Tam sim no LED teeb pom kev zoo tau dhau los ua neeg nyiam heev. Qhov zoo tshaj plaws yog tias qhov teeb pom kev zoo no tsis yog tsuas yog muaj zog txaus, tab sis kuj raug nqi. LEDs yog semiconductor diodes hauv lub plhaub epoxy.
Thawj zaug lawv tsis muaj zog thiab kim heev. Tab sis tom qab ntawd, ci dawb thiab xiav diodes tau tso tawm rau hauv ntau lawm. Txog thaum ntawd, lawv cov nqi lag luam tau poob qis. Tam sim no, muaj LEDs ntawm yuav luag txhua xim, uas yog vim li cas rau lawv siv nyob rau hauv ntau yam kev ua ub no. Cov no suav nrog cov teeb pom kev sib txawv, cov ntxaij vab tshaus rov qab thiab cov paib, siv rau ntawm txoj kev kos npe thiab teeb pom kev, nyob rau sab hauv thiab lub taub hau ntawm lub tsheb, hauv xov tooj ntawm tes, thiab lwm yam.
Kev piav qhia
LEDs siv hluav taws xob me me, nrog rau qhov tshwm sim tias cov teeb pom kev zoo li no maj mam hloov cov teeb pom kev ua ntej. Hauv cov khw tshwj xeeb, koj tuaj yeem yuav ntau yam khoom raws li LED teeb pom kev zoo, xws li los ntawm cov teeb pom kev zoo thiab LED sawb,xaus nrog LED panels. Qhov lawv txhua tus muaj qhov sib xws yog tias lawv qhov kev sib txuas yuav tsum muaj tam sim no ntawm 12 lossis 24 V.
Tsis zoo li lwm qhov chaw teeb pom kev zoo uas siv cov cua sov, qhov no siv cov khoom siv hluav taws xob semiconductor uas tsim hluav taws xob kho qhov muag thaum siv tam sim no.
Txhawm rau nkag siab cov tswv yim rau kev txuas LEDs rau 220V network, koj yuav tsum xub hais tias nws tsis tuaj yeem siv ncaj qha los ntawm lub network zoo li no. Yog li ntawd, txhawm rau ua haujlwm nrog LEDs, koj yuav tsum ua raws li qee qhov kev sib txuas ntawm lawv mus rau lub network hluav taws xob siab.
Cov khoom hluav taws xob ntawm LED
Tus yam ntxwv tam sim no-voltage ntawm LED yog txoj kab ntxhab. Ntawd yog, yog tias qhov hluav taws xob nce tsawg tsawg, ces qhov tam sim no yuav nce siab, qhov no yuav ua rau overheating ntawm LED nrog nws cov burnout tom qab. Txhawm rau zam qhov no, koj yuav tsum suav nrog qhov txwv tsis pub muaj nyob hauv Circuit Court.
Tab sis nws yog ib qho tseem ceeb tsis txhob hnov qab txog qhov siab tshaj plaws tso cai rov qab voltage ntawm LEDs ntawm 20 V. Thiab yog tias nws txuas nrog lub network nrog rov qab polarity, nws yuav tau txais qhov amplitude voltage ntawm 315 volts, uas yog, 1.41. lub sij hawm ntau tshaj qhov tam sim no. Qhov tseeb yog tias tam sim no nyob rau hauv 220 volt network yog alternating, thiab nws yuav pib mus rau hauv ib qho kev taw qhia thiab ces rov qab.
txhawm rau tiv thaiv qhov tam sim no los ntawm kev txav mus rau qhov sib txawv, LED hloov hluav taws xob yuav tsum ua raws li hauv qab no: lub diode suav nrog hauv Circuit Court. Nws yuav tsis dhau rov qab voltage. Hauv qhov no, kev sib txuas yuav tsum yog sib npaug.
Lwm lub tswv yim rau kev txuas lub LED rau lub network 220volt yog rau nruab ob LEDs rov qab-rau-rov qab.
Raws li lub zog tseem ceeb nrog lub quenching resistor, qhov no tsis yog qhov kev xaiv zoo tshaj. Vim hais tias tus resistor yuav muab lub zog muaj zog. Piv txwv li, yog tias koj siv 24 kΩ resistor, ces lub zog dissipation yuav yog kwv yees li 3 watts. Thaum lub diode txuas nrog hauv series, lub hwj chim yuav raug halved. Qhov hluav taws xob rov qab hla lub diode yuav tsum yog 400 V. Thaum ob lub teeb hluav taws xob rov qab qhib, koj tuaj yeem tso ob lub watt resistors. Lawv kuj yuav tsum yog ob zaug tsawg dua. Qhov no yog ua tau thaum muaj ob lub crystals ntawm cov xim sib txawv hauv ib rooj plaub. Feem ntau ib qho siv lead ua liab thiab lwm qhov yog ntsuab.
Thaum siv 200 kΩ resistor, tsis tas yuav tsum muaj kev tiv thaiv diode vim tias qhov rov qab tam sim no me me thiab yuav tsis rhuav tshem cov siv lead ua. Lub tswv yim no rau kev txuas LEDs rau lub network muaj ib qho kev rho tawm - qhov me me ntawm lub teeb ci. Nws tuaj yeem siv tau, piv txwv li, los teeb lub chav hloov.
Vim qhov tseeb tias tam sim no hauv lub network hloov pauv, qhov no tsis txhob nkim hluav taws xob rau cua sov cua nrog qhov txwv tsis pub. Lub capacitor ua haujlwm. Tom qab tag nrho, nws dhau qhov hloov pauv tam sim no thiab tsis kub.
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias ob qho tib si ib nrab ntawm lub network yuav tsum dhau los ntawm lub capacitor thiaj li yuav kis tau qhov hloov pauv tam sim no. Thiab txij li thaum LED ua tam sim no tsuas yog nyob rau hauv ib qho kev taw qhia, nws yog ib qho tsim nyog yuav tsum muab lub diode tsis tu ncua (los yog lwm qhov ntxiv LED) nyob rau hauv qhov kev taw qhia.parallel rau LED. Tom qab ntawd nws yuav hla lub sijhawm ib nrab thib ob.
Thaum lub voj voog rau kev sib txuas ntawm LED mus rau 220 volt network raug kaw, qhov hluav taws xob yuav nyob twj ywm ntawm lub capacitor. Qee zaum txawm tias tag nrho amplitude ntawm 315 V. Qhov no hem nrog hluav taws xob poob siab. Txhawm rau zam qhov no, ntxiv rau lub capacitor, nws tseem yuav tsum tau muab cov khoom siv hluav taws xob muaj txiaj ntsig zoo, uas, yog tias txiav tawm ntawm lub network, yuav tso tawm tam sim ntawd lub capacitor. Ib qho me me ntawm cov tam sim no ntws los ntawm tus resistor no thaum lub sijhawm ua haujlwm tsis muaj cua sov.
Tiv thaiv kom tsis txhob muaj kev them nqi hluav taws xob tam sim no thiab ua lub fuse, peb muab cov khoom tiv thaiv qis. Lub capacitor yuav tsum yog tshwj xeeb, uas yog tsim los rau ib tug alternating tam sim no circuits ntawm tsawg kawg yog 250 V, los yog 400 V.
Lub tswv yim LED ua raws li kev teeb tsa ntawm lub teeb pom kev zoo los ntawm ob peb LEDs txuas nrog hauv koob. Piv txwv li, ib lub txee diode txaus.
Vim tias qhov hluav taws xob poob thoob plaws qhov resistor yuav tsawg dua, tag nrho qhov hluav taws xob poob thoob plaws LEDs yuav tsum raug rho tawm ntawm lub zog hluav taws xob.
Nws yog qhov tsim nyog uas lub diode ntsia tau tsim los rau qhov tam sim no zoo ib yam li tam sim no dhau los ntawm LEDs, thiab qhov rov qab voltage yuav tsum sib npaug rau qhov sib npaug ntawm qhov voltages ntawm LEDs. Nws yog qhov zoo tshaj los siv ntau tus lej ntawm LEDs thiab txuas lawv rov qab-rau-rov qab.
Muaj ntau tshaj kaum LEDs hauv ib lub saw. Txhawm rau xam lub capacitor, koj yuav tsum tau rho tawm ntawm qhov amplitude voltage ntawm lub network 315 V qhov suav ntawm qhov voltage poob ntawm LEDs. Yog li ntawd, peb pom tus lej poobvoltage hla lub capacitor.
LED kev twb kev txuas yuam kev
- thawj qhov yuam kev yog thaum koj txuas lub LED yam tsis muaj qhov txwv, ncaj qha mus rau qhov chaw. Hauv qhov no, LED yuav ua tsis tau sai heev, vim tsis muaj kev tswj hwm ntawm qhov tam sim no.
- Qhov yuam kev thib ob yog txuas cov LEDs nruab rau hauv qhov sib npaug mus rau qhov sib txawv. Vim tias muaj qhov tawg ntawm qhov tsis sib xws, qhov ci ntawm LEDs yuav txawv. Tsis tas li ntawd, yog tias ib qho ntawm LEDs tsis ua haujlwm, qhov tam sim no ntawm LED thib ob yuav nce ntxiv, vim tias nws yuav hlawv tawm. Yog li thaum siv ib qho resistor, cov LEDs yuav tsum tau txuas nrog hauv series. Qhov no tso cai rau koj tawm tam sim no tib yam thaum xam cov resistor thiab ntxiv qhov voltages ntawm LEDs.
- Qhov yuam kev thib peb yog thaum LEDs uas tsim los rau cov sib txawv tam sim no tau hloov mus rau hauv cov koob. Qhov no ua rau ib tug ntawm lawv hlawv tsis muaj zog, los yog vice versa - hnav tawm.
- Qhov yuam kev thib plaub yog siv tus resistor uas tsis muaj kev tiv thaiv txaus. Vim li no, tam sim no ntws los ntawm LED yuav loj dhau. Qee lub zog, ntawm qhov overestimated tam sim no voltage, yog hloov mus rau hauv tshav kub, ua rau overheating ntawm cov siv lead ua thiab ib tug tseem ceeb txo nyob rau hauv nws cov kev pab cuam lub neej. Yog vim li cas rau qhov no yog qhov tsis xws luag ntawm crystal lattice. Yog tias qhov hluav taws xob tam sim no nce ntau dua thiab p-n kev sib tshuam heats li, qhov no yuav ua rau txo qis hauv quantum yield. Raws li qhov tshwm simLub ci ci ntawm LED yuav poob thiab cov siv lead ua yuav raug rhuav tshem.
- qhov yuam kev thib tsib yog tig rau ntawm LED ntawm 220V, lub voj voog uas yooj yim heev, thaum tsis muaj kev txwv rov qab voltage. Qhov siab tshaj plaws tso cai rov qab voltage rau feem ntau LEDs yog kwv yees li 2V, thiab qhov rov qab ib nrab-lub voj voog voltage cuam tshuam rau qhov poob qis, uas yog sib npaug rau cov khoom siv hluav taws xob thaum lub LED tawm.
- Qhov thib rau yog vim li cas yog siv cov resistor uas nws lub hwj chim tsis txaus. Qhov no provokes ib tug muaj zog cua sov ntawm lub resistor thiab cov txheej txheem ntawm melting lub rwb thaiv tsev uas kov nws nyob ntawm tej. Tom qab ntawd cov xim pib kub hnyiab thiab nyob rau hauv lub siab kub kev puas tsuaj tshwm sim. Qhov no yog vim tus resistor nkaus xwb dissipates lub hwj chim nws tau tsim los lis.
Tshaj Tawm rau tig rau lub zog LED
Txhawm rau txuas cov LEDs muaj zog, koj yuav tsum siv AC / DC converters uas muaj qhov tso tawm tam sim no ruaj khov. Qhov no yuav tshem tawm qhov xav tau rau ib qho resistor lossis LED tsav IC. Nyob rau tib lub sijhawm, peb tuaj yeem ua tiav kev sib txuas LED yooj yim, siv tau yooj yim thiab txo nqi.
Ua ntej koj qhib lub zog LEDs, xyuas kom tseeb tias lawv txuas nrog lub zog hluav taws xob. Tsis txhob txuas lub kaw lus rau lub zog hluav taws xob uas muaj zog, txwv tsis pub LEDs yuav ua tsis tiav.
5050 LEDs. Cov yam ntxwv. Wiring Diagram
Lub zog qis LEDs kuj suav nrog qhov chaw teeb tsa LEDs (SMD). Feem ntau lawv yog siv raubacklighting nyees khawm nyob rau hauv lub xov tooj ntawm tes los yog rau cov hniav LED sawb.
5050 LEDs (lub cev hom loj: 5 x 5 hli) yog cov khoom siv hluav taws xob semiconductor, qhov hluav taws xob rau pem hauv ntej yog 1.8-3.4 V, thiab lub zog ncaj qha tam sim no rau txhua lub siv lead ua yog txog 25 mA. Qhov peculiarity ntawm SMD 5050 LEDs yog tias lawv cov qauv tsim muaj peb lub ntsej muag, uas tso cai rau LED tawm ntau xim. Lawv hu ua RGB LEDs. Lawv lub cev yog ua los ntawm cov yas uas kub-resistant. Lub diffuse lens yog pob tshab thiab ntim nrog epoxy resin.
Yuav kom 5050 LEDs kav ntev li ntev tau, lawv yuav tsum tau txuas nrog cov kev ntsuas kev tiv thaiv hauv koob. Rau qhov kev ntseeg siab tshaj plaws ntawm lub voj voog, nws yog qhov zoo dua los txuas ib qho kev sib cais rau txhua txoj saw.
Schemes rau hloov ntawm flashing LEDs
Lub flashing LED yog LED nrog lub tshuab hluav taws xob mem tes ua rau hauv nws. Nws flash zaus yog los ntawm 1.5 txog 3 Hz.
Txawm hais tias lub teeb ntsais LED yog qhov sib txuam, nws muaj cov khoom siv hluav taws xob semiconductor thiab cov ntsiab lus ntxiv.
Raws li rau qhov hluav taws xob ntawm lub ntsais LED, nws yog universal thiab tuaj yeem sib txawv. Piv txwv li, rau high-voltage nws yog 3-14 volts, thiab rau low-voltage nws yog 1.8-5 volts.
Raws li, qhov zoo ntawm lub teeb ci LED suav nrog, ntxiv rau qhov me me thiab compactness ntawm lub teeb pom kev zoo, kuj muaj ntau qhov kev tso cai voltage. Tsis tas li ntawd, nws tuaj yeem tawm ntau xim.
Nyob hauv nyias hom flashingLEDs tau tsim nyob rau hauv kwv yees li peb-xim LEDs, uas muaj qhov sib txawv flash intervals.
Flashing LEDs kuj tseem pheej yig heev. Qhov tseeb yog tias cov hluav taws xob hluav taws xob rau kev hloov ntawm LED yog tsim los ntawm MOS cov qauv, ua tsaug rau qhov chaw ua haujlwm sib cais tuaj yeem hloov tau nrog lub blinking diode. Vim lawv qhov me me, flashing LEDs feem ntau siv hauv cov khoom siv compact uas xav tau cov xov tooj cua me me.
Hauv daim duab, flashing LEDs tau qhia tib yam li cov tib yam nkaus xwb, tsuas yog qhov tshwj xeeb yog cov kab ntawm cov xub tsis yog ncaj, tab sis dotted. Yog li, lawv cim lub flashing ntawm LED.
Los ntawm lub cev pob tshab ntawm lub ntsag LED, koj tuaj yeem pom tias nws muaj ob ntu. Nyob ntawd, ntawm lub davhlau ya nyob twg tsis zoo ntawm lub hauv paus cathode, muaj lub teeb emitting diode siv lead ua, thiab ntawm lub anode davhlau ya nyob twg, muaj ib qho oscillator nti.
Tag nrho cov khoom ntawm cov cuab yeej no txuas nrog siv peb lub xov hlau kub jumpers. Txhawm rau paub qhov txawv ntawm lub teeb ci LED los ntawm ib qho qub, tsuas yog saib ntawm lub tsev pob tshab hauv lub teeb. Nyob ntawd koj tuaj yeem pom ob lub substrates ntawm tib qhov loj.
Ntawm ib lub substrate yog crystalline lub teeb emitter lub voos xwmfab. Nws yog ua los ntawm lub ntiaj teb tsis tshua muaj alloy. Txhawm rau ua kom cov luminous flux thiab ua kom pom tseeb, nrog rau kev tsim cov qauv hluav taws xob, siv cov parabolic aluminium reflector. Qhov no reflector nyob rau hauv lub blinking LED yog me me nyob rau hauv loj dua nyob rau hauv ib txwm ib tug. Qhov no yog vim nyob rau hauv lub thib ob ib nrabrooj plaub muaj ib lub substrate nrog ib tug integrated circuit.
Ob lub substrates no txuas rau ib leeg los ntawm ob txoj hlua hlau txuas hniav. Raws li rau lub cev ntawm lub blinking LED, nws tuaj yeem ua los ntawm lub teeb-diffusing matte yas lossis pob tshab yas.
Vim qhov tseeb tias lub emitter nyob rau hauv lub blinking LED tsis nyob rau ntawm lub axis ntawm symmetry ntawm lub cev, nws yog tsim nyog los siv ib tug monolithic xim diffuse teeb qhia rau kev ua hauj lwm ntawm uniform illumination.
Lub xub ntiag ntawm lub tsev pob tshab tuaj yeem pom tsuas yog nyob rau hauv flashing LEDs ntawm txoj kab uas hla loj, uas muaj cov qauv hluav taws xob nqaim.
Lub teeb ci LED lub tshuab hluav taws xob muaj lub tshuab hluav taws xob ntau zaus oscillator. Nws ua haujlwm tas li, thiab qhov zaus yog li 100 kHz.
Nrog rau lub tshuab hluav taws xob ntau zaus, ib qho kev faib tawm ntawm cov ntsiab lus tseem ceeb kuj ua haujlwm. Nws, nyob rau hauv lem, faib lub siab zaus mus txog 1.5-3 Hz. Yog vim li cas rau kev siv lub tshuab hluav taws xob ntau zaus nrog lub tshuab hluav taws xob sib faib yog qhov kev ua haujlwm ntawm lub tshuab hluav taws xob tsawg yuav tsum muaj lub tshuab hluav taws xob nrog lub peev xwm loj tshaj plaws rau lub sijhawm sib tw.
Nqa qhov siab mus txog 1-3 Hz yuav tsum muaj cov kev faib tawm ntawm cov ntsiab lus logic. Thiab lawv tuaj yeem siv tau yooj yim heev ntawm qhov chaw me me ntawm cov khoom siv hluav taws xob semiconductor. Nyob rau hauv lub semiconductor substrate, ntxiv rau lub divider thiab master high-frequency oscillator, muaj ib tug tiv thaiv diode thiab hluav taws xob hloov. Txwv tsis pubLub resistor yog tsim rau hauv lub flashing LEDs, uas yog ntsuas rau ib tug voltage ntawm 3 mus rau 12 volts.
Tsawg voltage flashing LEDs
Raws li rau qhov tsis tshua muaj hluav taws xob flashing LEDs, lawv tsis muaj qhov txwv tsis pub. Thaum cov khoom siv hluav taws xob thim rov qab, yuav tsum muaj kev tiv thaiv diode. Nws yog qhov tsim nyog txhawm rau tiv thaiv qhov tsis ua haujlwm ntawm microcircuit.
Yuav kom lub siab-voltage flashing LEDs ua haujlwm tau ntev thiab mus zoo, cov khoom siv hluav taws xob yuav tsum tsis pub tshaj 9 volts. Yog hais tias qhov voltage nce, ces lub zog dissipation ntawm lub blinking LED yuav nce, uas yuav ua rau cua sov ntawm lub semiconductor siv lead ua. Tom qab ntawd, vim muaj cua sov ntau dhau, kev puas tsuaj ntawm lub ntsag LED yuav pib.
Thaum nws yuav tsum tau kuaj xyuas kev noj qab haus huv ntawm lub teeb ci LED, txhawm rau ua qhov no kom nyab xeeb, koj tuaj yeem siv lub roj teeb 4.5 volt thiab 51 ohm resistor txuas nrog hauv series nrog LED. Lub zog ntawm cov resistor yuav tsum yog tsawg kawg yog 0.25W.
Kev teeb tsa LEDs
Kev teeb tsa ntawm LEDs yog qhov teeb meem tseem ceeb heev vim tias nws cuam tshuam ncaj qha rau lawv txoj kev muaj peev xwm.
Vim tias LEDs thiab microcircuits tsis nyiam zoo li qub thiab kub dhau, nws yog ib qho tsim nyog yuav tsum tau solder qhov chaw kom sai li sai tau, tsis pub ntau tshaj tsib vib nas this. Nyob rau hauv cov ntaub ntawv no, koj yuav tsum tau siv ib tug tsawg zog soldering hlau. Qhov kub ntawm qhov taub yuav tsum tsis txhob siab tshaj 260 degrees.
Thaum soldering, koj tuaj yeem siv cov tweezers kho mob ntxiv. Tweezers LEDyog clamped los ze zog rau cov ntaub ntawv, vim hais tias qhov kev tshem tawm cua sov ntxiv los ntawm cov siv lead ua yog tsim thaum soldering. Yog li ntawd cov ceg ntawm LED tsis tawg, lawv yuav tsum tsis txhob khoov ntau. Lawv yuav tsum nyob ua ke ib leeg.
Yuav kom tsis txhob overload lossis luv luv, lub cuab yeej yuav tsum tau nruab nrog lub fuse.
Tshaj tawm kom du rau ntawm LEDs
Lub tswv yim muag muag thiab tawm LED yog nrov ntawm lwm tus, thiab cov tswv tsheb uas xav kho lawv lub tsheb yog txaus siab rau nws. Cov tswv yim no yog siv los teeb pom kev sab hauv ntawm lub tsheb. Tab sis qhov no tsis yog nws daim ntawv thov nkaus xwb. Nws yog siv rau lwm qhov chaw thiab.
Ib qho yooj yim LED muag pib Circuit Court yuav muaj xws li transistor, capacitor, ob resistors thiab LED. Nws yog ib qho tsim nyog los xaiv cov kev txwv tam sim no uas tuaj yeem dhau qhov tam sim no ntawm 20 mA los ntawm txhua txoj hlua ntawm LEDs.
Lub voj voog rau kev ua kom zoo thiab tawm ntawm LEDs yuav tsis ua tiav yam tsis muaj lub capacitor. Nws yog tus uas tso cai rau nws sau. Lub transistor yuav tsum yog p-n-p-structure. Thiab tam sim no ntawm lub collector yuav tsum tsis pub tsawg tshaj 100 mA. Yog tias lub teeb pom kev zoo ntawm LED pib sib sau ua ke kom raug, tom qab ntawd, siv cov piv txwv ntawm lub teeb pom kev hauv lub tsheb, cov LEDs yuav qhib tau zoo nyob rau hauv 1 thib ob, thiab tom qab lub qhov rooj kaw lawm, lawv yuav tua tau zoo.
Hloov pauv ntawm LEDs. Daim duab
Ib qho ntawm cov teeb pom kev zoo siv LEDs tig rau ntawm ib qho los ntawm ib qho. Nws yog hu ua hluav taws kub. Xws li cov txheej txheem ua haujlwm los ntawm kev siv hluav taws xob autonomous. Rau nws tus qauv tsim, ib qho kev hloov pauv tau siv, uas muab lub zog rau txhua qhov LEDs tig.
Xav txog lub cuab yeej uas muaj ob lub microcircuits thiab kaum transistors, uas ua ke ua tus tswv oscillator, tswj thiab ntsuas nws tus kheej. Los ntawm cov zis ntawm tus tswv oscillator, cov mem tes kis tau mus rau qhov chaw tswj, uas kuj yog tus lej lej. Tom qab ntawd qhov voltage yog siv rau lub hauv paus ntawm lub transistor thiab qhib nws. Lub anode ntawm LED txuas nrog rau qhov zoo ntawm lub zog hluav taws xob, uas ua rau lub teeb ci.
Tus thib ob mem tes tsim ib qho kev sib txuas lus ntawm qhov tso zis tom ntej ntawm lub txee, thiab qhov hluav taws xob qis yuav tshwm sim rau yav dhau los thiab kaw lub transistor, ua rau lub LED tua. Tom qab ntawd txhua yam tshwm sim hauv tib ntu.
