USB Plugbulb: 9 Kauj Ruam (nrog Duab)

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:28

Hauv Cov Lus Qhia no kuv yuav qhia koj yuav ua li cas kom ci ntsa iab, USB siv LED nrog cov ntawv cog lus me me, uas kuv tau muaj lub npe hlub, "Lub Plugbulb".

Qhov me me no tuaj yeem txuas rau hauv ib lub USB nkaus. Zoo rau tig koj lub txhab nyiaj hluav taws xob nqa mus rau hauv lub hwj chim, lub teeb nyem ntev!

Kauj ruam 1: Cov khoom xyaw

Cia peb pib nrog cov ntaub ntawv. Ib lub Plugbulb xav tau:

• USB ntsaws (nyiam dua los ntawm kab tawg)
• 3W LED teeb
• LED tso cua sov
• 2 diodes, ntawm ntau yam tsis muaj lub teeb pom kev zoo (txhua yam yuav tsum ua) LOS YOG 5ohm, 1/2W resistor
• koj lub raj mis yas uas koj nyiam tshaj plaws (ntawm no yog kuv li)
• 1/2 pob ntawm Sugru (lossis zoo sib xws)
• me me, itty-bitty tus nqi ntawm cov cua sov sib xyaw

Nrog rau cov cuab yeej hauv qab no:

• soldering hlau thiab solder
• kub kua nplaum phom
• pliers
• ntiv tes

Xav tias dawb los ntsuas koj daim ntawv qhia raws li xav tau rau ntau pawg ntawm Plugbulb.

Kauj ruam 2: Tear Apart That USB Connector

Ua tib zoo khaws tsawg kawg ob peb ntiv tes ntawm cov xov hlau. Kuv pom tias cov pliers ua haujlwm zoo rau tev tawm cov yas. Nws yuav yog nyob ntawm seb hom yas puag ncig koj lub xov tooj. Nws kuj yog lub tswv yim zoo los siv ib qho nrog cov kab hluav taws xob tawm los ntawm sab nraum qab ntawm lub ntsaws, tsis zoo li sab.

Kauj Ruam 3: Ua LED Circuit, Tshooj Ib

Nov yog cov txheej txheem. Kuv tab tom dhia mus rau qee qhov kev xav rau cov uas xav paub nkag siab yuav ua li cas tsim qauv nrog lub zog LEDs. Rau cov neeg uas tsuas yog xav kom ua tiav nrog txoj haujlwm yog li koj tuaj yeem pib dig muag koj cov phooj ywg nrog koj lub teeb nyem tshiab txias, xav tias yuav hla mus rau qib tom ntej.

Diodes tuaj yeem nyuaj rau tsim nrog thaum xub thawj vim tias lawv yog cov khoom siv tsis yog kab tawm. Qhov no txhais tau tias qhov hluav taws xob thiab qhov tam sim no tsis yog linearly proportional zoo li lawv nyob hauv resistors. Thawj daim duab saum toj no, tau txais txiaj ntsig los ntawm https://www.allaboutcircuits.com/textbook/semicon…, qhia pom qhov nkhaus IV raug, lossis kev sib raug zoo ntawm tam sim no thiab qhov hluav taws xob, rau diode.

LEDs yog diodes tshwj xeeb uas tau tsim los tso tawm qee qhov nthwv dej ntawm lub teeb. Lub zog loj LEDs uas peb yuav ua haujlwm nrog yuav muaj cov nkhaus zoo ib yam li saum toj no, tshwj tsis yog nrog txoj kab nqes uas nthuav dav nthuav dav mus rau kab rov tav (khoov sab saud tau hloov mus rau qhov siab dua). Cov duab thib ob saum toj no yog nkhaus kuv tau ua nrog cov ntaub ntawv kuv tau sau thaum tshawb xyuas cov yam ntxwv ntawm 3W LEDs kuv tau siv hauv txoj haujlwm no (tib yam kuv tau txuas rau, tab sis kuv yuav kwv yees tias txhua 3W dawb LEDs yuav zoo li zoo sib xws).

Los ntawm kuv qhov kev sim, kuv pom tias ntawm 200 txog 500 mA zoo li muab qhov sib npaug zoo tshaj plaws ntawm qhov ci ci thiab siv hluav taws xob. Tshaj li 500, qhov ci ntsa iab tau txais tsawg heev raws li qhov nce tam sim no. Hauv qab 200, LED tsis ze li ci li nws tuaj yeem ua tau. Yog li yooj yim txaus. Yog tias peb xav kom dhau qhov muab tam sim no, txhua yam peb yuav tsum tau ua yog ua raws txoj kab nkhaus thiab pom qhov hluav taws xob nws sib xws. Yog tias kuv tab tom ua qhov no nrog qhov hloov pauv tau qhov hluav taws xob, thiab tuaj yeem hu rau qhov tshwj xeeb qhov hluav taws xob, nws yuav yog qhov yooj yim.

Qhov ua kom yuam kev los txog thaum koj xav tau lub zog los ntawm qhov chaw uas tsis muaj qhov hluav taws xob raug. Hauv txoj haujlwm no, peb xav kom lub zog LED los ntawm 5 volts. Yog tias peb txuas lub LED ncaj mus rau 5 volts, peb yuav tso ntau dhau tam sim no los ntawm nws thiab nws yuav hlawv ib pliag. Yog li peb yuav txwv tam sim no li cas?

Peb muaj ntau txoj kev xaiv. Peb tuaj yeem siv qhov ntsuas hluav taws xob lossis tus tswj hwm IC tam sim no, thiab qee qhov yuav sib cav qhov no yog txoj hauv kev zoo tshaj los mus ua txoj haujlwm no. Txawm li cas los xij, qhov loj me yog qhov txwv hauv txoj haujlwm no, yog li peb xav tau qee yam me me. Hmoov zoo, txij li peb tab tom ua lub zog tawm ntawm qhov ruaj khov, tswj 5 qhov hluav taws xob qhov chaw (raws li USB cov khoom siv feem ntau yog), peb tuaj yeem siv cov diodes thiab/lossis cov neeg tiv thaiv kom hone nyob rau tam sim no/qhov hluav taws xob peb xav tau.

Kuv yuav piav qhia yuav ua li cas kom raug xaiv cov tshuaj tiv thaiv ua ntej, txawm hais tias kuv tau xaiv los siv cov txheej txheem diode hauv kuv qhov kev tsim. Txhawm rau ntsuas qhov ntsuas qhov tseeb peb yuav siv qhov tam sim no peb xav tau, cia peb hais 300mA, thiab qhov hluav taws xob tus tiv thaiv yuav pom, 5V-VLED, qhov twg VLED yog qhov ntsuas hluav taws xob hla LED ntawm 300mA (siv peb daim duab) thiab siv txoj cai ohms (V /I = R) xam. Hauv kab ntawv peb tuaj yeem pom tias ntawm 300mA LED poob qis txog 3.25V. Yog li peb cov resistor yuav poob 5-3.25 = 1.75V. Siv txoj cai ohms, peb tus tiv thaiv yuav tsum yog 1.75V/300mA = 5.83 ohms.

Yog tias koj tsis muaj qhov nkhaus IV zoo rau koj lub LED, koj tuaj yeem ib txwm siv rau kev ua lej, txawm li cas los xij nws tsis zoo nkauj. Cov duab kawg kuv txuas rau cov kauj ruam no yog qhov sib npaug rau qhov nkhaus IV ntawm diode. Peb tuaj yeem ua ke qhov sib npaug no nrog ohms txoj cai rau tus tiv thaiv (V = IR) thiab daws rau R (yog tias koj paub LED's saturation tam sim no). Peb paub tias kuv yog sib npaug thiab V yuav tsum ntxiv rau 5. Ob qhov sib npaug, ob qhov tsis paub. Tab sis tag nrho … txoj cai?

Zaj dab neeg luv luv, tus tiv thaiv txog 5 ohms yuav ua qhov dag. Koj kuj tseem yuav tsum siv lub zog tawm mus rau kev txiav txim siab, txawm hais tias. 5ohms ntawm 300mA yuav tawg.3^2*5 =.45W ntawm cua sov, yog li peb xav tau 1/2W resistor. 5ohms yog qhov ua tau txawv txav me me, txawm li cas los xij peb tuaj yeem ua qhov no nrog ntau dua muaj cov neeg tawm tsam nyob rau hauv ib txhij, xws li ob 10ohm resistors, lossis plaub 20ohm resistors. Yog tias koj ua txoj hauv kev no, xyuas kom tseeb tias koj cov resistors yog 1/4W lossis, zoo dua, txawm tias loj dua los ntawm kev lees paub lub zog tso tawm, txwv tsis pub lawv yuav kub dhau thiab dhau los ua qhov txaus ntshai.

Lwm qhov kev xaiv yog siv diodes kom poob qhov hluav taws xob. Ib tus qauv diode tau hais kom poob.7 volts, txawm li cas los xij, qhov no tsis nruj me ntsis. Nws yuav poob me ntsis ntxiv ntawm cov dej ntws siab dua, thiab tsawg dua me ntsis ntawm cov dej ntws qis. Qhov no txhais tau tias ob lub diodes hauv koob yuav poob qee qhov ib puag ncig 1.4V. Hauv peb qhov kev sib tw, qhov no yuav tawm 3.6V rau peb cov LED, uas yuav tsum dhau qhov chaw ib puag ncig 500mA raws li peb daim duab. Thaum qhov no siab me ntsis, nws nyob hauv thaj tsam kuv tab tom nrhiav, thiab ntxiv qhov thib peb diode hauv koob yuav poob qhov hluav taws xob qis dhau (~ 2.9V). Tsis tas li, thaum hla qhov tam sim no ntau dhau los ntawm diodes, nws zoo li qhov poob qis yuav ntau dua.7, yog li cov kab ke yuav pom qhov sib npaug ntawm qhov qis dua tam sim no. Ib zaug ntxiv, qhov no tuaj yeem daws teeb meem ntau dua nrog lej yog tias koj muaj txhua yam ntawm cov ntsiab lus ntawm diodes, tab sis kuv tau siv txoj hauv kev yooj yim dua - tus ntsuas hluav taws xob kho tau. Kuv nyuam qhuav ntxiv ob daim diode (vim tias qhov no yog kuv tus qhua) thiab maj mam nce qhov hluav taws xob thaum ntsuas qhov tam sim no. Los ntawm lub sijhawm kuv tau mus rau 5 volts nws tau rub qhov chaw ib puag ncig 400mA. Zoo meej.

Yog tias koj siv cov diode sib txawv thiab ob qho tsis ua haujlwm, koj tuaj yeem ntxiv lossis rho tawm diodes lossis txawm sim diodes sib txawv nrog qhov sib txawv ntawm qhov poob qis. Lossis koj tuaj yeem siv cov tshuaj tiv thaiv yog tias koj muaj qhov raug cai dag ib puag ncig. Kuv tsis tuaj yeem xav txog ib qho laj thawj vim li cas ib txoj hauv kev yuav zoo dua li lwm qhov, tab sis yog tias koj tuaj yeem ua tau kuv yuav nyiam kawm txog nws hauv cov lus.

Ib daim ntawv ntxiv rau cov uas ua si nrog lub zog loj LEDs: Cov dej tso dej yog lub cua sov zoo! Thaum kuv tau sim cov kev txwv ntawm cov LEDs no, Kuv tau ua kom lawv nyob hauv cov dej distilled. Dej distilled yog cov rwb thaiv tsev (zoo, zoo ib yam li tus neeg ua haujlwm tsis muaj zog heev) yog li nws muaj kev nyab xeeb rau hluav taws xob. TSIS TXHOB siv cov kais dej, vim cov ntxhia yaj yog cov uas ua rau nws ua tau zoo. Raws li ib txwm, siv kev nkag siab zoo thiab ceev faj, tab sis qhov no tuaj yeem yog qhov ua kom yuam kev.

Kauj Ruam 4: Ua LED Circuit, Tshooj Ob

Tam sim no nws yog lub sijhawm los ua ke ua ke cov hauv paus yooj yim.

Muab ib qho ntawm cov cua sov tso rau hauv nruab nrab ntawm koj lub dab dej kub, tom qab ntawd nias koj lub LED rau nws. Nws yuav pab tuav lub LED nyob hauv qhov chaw thaum koj muab nws tso rau lub rhaub dej kub. Tam sim no ua li ntawd. Solder LED mus rau lub rhaub dej kub.

Tom ntej no, siv cov LED thiab ob lub diodes (lossis koj 5ohm resistor) hauv koob. Nco ntsoov, diodes yog polarized, yog li xyuas kom lawv txhua tus ntsib tib txoj kev, lossis koj lub teeb yuav tsis qhib. Diodes feem ntau muaj cov qhab nyiaj qhia txog sab qis voltage. Xyuas kom lawv txhua tus mus rau hauv Circuit Court nrog cov qhab no nyob ntawm sab ntxiv los ntawm koj li 5V qhov chaw. LED tseem yog lub diode, txhais tau tias nws tseem yog kev coj ua. Nco ntsoov tias koj tau taw tes rau qhov yog. Feem ntau lawv muaj cov cim rau ntawm cov khoom me me. Yog tias koj tsis ua, siv qhov hluav taws xob qis (~ 2-3V, ob lub roj teeb AA hauv koob yuav ua haujlwm) los ntsuas. Koj yuav tsis ua puas rau LED los ntawm kev txuas nws rov qab, nws tsuas yog tsis ua haujlwm.

Kuv ntxiv qee daim kab xev hluav taws xob rau sab nraum qab ntawm lub cua sov, tom qab ntsaws lub diodes tom qab nws. Nws tsis muaj teeb meem dab tsi uas xaj cov khoom no mus rau hauv Circuit Court, tsuav yog lawv txhua tus ntsib qhov raug.

Kauj ruam 5: Txuas Jack

Tam sim no txuas lub USB jack rau hauv Circuit Court. Txhua yam koj xav tau yog lub zog (liab) thiab cov xov tooj sib txuas (dub) los ntawm USB. Koj tuaj yeem txiav lwm tus (tab sis ceev faj kom tsis txhob luv lawv, yog li tsis ua kom puas lub cuab yeej twg koj ntsaws qhov no rau hauv). Sim ua qhov no nrog qhov ua kom qeeb me ntsis ntau li ntau tau hauv cov xov hlau.

Tam sim no siv qee cov kua nplaum kub los tuav nws tag nrho ua ke.

Kauj Ruam 6: Txiav Lub Hau Hauv Lub Raj Dej Cap

Yog, Kuv paub nws yog qhov koj nyiam tshaj, tab sis peb yuav tsum ua qhov no.

Peb yuav tsum ua qhov hlais nyob tom qab ntawm lub raj mis kom lub ntsaws USB tuaj yeem swb dhau. Kuv pom tias kuv tuaj yeem siv lub laum me ntsis txhawm rau txhawm rau txhawm rau ob lub qhov uas nyob ib sab uas yog qhov dav uas raug, thiab tom qab ntawd siv lub tshuab sawing nrog lub laum txuas rau lawv, tsim ib txoj kab. Kuv paub tseeb tias muaj cov txheej txheem zoo dua thiab cov cuab yeej zoo dua, thiab kuv xav kawm paub txog lawv hauv cov lus!

Kauj Ruam 7: Ntxiv Lub raj mis Cap

Tam sim no thawb lub jack los ntawm qhov hlais koj tau ua hauv lub raj mis thiab ntxiv qee cov kua nplaum kub ntau nyob ib puag ncig zoo li tuav nws hauv qhov chaw.

Kauj Ruam 8: Ntxiv Sugru

Siv Sugru los ua lub foob zoo nyob ib ncig ntawm lub jack, thiab zais qhov zoo li. Cov khoom no tseem ua cov kua nplaum, uas yuav ua rau nws ruaj khov dua.

Kauj ruam 9: Txaus siab rau

Saib seb! Lub Plugbulb!

Cov teeb no rub lub zog qis dua lub xov tooj ntawm lub xov tooj, yog li lawv yuav tsum muaj peev xwm siv tau los ntawm tsuas yog ib lub pob USB roj teeb uas koj muaj. Zoo rau teeb pom kev kub ntxhov lossis coj mus pw hav zoov. Nrog lub roj teeb loj, lawv yuav khiav mus rau kaum teev!

Zoo siab ua!