Qhov Yuav Tau Txais Cov Khoom Siv Hluav Taws Xob thiab Xaiv LED: 5 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:31

Cov Lus Qhia no yog qhia qhov twg tus kws tsim khoom kho vajtse mus nrhiav qhov chaw. Nws yog npaj rau tib neeg tab tom nrhiav kom nkag mus rau cov khoom siv hluav taws xob raws li kev nyiam ua thiab tsis paub yuav mus qhov twg. Kuv tseem yuav mus dhau qhov piv txwv LED los qhia me ntsis zoo dua qhov kev txiav txim siab uas nkag mus rau hauv LED thaum koj tsis yog yuav lub hnab ntim khoom ntawm radioshack. Kuv sim ua kom pom tseeb, tab sis yog tias kuv muab pov tseg lub sijhawm uas koj tsis paub nrog kuv pom zoo ua wiki tshawb nrhiav. Kuv tsis koom nrog ib lub vev xaib lossis chaw uas kuv yuav teev npe … Lawv yog qhov uas kuv mus thaum kuv xav tau ntu. Tsis tas li kuv nyob ntawm ntug dej hiav txwv Sab Hnub Tuaj ntawm Asmeskas, Cov khw muag khoom nyiam thiab lwm qhov chaw muag khoom muaj nyob hauv lwm thaj chaw ib puag ncig. Kuv paub tseeb tias yuav muaj ntau cov lus tawm tswv yim teev lwm cov peev txheej zoo uas kuv tawm mus thiab tej zaum yuav tsis paub txog … Cov lus teb ntawd zoo heev!

Kauj Ruam 1: Cov Khoom Siv Hluav Taws Xob

Xov tooj cua Shack yog qhov pom tseeb tshaj plaws. Thaum lawv tau txiav lawv qhov kev xaiv, lawv tseem muaj qhov txaus los xaiv los ntawm qhov uas koj tuaj yeem tsim cov kab hluav taws xob yooj yim. Thaum lawv muaj cov cim loj ntawm lawv qhov chaw, koj tuaj yeem taug kev hauv thiab yuav qee yam hauv hnub ntawd es tsis txhob tos ob peb hnub lossis ntau lub lis piam rau koj cov khoom tuaj. mus nrog xov tooj cua. Xov tooj cua Shack yog SORELY tsis muaj IC's uas lawv muaj. Lawv tsis muaj ib qho ntawm qhov rooj logic yooj yim (THIAB, LOSSIS, Inverter, D-Flip Flop) yog li ua txhua yam digital xav tau mus online rau ntu. [Yog tias cov lus no ua rau Xov Tooj Cua Shack cov neeg yuav khoom: Cov no tsis yog tus nqi pheej yig thiab muaj txiaj ntsig ntau rau khaws rau lub hom phiaj kev kawm! Thov cary: 7400 NAND, 7402 NOR, 7404 INVERTER, 7474 DFF. Thov kuj xaj PMOS, IRF9510 kom qhuas IRF510 koj cov khoom lag luam yuav zoo tag nrho] Cov peev txheej hauv online: lawv khaws cov khoom zoo sib xws tab sis muaj qhov sib txawv ntawm cov khoom lag luam. Qee zaum nws yuav siv sijhawm tshawb nrhiav txhua tus ntawm lawv kom pom qee qhov tshwj xeeb uas koj tuaj yeem xaj ib qho ntawm https://avnet.com/ https://digikey.com/, https://www.mouser.com/, http:/ /www.newark.com/, https://www.alliedelec.com/… Koj tuaj yeem tau qhab nia kuaj dawb ncaj qha los ntawm IC tuam txhab yog li nws tsim nyog txheeb xyuas hauv lawv lub vev xaib ua ntej yuav khoom. Rau Cov Khoom Hais Txog Lub Suab: www.parts-express.com/home.cfm

Kauj Ruam 2: Txheeb Xyuas Dab Tsi LED Zoo Rau Koj: Xim

[Ua ntej ib yam twg, feem ntau cov ntsiab lus thiab cov ntsiab lus tau teev tseg hauv lub vev xaib no thiab ntawm wikihttps://en.wikipedia.org/wiki/LED Kev nyeem los ntawm cov no yuav pab (tsawg kawg me ntsis) kom nkag siab txog TXHUA cov ntawv qhia zaub mov uas tuaj los ntawm kev tshawb nrhiav.] Ua ntej tshaj plaws thiab pom tseeb, koj xav tau xim dab tsi? ROYGBIV Txhua yam muaj, feem ntau ntawm RadioShack. ROYG tau nyob ib puag ncig tau ntau caum xyoo lawm. BIV yog kev txhim kho tsis ntev los no. RadioShack yog 10x kim dua feem ntau, tab sis koj tuaj yeem tau hauv koj lub tsheb thiab mus yuav ib hnub twg ntawm ib lub lim tiam thaum lub sijhawm khw. Daim duab yog lub violet LED uas kuv tau yuav los ntawm radioshack. Nws yog "qhib" qhov hluav taws xob yog 3.4v thiab nws qhov siab tshaj plaws/qhov siv tau yog 20mA. Kuv yuav siv lub ntsuab ntsuab los ntawm digikey ua piv txwv. Ntawm txhua lub vev xaib cov khoom siv hluav taws xob siv qhov kev tshawb nrhiav. ntawm digikey.com siv kev tshawb nrhiav kom pom "ntsuab LED" qhov no tshwm sim ntev, muaj peev xwm txaus ntshai, npe … Peb tab tom nrhiav "Tsis Txaus Siab" LED's, Kev txiav txim siab yog lub sijhawm rau sawv ntsug ib leeg cov khoom siv hluav taws xob. Rau lub hom phiaj qhia peb txaus siab rau lub zog qis … Lub zog muaj zog txaus thiab ci ntsa iab thiab yuav ua rau lub roj teeb ploj sai. Yog li los ntawm ntu optoelectronics cia tuaj tos LEDs - <75mA, Kev txiav txim siab (2, 735 yam khoom) Los ntawm qhov no peb xav qhia kom ntsuab (dua) thiab "hla qhov" rau hom qhob cij. Qhov saum npoo yog qhov uas siv rau kev tsim khoom loj. Los ntawm no, tseem muaj 600+ kev xaiv … Tab sis nws tsuas yog siv 1 … mus rau ntu tom ntej ntawm kev xaiv lub zog!

Kauj Ruam 3: Xaiv lub LED: Lub teeb ci/lub zog

Tom ntej, koj xav tau qhov kaj li cas? Kev ci ntsa iab yog lub luag haujlwm ntawm kev ua haujlwm tam sim no (kev siv lub cev ntawm bandgap kev ua haujlwm) en.wikipedia.org/wiki/Candelaen.wikipedia.org/wiki/Luminous_flux Daim duab yog ntawm 2 ntsuab LED nrog tig ntawm kwv yees li 2.5v khiav ntawm 9v muab Ib qho ntawm sab laug tau txais: V/R = I (Vsupply - Vforward)/limit_resistor = Tam sim no (9v -2.5v)/1k = 6.5mA V*I = P (resistor tau siv: 6.5v*6.5mA = 1 /24w) thiab yog kwv yees li 10x (1 qhov kev txiav txim ntawm qhov loj) ci dua li ib qho ntawm sab xis Ib qho ntawm sab xis tau txais: (9v-2.5v) /10k = 0.65mA (resistor tau siv 6.5v*0.65) mA = 1/240w) Qhov no yog qhov uas yuav tsum tau siv lub zog siv.

Yog tias koj nug "vim li cas qhov no thiaj li tseem ceeb?". Yog tias koj lub xaim hluav taws xob txuas rau hauv phab ntsa, 10's ntawm mili-Amps yog qhov tsis tsim nyog. Yog tias koj lub roj teeb muaj roj teeb: Lub roj teeb tau teev tseg hauv amp-teev. Lub roj teeb 9v tuaj yeem muab 300mAh yog tias koj siv 20mA dhau los ntawm koj li, koj lub roj teeb yuav tuag hauv 300/20 = 15hours vs 150hours rau 2mA. Feem ntau, qhov taw qhia teeb yuav tsum tsis yog tus neeg siv khoom tseem ceeb ntawm cov khoom siv tam sim no. Cia peb hais qhia peb qhov ntsuas nyob ntawm qee yam uas yuav siv roj teeb thiab peb xav mus nrog qhov pheej yig 2mA tov. Kev lim dej rau 2mA thiab nrhiav $ 0.09 version muab rau peb 754-1244-ND Raws li koj pom, muaj ntau txoj hauv kev xaiv … tab sis zoo nkauj npaum li ib ntawm lawv yuav ua haujlwm. Muaj ntau ntau cov peev txheej (wiki, cov tuam txhab tsim khoom lub vev xaib) uas yuav nthuav qhia TXHUA qhov tshwj xeeb …

Kauj Ruam 4: Qhov Tseem Ceeb ntawm Cov Ntaub Ntawv (yog Yog Muaj)

Cov ntaub ntawv yog cov ntaub ntawv uas qhia koj txhua yam chaw tsim khoom xav kom koj paub txog ib feem thiab yuav siv nws li cas. Yog li qhov digikey ib feem uas peb tau xaiv muaj cov ntaub ntawv muaj nyob ntawm digikeyhttps://www.us.kingbright.com/images/catalog/SPEC/WP7104LGD.pdf Txhua cov ntaub ntawv hauv cov ntaub ntawv muaj txiaj ntsig rau ntau tus kws tshaj lij. Rau peb lub hom phiaj tam sim, nplooj 3 muaj 2 kab ntawv tseem ceeb uas peb saib xyuas. Cov duab hauv qab no, lawv qhia rau peb txog Tam Sim No rau Kev Teb Cov Lus Teb (IV nkhaus) ntawm Lub Teeb Emitting Diode thiab kev siv zog piv rau tam sim no. Tus tiv thaiv ua raws txoj cai ohms V = IR, lub diode tsis ua. Ib qho diode yuav muaj qhov hluav taws xob ruaj khov hla nws thaum nws qhib. Qhov no yog "qhov hluav taws xob rau pem hauv ntej" tseem hu ua "Qhib rau qhov hluav taws xob". Nov yog qhov uas tam sim no limiting resistor xam ua daim ntawv. (Vsupply - Vforward) / Max tam sim no = Tam sim no txwv tus nqi resistor. Example: 9v roj teeb siv, 1.9v Forward Voltage, Forward Current = 2mA, (9v - 1.9v) /0.002A = 3550ohm resistor. Yog tias ua haujlwm ntawm lossis qis dua qhov kev pom zoo ua haujlwm tam sim no lub cuab yeej yuav nyob ntev ntau xyoo. Nws yog qhov zoo los siv tus nqi mus txog kaum xyoo (10x) loj dua Tam Sim No Txwv Tus Tiv Thaiv Tus Nqi uas cov mis muab rau. Qhov no ua haujlwm rau txhua qhov khoom siv hluav taws xob, Tus nqi tam sim no nyob ruaj khov yog li tus nqi ntawm tus tiv thaiv tsuas yog xav tau nce ntxiv kom cov mis sib npaug. Piv txwv: Yog tias koj xav ntsaws nws rau hauv phab ntsa (tsis pom zoo!) (170v - 1.9 v) /0.002A = 84, 050ohms (84k) TAB SIS: 168.1v X 0.002A = 0.3362W (me ntsis ntau dua 1/3W). Los ntawm qhov resistors tuaj hauv 1/16, 1/8, 1/4, 1/2, 1w, 10w ntau yam. Koj thiaj li ua kom qhov no ua haujlwm yam tsis hlawv lub resistor koj yuav tsum siv 1/2W, 84k Resistor (lossis loj dua) Cov cuab yeej yuav ua haujlwm ntawm cov dej ntws ntau dua, thiab nws yuav ci dua, tab sis nws yuav hlawv tawm! Daim duab ntawm sab xis qhia pom qhov nce ntawm qhov ci ci yog tawm mus rau tam sim no. Yog tias koj xav tau lub teeb ci LED thiab koj xav kom nws kav ntev, yuav ib qho rau qhov ci uas koj xav tau lossis npaj los hloov nws.

Kauj Ruam 5: Txiav Nws thiab Txaus Siab

Txij ntawm no kuv tau taug kev los ntawm cov kauj ruam thiab kev suav uas kuv siv los ua qhov chaw rau kev tsim qauv. Kuv tsis tau qhia yuav tsim dab tsi tshwj xeeb, tab sis TXHUA cov khoom siv hluav taws xob tau tsim nrog cov khoom thaiv. Paub txog kev xaiv thiab qhov twg kom tau txais koj lub tsev thaiv yog cov ntaub ntawv tseem ceeb heev. Los ntawm cov txheej txheem kev kawm uas kuv tau hla qhov kev xaiv ntu no yeej tsis tau npog. Tsis yog internet txaus? Rau cov lus qhia ntxiv thiab txuas mus xyuas: