Me-scale Benchtop Fais Fab Khoom: 4 Cov Kauj Ruam

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

Nov yog cov lus qhia luv rau kev hloov kho lub khoos phis tawj DC lub cib kom ua qhov hloov pauv tau qhov hluav taws xob siv LM317 IC.

Txog kev kos duab, thov google "LM317 cov ntawv teev tseg." Kuv yuav tsuas yog piav qhia cov txheej txheem tsim hauv cov ntsiab lus dav dav.

Kauj Ruam 1: Mini Benchtop Power Supply

Cov lus qhia no hloov kho lub laptop DC cib kom ua rau cov nplais, cov khoom noj khoom haus zoo rau lub zog rau txhua qhov koj cov phiaj xwm tsis muaj zog.

Nws muaj ib thru-tso, thiab ob, ntawm nws tus kheej kho qhov hluav taws xob tso tawm. Lub Circuit Court siv LM317 rau txhua qhov kev hloov kho tau. Qhov zoo tshaj plaws, nws tawm los ntawm lub khob cij fais fab mov! Koj yuav xav tau lub multimeter txhawm rau txhawm rau kho qhov hluav taws xob kom raug. Tab sis koj twb muaj lawm, tsis yog? Koj tuaj yeem pom kuv "cwj mem" multimeter dai tom qab.

Kauj Ruam 2: Yam Koj Xav Tau:

Qee yam uas koj yuav xav tau yog

1) Khoos phis tawj siv hluav taws xob, lossis lwm yam tsim nyog "fais fab cib." Qhov kuv tau siv yog qhov kev tswj hwm 12V 1.25A lub zog hluav taws xob uas yog thawj lub xov tooj VOIP. 2) Ob peb ntawm LM317 IC's. 3) cov neeg tawm tsam, lub kaus mom, thiab lub lauj kaub/lub tshuab txiav kom tsim tau LM317 Circuit. Vim tias kuv muaj 500R cov tshuab txiav yooj yim, kuv siv 50R rau qhov ruaj khov tiv thaiv. Qhov no muab rau kev hloov pauv los ntawm 1.25V txog li tsuas yog siab dua 12V. Yog tias koj muaj lus nug, sim Google. 4) Ib lub thawv uas tsim nyog.. xws li cov ntaub ntawv zoo uas tau siv los tsev tswb tswb. Txhawm rau ua qhov no MY txoj kev koj tseem yuav xav tau: 1) rab yaj phom! 2) qee lub tshuab ua haujlwm IC ntsaws thiab 26-27 awg cov tub ntxhais hlau xaim 3) lub khob cij fais fab tsheb npav.

Kauj Ruam 3: OK, Nov Yog Ib Txoj Hauv Kev Ua Nws

Ua ntej nruab qhov txuas (xaiv tau):

Kuv muab peb "tus pin machined" IC-lub qhov txuas rau sab xub ntiag thiab ib qho nyob tom qab. Ua ntej, tuav me ntsis ntawm protoboard hla qhov uas koj xav tau lub txuas. Tom qab ntawd kaw nws rau qhov chaw. Tam sim no, siv 1/16 "ntsis, laum ib lub qhov rau txhua tus pin, siv tus tiv thaiv kab ntawv ua cov lus qhia. Tam sim no muab cov kua nplaum kub tso rau ntawm lub qhov. Tom qab ntawd muab cov khoom sib txuas rau hauv. Tom ntej no, koj tuaj yeem tso koj lub lm317's thiab lim lub kaus mom rau hauv. Kuv hotmelt glued lawv rau rooj plaub ua ntej yuav siv lawv nrog cov dhia. *Tsis lees paub - IC's yuav kub thiab tej zaum yuav yaj cov kua nplaum hauv qhov siab. nws yuav yaj yas … tom qab ntawd, dua, Kuv tsis yog tus kws tsim hluav taws xob. Tej zaum koj yuav xav siv lub qhov rooj tiv thaiv rau ntu no. Kuv tau siv protoboard, tooj liab tuaj, tuav kuv lub trimpots. Cov ntaub ntawv ua ntej yuav txuas qhov txuas. Koj kuj tseem tuaj yeem pom tias kuv tso me ntsis ntawm daim kab xev tooj liab ua kab hauv av hauv qab hauv ntej txuas txuas. Yog tias koj tsuas yog siv "thru-put," koj yuav xav tua lawv. Yog li koj tab tom nrhiav dab tsi t yog qhov no … ob lub trimpots kho qhov hluav taws xob ntawm ob LM317's. Qhov txuas rau sab nraub qaum thiab ib qho nyob hauv nruab nrab ntawm lub hauv ntej yog txuas ntxiv nrog txoj kev tsheb nqaj hlau zoo (Qhov no yog vim kuv tau tsim qhov no los ua ib leeg ib leeg tivthaiv-cov tswv yim yuav tsum tau mus rau sab nraub qaum txuas, nrog thru-muab tso rau nruab nrab pem hauv ntej txuas, yog tias koj pom kuv txhais li cas). Cov txuas txuas ib sab ntawm sab xub ntiag txuas nrog LM317 cov khoom siv hluav taws xob. Almsot ua tiav!

Kauj ruam 4: Tiav Kov

Tsis txaus siab, tsis tau, Kuv txiav txim siab siv ib daim khob cij fais fab mov rau cov txiaj ntsig. Nov yog yuav ua li cas:

1) Siv ib qho ntawm cov tsheb npav fais fab tshem tawm 2) Pom nws kom ntev npaum li cas 3) Tshem tawm cov npuas ua thim rov qab 4) Siv lub hau ntswj me me, tuav cov clip los ntawm nraub qaum thiab rub lawv tawm 5) Ntxuav tawm cov clip nrog acetone (kom tshem cov kab xev ua npuas ncauj seem) 6) Koj yuav pom tias txhua kab ntawm 5 qhov hauv paus muaj nws tus kheej qhov clip, tab sis muaj cov hlau me me txuas lawv ua ke. Tshem tawm txhua kab ntawm cov yeeb yaj kiab raws li xav tau. Hauv kuv qhov kev tsim, Kuv tau faib txoj kab hluav taws xob ua peb ntu, ib qho rau txhua qhov tso tawm. Cov av hauv av txuas ntxiv mus. 7) Tam sim no siv me ntsis ntawm 26-27AWG cov tub ntxhais hlau rau txhua qhov clip. Tom qab ntawd koj tuaj yeem txiav me me me me hauv cov yas yas qhov twg cov xov hlau yuav tawm, yog tias koj yog qhov quav. Tom qab ntawd muab cov yeeb yaj kiab tso rov qab. Tshawb xyuas qhov luv. 8) Tam sim no hotmelt kua nplaum lub tsheb npav fais fab. 9) Kaw thiab hle cov hlau lead thiab ntxig ncaj qha rau hauv lub tshuab ua haujlwm tus pin … Ahh, zoo meej haum. 9.5) Huag, qhov xwm txheej koj tsis paub: Ib txoj hauv kev yooj yim los hloov kho lub cim cim lub zog yog los ntawm kev so cov khoom nrog q-ntsis thiab acetone.