Txhim kho SMD 7805 PCB tus tswj hwm: 9 Cov Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:24

nyob zoo thiab txais tos rau lwm qhov yooj yim tab sis muaj txiaj ntsig qhia

Koj puas xav tias yuav tsum sim ua kom zoo dua cov khoom SMD, lossis tej zaum los tsim lub PCB me me rau 78XX tus tswj hluav taws xob?

Tsis hais ntxiv …

Kuv yuav qhia koj yuav ua li cas thiaj ua tau ib lub PCB mini nrog lub cim coj zoo nkauj, cia peb pib ua

Kauj Ruam 1: Cov Khoom Qhia

Cov cheebtsam uas pom ntawm no tuaj yeem rov ua dua los ntawm ib qho PCB nrog SMD tivthaiv, txhua yam tuaj yeem khaws tau los ntawm cov khib nyiab hluav taws xob, yog tias koj muaj nyiaj koj tuaj yeem yuav nws los ntawm Radioshack lossis Tandy hluav taws xob.

1x Sijhawm Pub Dawb (ze li 20 feeb):)

1x DIGITAL MULTIMETER

1x 5X5 CM PCB KOOB PLATED (Ib Sab)

1X SOLDER WRAP LOSSIS DUNOLDER GUN RAU QUIT EXCESS SOLDER (YUAV TSUM NYOB HAUV CASE)

1X 7805 VOLTAGE REGULATOR IN A D^2 PAK PACKAGE

1X 1K SMD RESISTOR PACKAGE (0603)

1X 0.33 uF SMD CERAMIC CAPACITOR PACKAGE (1210)

1X 0.1uF SMD CERAMIC CAPACITOR PACKAGE (1210)

1X 1n4007 SMD DIODE PACKAGE (M7 LOS YOG HT M7 LABELED)

1X SMD LED PACKAGE (1206)

1X 2 PIN TERMINAL BLOCK (SCREW HYPE) (THT)

QHOV TSEEB:

SOLDER, 25W lossis tsawg dua cov hlau txuas thiab thiab txhuam hniav me ntsis rau kev ntxuav:)

Kauj Ruam 2: DOWNLOAD THIAB ETCHING TINY PCB

Koj tuaj yeem rub tawm txhua cov ntaub ntawv los ntawm kuv qhov dropbox txuas:

www.dropbox.com/s/eoso39insn8sf5j/MICRO%20…

lossis tsuas yog nyem rau hauv cov ntawv PDF txuas rau theem no:)

Kauj Ruam 3: CIRCUIT SCHEMATIC

Cov txheej txheem yog qhov yooj yim tiag tiag, thiab yog koj tuaj yeem rub tawm de LM7805 Cov Ntawv Teev Npe kom pom cov khoom pom zoo rau hauv Circuit Court

C1 = 0.33uF ntawm cov tswv yim ntawm tus tswj qhov hluav taws xob (tus pin 1) pab muab kev ruaj ntseg rau qhov kev hloov pauv tam sim no thiab qhov hluav taws xob nce siab los ntawm cov tswv yim.

C2 = 0.1uF ntawm qhov tso tawm qhov ntsuas hluav taws xob (tus pin3) pab pab kom muaj kev ruaj ntseg rau qhov kev hloov pauv tam sim no thiab qhov hluav taws xob nce siab los ntawm cov zis.

C1 & C2 raug pom zoo los ntawm cov khw (ST, Ti, thiab lwm yam).

D1 = 1N4007 pab tiv thaiv tus tswj qhov hluav taws xob los ntawm kev rov qab tsis ncaj ncees thiab luv Circuit Court txhob txwm lossis tsis nyob ntawm qhov tso tawm los ntawm tus kheej tswj qhov ntsuas hluav taws xob, muab lub neej ntev rau tus tswj hwm.

cov davhlau ya nyob twg yuav tsum tau sau rau txhawm rau txheeb xyuas GND VCC IN THIAB +5V:)

Kauj Ruam 4: Muag 7805 VOLTAGE REGULATOR THIAB 1N4007 DIODE

- Nias tus tswj hwm mus rau lub pcb huv thiab tuav nws nrog tus nab kuab clip lossis qee yam zoo li ntawd

-Kev thov me ntsis ntawm cov laug rau ib tus pin thiab cia kom qhuav

-Tam sim no lwm tus pin

TSEEM CEEB:

*txheeb xyuas qhov tseeb ntawm qhov diode (anode lossis qhov zoo yuav tsum txuas nrog tus pin3 (qhov tso tawm ntawm qhov ntsuas hluav taws xob), koj tuaj yeem indentify cathode los ntawm cov diode me me (tau sau nrog me ntsis sawb ntawm sab) lossis koj tuaj yeem siv multimeter hauv qhov ntsuas diode thiab nyeem txog 0.7 Volts rau pem hauv ntej thiab 0 lossis tsis muaj qhov ntxeev rov qab.

Kauj Ruam 5: Muag CAPS

Tam sim no nws tau tig mus rau qhov muag me me cov khoom siv hluav taws xob me me, nws tsis muaj qhov sib txawv.

Yog li koj tsuas tuaj yeem txheeb xyuas qhov ua kom raug thiab tsis muaj luv luv ntawm cov ciav hlau, Kuv yeej xav kom koj muab ib sab los yog ncoo los ntawm ib lub hau, cia lub tshuab ziab khaub ncaws kom qhuav thiab txhawm rau lwm sab lossis ncoo. cov txheej txheem no yog nrog ob lub kaus mom thiab yuav tsum tau ntsuas nrog lub ntsuas qhov ntsuas hauv qhov txuas txuas mus nrhiav qee qhov ua yuam kev (nws yuav tsum tsis txuas ntxiv ntawm cov pins los ntawm ob lub capacitors.

Kauj Ruam 6: Muag SMD 1K RESISTOR

-Txhais qhov chaw tiv thaiv raws li qhia hauv daim duab saum toj no.

-Tam sim no yog tias koj xav tias cov laug ntau dhau koj tuaj yeem txiav tawm me ntsis nrog cov xaim desolder.

-Kev sim siv ib lub ncoo los ntawm smd resistor, cia kom qhuav, thiab txhuam lwm lub ncoo, yog tias koj xav tias cov khoom siv tsis raug raws li qhov xav tau, siv sijhawm me ntsis cov hlau txhuam kom zoo zoo rau ob sab ntawm tus tiv thaiv thiab sim ua kom zoo yog lawm:)

Kauj Ruam 7: Muag SMD LED thiab TERMINAL Blocks

Ua ntej tshaj plaws, yog tias koj tsis muaj qhov muag zoo, sim qhov no:

-Kev siv lub multimeter DMM rau hauv qhov ntsuas diode

-Tau cov lus qhia raws li tau hais hauv daim duab saum toj no, ib sab thiab tshawb xyuas seb qhov twg yog qhov pom kev coj los qhib.

-Mark lossis daim ntawv lo rau qhov zoo lossis tsis zoo thiab nco nws ua ntej soldering:)

-Siv me ntsis laum txhawm rau txhawm rau txhawm rau 2 lub dav hlau thaiv rau PCB (txheeb xyuas qhov zoo thiab tsis zoo ntawm ob sab)

TSEEM CEEB:

*Ua ntej txuas DC> 5V lub hwj chim muab tshuaj xyuas txhua txoj kab thiab cov diode, kom ntseeg tau tias txhua yam nws ua haujlwm.

Kauj Ruam 8: Muag GND (GROUND)

-Txhua tsuas yog siv tus lej me me ntawm cov hlau thiab cov dej ntws los yog cov tshuaj txhuam kom yaj rau gnd ntawm pcb thiab tus tswj hwm

CEEV FAJ: Tsis txhob ua ntau lub sijhawm no (> 10 seg) vim tias koj tuaj yeem ua rau tus tswj hwm hluav taws xob puas.

Kauj Ruam 9: KAWG KEEB KWM

-Thaum koj ua tiav lub sijhawm siv tshuaj txhuam, ntxuav lub voj voog nrog txhuam hniav me ntsis thiab qee cov xab npum thiab tso kom qhuav tas.

-Connect cov tswv yim rau thiab tswj tsis tau DC voltage (> 5.5 V) thiab tau txais qhov zoo nkauj 5.00 Volts tswj, ua ntej thiab pom PCB.

Ua tsaug rau pom kuv cov lus qhia, kuv yeej aprecciate nws, pom koj lub sijhawm tom ntej:)