cov phiaj xwm hluav taws xob tom qab ntsuas tau hloov pauv mus rau nws cov txheej txheem PCB. Cov khoom siv tau muab tso ua ntej thiab txoj kev khiav yog ua tiav los ntawm kev pib tsheb. Lub hwj huam hlau qhov dav yog T80 qhov seem ntawm cov xaim muaj qhov dav T70. Lub rooj ntev tau xaiv los ua 6 los ntawm 8 ntiv tes. Ib txheej txheej 3d kuj tau tshuaj xyuas rau qhov xav tau PCB tsim. Cov txheej txheem ntawm kev ua tiav thiab ntsuas seb txoj kev hla tsis hla yog xa tawm ua PDF. Tsuas yog lub rooj tsavxwm ntug thiab txheej hauv qab tau xaiv los ua PDF daim ntawv thiab tus so tsis raug xaiv. Nws muab rau peb luam tawm ntawm txoj kab ntawm tag nrho PCB.

Kauj Ruam 4: PCB Luam Ntawv

Luam Ntawv ntawm Cov Ntawv Butter:

Txoj kab uas tau txais ua PDF ntawv tau luam tawm ntawm daim ntawv butter. Lub tshuab luam ntawv siv rau lub hom phiaj no yog ib lub toner ntau dua li cov kua kua vim nws tsis tuaj yeem hloov pauv ntawm daim ntawv butter. Rau lub hom phiaj butter ntawv tau txiav kom haum raws li daim ntawv A4 kom yooj yim luam ntawv thiab tom qab ntawv txiav kom haum PCB qhov loj me.

Hloov cov ntawv luam ntawm Butter ntawv mus rau PCB pawg thawj coj:

Cov ntawv butter tau muab tso rau saum PCB pawg thawj coj. Cov hlau kub tau siv los nias cov ntawv butter uas ua rau cov ntawv luam theej nws tus kheej ntawm PCB pawg thawj coj vim cua sov ntawm lub tshuab luam ntawv toner. Tom qab qhov kev taug qab raug kho yog siv tus cim ruaj khov.

Etching:

Hloov cov kab ntawm PCB pawg thawj coj, hauv kauj ruam tom ntej lub rooj tsavxwm tau ntim rau hauv lub thawv ntim nrog Ferric Chloride tso rau hauv lub qhov cub uas ua rau tshem tawm tooj liab los ntawm thoob plaws hauv pawg thawj coj saib PCB tshwj tsis yog cov ntawv uas tau luam tawm ua cov ntawv yas nrog tooj liab tsuas yog muaj nyob ntawm txoj kev khiav.

Drilling:

Tom qab npaj ntawm PCB, lub qhov yog siv cov Pcb laum los ntawm kev ua kom nws nruab nrab los tuav qhov laum ntawm 90 degree mus rau PCB thiab tsis siv qhov siab ntxiv yog tsis li ntawd lub ntsis yuav tawg. Lub qhov rau transistors, txuas, tus tswj Diodes tau ua loj dua li ntawm cov tiv thaiv tsis tu ncua, cov khoom siv hluav taws xob thiab lwm yam

Ntxuav siv Thinner/Petrol:

Lub rooj tsavxwm PCB raug ntxuav nrog ob peb tee ntawm cov kua nplaum lossis cov roj av raws li qhov muaj kom cov number case raug tshem tawm ntawm txoj hauv kev txhawm rau ua kom zoo dua qub ntawm kev tivthaiv ntawm PCB. PCB tau npaj kom muab cov khoom pov tseg pov tseg.

Soldering ntawm cov khoom siv:

Cov khoom siv tom qab ntawd tau muab pov rau ntawm PCB pawg thawj coj raws li txheej txheem Proteus PCB. Lub Cheebtsam tau muag nrog kev ceev faj los ntawm kev tsis ua kom luv lossis cov ntsiab lus. Cov ntsiab lus tsis sib xws ntawm cov khoom siv xws li cov capacitors/transistors tau khaws cia hauv siab. Cov cua sov cua sov tau txuas nrog cov tswj hwm siv cov tshuaj txhuam kom ua kom zoo dua qub thiab muag nrog PCB. Zoo ib yam

Kev Xeem:

Ib zaug zaum kawg, PCB tau sim rau ib qho luv luv thaum siv cov khoom sib txuas ntawm lub rooj tsavxwm. Tom qab ntawd, PCB tau siv zog thiab tso tawm tau sau tseg uas yog raws li qhov xav tau tso tawm. PCB tau npaj txhij muab tso rau hauv lub casing.

Kauj Ruam 5: Kev Npaj Casing

Lub hauv paus txheej txheem nrog txheej txheej yooj yim tau yuav los ntawm lub khw thiab tau hloov kho raws li qhov xav tau. Nws tuaj nrog ob lub qhov rau ob kab ntawv sib dhos, yog li ntxiv ntawm 4 qhov rau khi txoj haujlwm thiab 2 rau cov potentiometers tau raug hlais hauv lub casing. Ib tug poj niam 3 tus pin ntsaws tau muab tso rau ib qho kom yooj yim sib txuas ntawm AC cov khoom siv cable. Ib qho kev hloov pauv kuj tau tso rau sab nraud kom tig lub hwj chim qhib lossis OFF. Ntxiv rau qhov VOLTMETER tau teeb tsa hauv cov khoom kom yooj yim nyeem/xaiv rau tus neeg siv.

Kauj Ruam 6: Teeb Cov Khoom

Cov hloov pauv thiab hloov pauv tau muab tso rau hauv lub casing nrog kev pab ntawm ntoo/insulating ntawv kom tsis txhob muaj luv nrog lub cev. Cov ntsia hlau thiab cov hlua txuas tau siv los tuav cov khoom sib koom ua ke. Txhim kho cov ntawv, fuse tus tuav lub hwj chim thiab khawm tau teeb tsa ntawm lub casing. Jumper xaim tau siv los txuas thiab tau muab xauv kom ruaj ntseg rau kev txuas. shrink qhwv tau siv los tiv thaiv kev sib txuas thiab kom tsis txhob muaj qhov luv. Cov khoom siv tau sim.

Kauj Ruam 7: Thauj Cov Cai

Thauj khoom tau txuas nrog rau cov khoom siv hluav taws xob thiab cov hluav taws xob tso tawm poob tau ntsib uas yog vim qhov poob thoob plaws qhov kev tiv thaiv ntawm cov xov hlau/ pcb lem/ txuas cov ntsiab lus. Yog li txhawm rau ua raws qhov ntawd, qhov tseem ceeb ntawm cov neeg tawm tsam hla LM317/LM337 tau hloov pauv thiaj li muab lub zog thauj khoom ntawm 15 volts. Raws li qhov hluav taws xob uas nyob ntawm qhov tsim tawm tau qhib hluav taws xob hluav taws xob.

Kauj Ruam 8: Kev Xeem Kawg/Kev Soj Ntsuam

Voltmeter siv hauv cov khoom siv tsuas yog ua haujlwm rau qib siab dua 7v (lwm yam tsis muaj nyob hauv khw). Yog li los ntawm kev siv lub ntsuas hluav taws xob zoo dua, qhov ntsuas hluav taws xob qis kuj tseem tuaj yeem ntsuas tau. Nyiam siv qhov ntsuas qhov sib piv ntawm ob lub voltmeter thiab siv qhov hloov pauv hloov tus nqi los ntsuas (+cov khoom siv lossis supplyve qhov hluav taws xob), nws tuaj yeem ua tau ntau dua.

Zuag qhia tag nrho nws yog ib txoj haujlwm nthuav. Ntau yam tau kawm raws li kuv tau paub nrog kev tsim khoom ntawm PCB, teeb meem hauv kev tsim khoom thiab hloov pauv qhov ntsuas hluav taws xob.

Kuj thov mus saib https://easyeeprojects.blogspot.com/ rau cov phiaj xwm yav tom ntej.:)