Tsav LEDs muaj nyob rau hauv lub network 220

Nws tau ua heev nrov teeb pom kev zoo LED teeb. Qhov no yog hais tias qhov no pab tsis yog tsuas yog haib txaus, tab sis kuj tsis kim heev. Lub teeb-emitting diodes - ib tug semiconductor diode nyob rau hauv ib tug epoxy lub hnab ntawv.

Thaum chiv thawj lawv heev tsis muaj zog thiab kim heev. Tab sis tom qab nyob rau hauv cov tau raug muab ib tug heev ci dawb thiab xiav diodes. By lub sij hawm lawv cov kev ua lag luam tus nqi poob. Thaum lub caij, muaj cov LEDs ntawm tej xim, uas yog vim li cas rau siv nyob rau hauv ntau yam teb. Cov no muaj xws kev pab them nqi sib txawv ntawm cov chav, teeb pom kev zoo qhia thiab signage, siv cov kev qhia thiab tsheb teeb nyob rau hauv lub hav zoov thiab cov teeb ntawm lub tsheb, txawb tes thiab thiaj li nyob. D.

piav qhia

LEDs haus me ntsis hwj chim, nrog rau cov tshwm sim hais tias xws li kev pab them nqi yog maj hloov lub yav tas los uas twb muaj lawm lub teeb qhov chaw. Nyob rau hauv tshwj xeeb khw muag khoom noj, koj yuav yuav ib tug ntau yam ntawm tej yam khoom raws li LED teeb pom kev zoo, xws li los ntawm cov pa teeb thiab LED sawb, xov LED panels. Lawv tag nrho cov muaj nyob rau hauv ntau yog hais tias lawv kev twb kev txuas yuav tsum tau ib tug tam sim no ntawm 12 los yog 24 V.

Tsis zoo li lwm yam teeb qhov chaw uas siv ib tug caij cua kub yog thov ib tug semiconductor nti uas generates kho qhov muag tawg nyob rau hauv tus ntawm tam sim no.

Yuav kom to taub rau hauv Circuit Court ntawm LEDs 220 muaj nyob rau hauv lub network, koj yuav tau pib hais tias nws yuav tsis tau noj ncaj qha los ntawm lub network. Yog li ntawd, mus ua hauj lwm nrog LEDs yuav tsum ua raws li ib qho kev ib theem zuj zus ntawm lawv kev twb kev txuas mus rau lub high-voltage network.

Cov hluav taws xob thaj chaw ntawm LEDs

Cov tam sim no-voltage yam ntxwv ntawm cov LED - nws yog ib tug txias kab. Uas yog, yog hais tias tus voltage yuav ua rau kom tsawg kawg yog ib me ntsis, ces tam sim no yuav ua rau kom sharply, qhov no yuav entail lub overheating ntawm cov LED, ua raws li los ntawm ib tug burnout. Kom tsis txhob no, nws yog tsim nyog los muaj xws li nyob rau hauv lub Circuit Court tam sim no txawj resistor.

Tab sis nws yog ib qho tseem ceeb tsis tau hnov qab txog lub siab tshaj plaws rov qab voltage LED 20 V. Nyob rau hauv cov ntaub ntawv ntawm kev twb kev txuas mus rau ib tug polarity reversal network nws yuav ncov voltage ntawm 315 volts, uas yog 1,41 lub sij hawm ntau tshaj li qhov tam sim no. Qhov tseeb yog hais tias tus tam sim no network ntawm 220 volts AC, thiab nws chiv mus nyob rau hauv ib tug kev taw qhia thiab ces rov qab dua.

Nyob rau hauv thiaj li yuav tiv thaiv kom txhob tam sim no mus nyob rau hauv kev coj rov qab ntawm lub LED kev twb kev txuas Circuit Court yuav tsum tau raws li nram no: ib tug diode Circuit Court yog muab rau. Nws tsis tau nco ib tug rov qab voltage. Nyob rau hauv no kev twb kev txuas nws muaj yuav mus tib seem.

Lwm LED Circuit Court switching network 220 yog lub installation ntawm ob anti-thaum uas tig mus LEDs.

Raws li rau lub mains fais fab mov nrog xa me nyuam rov resistor, nws tsis yog qhov zoo tshaj plaws kev xaiv. Vim hais tias cov resistor yuav muab tawm ib tug muaj zog lub hwj chim. Piv txwv li, thaum uas siv cov 24 kOhm resistor, lub hwj chim dissipation yog kwv yees li 3 watts. Thaum lub series hwj chim diode dauv los ntawm ib nrab. Rov qab voltage rau lub diode yuav tsum sib npaug zos rau 400 V. Thaum muaj ob counter LEDs, koj muaj peev xwm muab ob dvuhvattnyh resistor. Lawv kuj yuav tsum yuav ob zaug raws li tsawg. Nws yog tau hais tias nyob rau hauv ib tug cov ntaub ntawv ob muaju ntawm txawv xim. Feem ntau, ib tug tib siv lead ua liab, lwm ntsuab.

Nyob rau hauv lub rooj plaub uas lub resistor yog 200 ohms, lub xub ntiag ntawm cov kev tiv thaiv diode yog tsis yuav tsum tau, vim tam sim no nyob rau hauv lub rov qab Hoob no yog me me thiab yuav tsis ua kev puas tsuaj rau tus siv lead ua. Qhov no tswvyim yog lub xam nrog ntawm LEDs nyob rau hauv lub network muaj ib drawback - ib tug me me qhov muag teev brightness. Nws yuav siv tau, e.g., rau sab hauv tsev teeb pom kev zoo mus.

Vim lub fact tias tam sim no nyob rau hauv lub AC mains, nws tso cai rau koj kom tsis txhob ruaj siv cov hluav taws xob rau cua sov rau cov huab cua los ntawm txoj kev txawj resistor. Nrog rau qhov no ua hauj lwm tiv capacitor. Tom qab tag nrho, nws pheej tsis tshua mus rau cov alternating tam sim no thiab tsis yog rhuab.

Nws yog ib qho tseem ceeb yuav tau nco ntsoov hais tias tus condenser yuav tsum xeem dhau ob lub mains ib nrab voj voog, yog li ntawd nws muaj peev xwm kis tau ib tug alternating tam sim no. Thiab txij li thaum lub LED ua xwb nyob rau hauv ib tug coj, nws yog tsim nyog los muab tso rau ib tug pa diode (LED lwm ntxiv) anti-thaum uas tig mus LED. Tom qab ntawd nws yuav nco tus thib ob ib nrab sij hawm.

Thaum lub Circuit Court switching network LED 220 yog muab tua, lub voltage rau lub capacitor yuav nyob twj ywm. Tej zaum txawm tias ib tug tag nrho cov amplitude ntawm 315 V. Nws hawv strike tam sim no. Kom tsis txhob no, koj yuav tsum muab nyob rau hauv tas li ntawd mus rau lub capacitor thiab tawm resistor muaj ib tug loj lub ntsej muag tus nqi, uas nyob rau hauv cov ntaub ntawv ntawm disconnection los ntawm lub network tam sim ntawd tshem tawm cov capacitor. Los ntawm no resistor thaum lub sij hawm nws ib txwm ua lag luam, tam sim no tsev me ntsis, tsis txhob kub.

Rau kev tiv thaiv tiv thaiv pulsed them tam sim no thiab fuse li teem tsawg kuj resistor. Lub capacitor yuav tsum cai, uas yog tsim los rau ib tug alternating tam sim no Circuit Court uas tsis tsawg tshaj li 250 V, los yog 400 V.

Scheme series kev twb kev txuas ntawm LED teeb noob yuav lub installation ntawm ib tug xov tooj ntawm LEDs kev cob cog rua nyob rau hauv series. Rau qhov ua piv txwv, tsuas yog ib counter diode.

Txij li thaum lub voltage nco ntawm qhov tam sim no nyob rau lub resistor yog qhov tsawg, los ntawm lub hwj chim qhov twg los yuav tsum tau rho tawm los ntawm tag nrho cov voltage nco thoob plaws lub LEDs.

Nws yog tsim nyog los muab cov diode twb xam tam sim no sib npaug rau tam sim no ntws los ntawm cov LEDs, thiab ib tug rov qab voltage yuav tsum sib npaug zos rau cov sum ntawm cov txhawj xeeb nyob rau hauv cov LEDs. Nws yog qhov zoo tshaj plaws los mus siv ib tug txawm tooj ntawm LEDs thiab mus cuag lawv nyob rau hauv antiparallel.

Nyob rau hauv ib cov saw yuav ua tau ntau tshaj li kaum LEDs. Los mus laij lub capacitor, yuav tsum tau rho tawm los ntawm lub ncov voltage network 315 nyob rau hauv tus nqi ntawm cov voltage nco LEDs. Raws li ib tug tshwm sim, peb yuav nrhiav tau tawm hauv lub xov tooj ntawm cov voltage nco thoob plaws lub capacitor.

LED kev twb kev txuas uas tsis

• Tus thawj yuam kev - qhov no yog thaum tus LED yog kev cob cog rua tsis nres, ncaj qha mus rau qhov chaw. Nyob rau hauv cov ntaub ntawv no, lub LED heev sai sai tsis, vim cov tsis muaj tswj tus nqi ntawm cov tam sim no.
• Qhov thib ob kev ua yuam kev - lub kev twb kev txuas rau cov kev resistor LEDs teem nyob rau hauv thaum uas tig mus. Vim lub fact tias muaj yog variation tsis, ci ci LEDs combustion yuav sib txawv. Dhau li ntawd, nyob rau hauv cov ntaub ntawv ib tug ntawm cov LEDs tsis, yuav muaj ib qho kev nce ntawm lub thib ob LED tam sim no, vim uas nws muaj peev xwm hlawv. Yog li ntawd, thaum ib tug resistor yog siv, nws yog tsim nyog mus cuag cov LEDs nyob rau hauv series. Qhov no tso cai rau koj kom tib yam tam sim no nyob rau hauv lub xam ntawm lub resistor thiab muab tso rau lub LED voltage.
• Qhov thib peb yuam kev - qhov no yog thaum tus LEDs, uas yog xam rau ib tug txawv tam sim no, muaj xws li cov series. Qhov no yog vim li cas hais tias ib tug ntawm lawv yuav hlawv tsawg, los yog vice versa - mus ua hauj lwm rau hnav.
• Qhov thib plaub yuam kev - yog siv ib tug resistor uas nws kuj yog tsis txaus. Vim hais tias ntawm no, tam sim no ntws los ntawm cov LED, nws yuav loj heev. Ib txhia ntawm lub zog ntawm txhawb voltage, hloov dua siab tshiab los ua cua sov, ua rau overheating ntawm tus siv lead ua thiab ib tug tseem ceeb yuav txo tau ntawm nws pab tau lub neej. Yog vim li cas rau qhov no - ntxaij ntoo tsis xws luag. Yog hais tias lub voltage nce ntxiv, thiab lub p-n-txoj kev hloov heats li, nws yuav coj mus rau ib tug txo nyob rau hauv internal quantum efficiency. Raws li ib tug tshwm sim ntawm lub caij nplooj zeeg ntawm lub LED brightness, thiab tus siv lead ua yuav raug kev puas tsuaj.
• Fifth yuam kev - LED rau 220V, uas yog heev yooj yim Circuit Court uas tsis muaj rov qab voltage txwv. Qhov siab tshaj plaws pub rov qab voltage rau feem ntau LEDs - txog 2 V, thiab ib tug rov qab voltage ib nrab-cycle feem nyob rau voltage nco, uas yog sib npaug zos rau cov mov voltage thaum xauv LED.
• Qhov thib rau yog vim li cas - yog siv ib tug resistor, uas nws lub hwj chim yog tsis txaus. Qhov no provokes muaj zog cua sov resistor thiab cov txheej txheem ntawm melting rwb thaiv tsev, uas tseem ua hauj lwm nrog nws cov xov. Ces pib yuav tsum tau burnt xim thiab nyob rau hauv tus ntawm siab kub los kev puas tsuaj. Tag nrho vim lub fact tias cov resistor dissipates tsuas yog tus muaj peev xwm rau cov uas nws tau tsim.

Lub tswvyim ntawm xam ntawm ib tug haib LED

Yuav kom txuas high-power LEDs yuav tsum tau siv lub AC / DC-converters, nyob rau hauv uas ruaj khov tso zis tam sim no. Qhov no yuav pab tau kom renounce siv ntawm resistors los yog IC LED tsav tsheb. Nyob rau tib lub sij hawm peb yuav ua tau ib tug yooj yim kev twb kev txuas ntawm lub LEDs, ib tug xis kev siv ntawm lub system thiab txo tus nqi.

Ua ntej peb yuav tig mus rau lub mains hwj chim LEDs, xyuas kom meej lub ntseeg ntawm lawv cov kev twb kev txuas rau lub hwj huam mov. Tsis txhob txuas lub system rau lub hwj huam mov, uas yog nyob rau hauv nro, txwv tsis pub nws yuav ua rau tsis ua hauj lwm ntawm lub LEDs.

5050. Cov yam ntxwv ntawm LEDs. Lub tswvyim ntawm cov menyuamuas

Rau cov uas tsis muaj hwj huam LEDs kuj LEDs yog nto mount (SMD). Feem ntau cov feem ntau, lawv yog siv los ci ntsa iab cov nyees khawm nyob rau hauv cov xov tooj txawb los yog rau cov hniav LED sawb.

LEDs 5050 (tipokorpusa loj: 5 hli 5) - yog semiconductor teeb qhov chaw, uas ncaj voltage 1,8-3,4 V thiab qhov ncaj tam sim no hwj chim rau txhua crystal - 25 ma. Feature LED SMD 5050 lus dag nyob rau hauv lub fact tias lawv siv muaj peb muaju, uas tso cai rau cov LED emits ntau xim. Lawv hu ua RGB-LEDs. Vaj tse rau lawv yog ua los ntawm tshav kub-resistant yas. Lub lens yog pob tshab dispersion thiab kaw nrog epoxy.

Mus rau LEDs 5050 mus ua hauj lwm raws li ntev li sai tau, lawv yuav tsum tau kev cob cog rua rau lub nominal resistances nyob rau hauv series. Rau siab tshaj plaws cia siab rau ntawm txhua Circuit Court nyob rau hauv cov saw hlau zoo cuag ib tug nyias muaj nyias ib resistor.

Cov tswv yim mus teeb rau flashing LEDs

Ib tug flashing LED - ib tug LED, uas yog kos nyob rau hauv ib tug kev mem tes generator. Zaus ntawm flashes nws yog los ntawm 1.5 mus rau 3 Hz.

Txawm tias muaj tseeb hais tias cov flashing LED compact txaus, nws yog tsis muaj tsev nyob semiconductor nti oscillator, thiab ntxiv cov ntsiab rau nws.

Raws li rau flashing LED voltage, nws yog universal thiab tej zaum yuav txawv. Piv txwv li, rau high-Z yog 14 volts, thiab cov uas tsis muaj-voltage 1,8-5 volts.

Raws li, qhov zoo zoo flashing LED yuav muaj xws li, nyob rau hauv tas li ntawd me me luaj li cas thiab lub teeb signaling ntaus ntawv yog compact, thiab tsis tau ib tug ntau yam ntawm cov pub voltage. Nyob rau hauv tas li ntawd, nws yuav emit txawv xim.

Nyob rau hauv tej yam hom flashing LEDs yog tso hais txog peb sib txawv kob LEDs uas muaj ntau zaus ntawm kab mob.

Blinking LEDs kuj yig. Lub fact tias cov hluav taws xob Circuit Court ntawm lub LED yog ua rau MOSFETs, li no flashing diode yuav hloov los ntawm ib tug ua hauj unit. Vim lub me me qhov ntev ntawm flashing LEDs yog feem ntau siv nyob rau hauv compact pab kiag li lawm uas yuav tsum tau me ntsis tej ntsiab.

Nyob rau hauv daim duab, tus flashing LED qhia tib txoj kev raws li ib txwm, nrog rau cov kev zam xwb nyob rau hauv lub fact tias lub shooter yog tsis yog ib tug kab ncaj thiab dashed. Yog li, lawv sawv cev rau lub blinking LED.

Los ntawm cov pob tshab cov ntaub ntawv flashing LED qhia tau hais tias nws muaj ob qhov chaw. Muaj, nyob rau negative ncej ntawm lub cathode hauv paus yog ib lub teeb emitting diode nti, thiab lub anode davhlau ya nyob twg nyob generator nti.

Muaj kev cob cog tag nrho lub Cheebtsam ntawm lub ntaus ntawv siv peb kub hlau jumpers. Yuav kom paub qhov txawv ntawm lub niaj zaus flashing LED, txaus saib lub teeb pob tshab lub cev. Muaj peev xwm yuav pom ob sib npaug zos loj substrate.

Nyob rau ib lub substrate yog crystalline lub voos xwmfab lub teeb emitter. Nws muaj ib tug tsawg lub ntiaj teb hlau. Nyob rau hauv thiaj li yuav nce lub teeb tso zis thiab tsom raws li zoo raws li rau beamforming siv ib tug Parabolic txhuas Reflector. Qhov no Reflector flashing LED yog me dua li ib txwm. Qhov no yog vim lub fact tias tus thib ob ib nrab plhaub yog padded nrog lub IC.

Ntawm no ob substrates yog tshwm nrog ob tug thav hlau jumpers. Nrog hais txog lub vaj tse flashing LED, tej zaum nws yuav tsum ua los ntawm diffuser los yog matte yas, los yog ntawm pob tshab yas.

Vim lub fact tias cov emitter flashing LED yog tsis nyob rau hauv lub axis ntawm symmetry ntawm lub vaj tse, rau lub lag luam ntawm lub uniform illumination yog tsim nyog los siv ib tug monolithic diffuse xim fiber.

Qhov kuaj pom ntawm ib tug pob tshab lub cev muaj peev xwm yuav nrhiav tau tsuas yog nyob rau hauv lub blinking LEDs loj inch, uas muaj ib tug nqiam tawg qauv.

Vim hais tias cov high-zaus oscillator comprises ib generator ntsais LED. Nws ua hauj lwm yog qhov, thiab cov zaus yog hais txog 100 kHz.

Nrog rau lub high-zaus generator yog ntxiv operable divider logic hais. Nws, nyob rau hauv lem, ua lub division ntawm siab zaus rau 1.5-3 Hz. Yog vim li cas rau ob leeg siv nrog ib tug high-zaus generator yog ib zaus divider uas rau tsawg zaus oscillator yuav tsum tau ib tug capacitor nrog tus loj tshaj lub peev xwm rau lub sij hawm-chaw Circuit Court.

Nqa mus rau ib tug high-zaus 1-3 Hz yuav tsum tau dividers rau cov zajlus kom hais. Tab sis txaus lawv tau yooj yim yuav ua ntawv thov kom ib tug me me rau thaj tsam ntawm lub semiconductor nti. Nyob rau semiconductor substrate, nyob rau hauv tas li ntawd mus rau lub divider thiab tus tswv zaus generator, yog ib tug tiv thaiv diode thiab ib tug hluav taws xob tseem ceeb. Ib tug txawj resistor yog incorporated rau hauv lub teeb ntsais LEDs, uas yog xam ntawm lub voltage ntawm 3 mus rau 12 volts.

Tsis tshua muaj Voltage flashing LEDs

Raws li rau cov uas tsis muaj-voltage LED blinking, ces lawv tsis muaj ib tug yuav txawj resistor. Thaum lub hwj chim polarity reversal tiv thaiv diode yuav tsum tau. Nws yuav tsum tau los mus tiv thaiv cov qhov tso zis Circuit Court tsis ua hauj lwm.

Lub chaw ua hauj lwm ntawm high-flashing LEDs yog ntev thiab mus ntseeg nkaws, lub mov voltage yuav tsum tsis pub tshaj 9 volts. Yog hais tias lub voltage nce, flashing LED hwj chim dissipation yuav ua rau kom, uas yuav ua rau cua sov ntawm lub semiconductor nti. Tom qab, cov LED yuav pib flashing degradation vim ntev li cua sov.

Thaum koj yuav tau mus xyuas lub serviceability ntawm flashing LED, nyob rau hauv thiaj li yuav ua tau li no yam xyuam xim, koj yuav tau siv lub roj teeb ntawm 4.5 volts thiab kev cob cog rua nyob rau hauv series nrog ib tug LED resistor ntawm 51 ohms. Fais fab resistors yuav tsum muaj tsawg kawg yog 0.25 watts.

Mounting LEDs

Installation ntawm LED - ib tug tseem ceeb heev qhov teeb meem rau tej yam yooj yim yog vim li cas hais tias nws yog ncaj qha mus txog lawv cov nqi.

Txij li thaum LED thiab nti tsis nyiam zoo li qub, thiab overheating, nws yog tsim nyog los solder qhov chaw raws li sai li sai tau, tsis muaj ntau tshaj li tsib nas this. Yog li ntawd nws yog tsim nyog los siv muaj hwj huam soldering hlau. ntsis kub yuav tsum tsis pub tshaj 260 degrees.

Thaum soldering yog ntxiv tej zaum yuav siv ib tug kws kho ncais. LED ncais clamped nyob ze rau qhov lub cev, thiaj li hais tias thaum soldering tsim ntxiv thaum tshav kub kub tshem tawm los ntawm lub nti. Rau cov LED ob txhais ceg yog tsis tau tawg, lawv yuav tsum tsis txhob khoov npaum li cas. Lawv yuav tsum mus tib seem rau txhua lwm yam.

Nyob rau hauv kev txiav txim kom tsis txhob overloading rau hauv Circuit Court los yog ntaus ntawv tsim nyog los muab cov fuse.

Tsav mos pib LEDs

Tsav ntseeg nkaws rau hauv thiab tawm hauv lub LEDs - nrov ntawm cov lwm leej lwm tus, nws xav tsheb cov tswv uas xav mus qhib lawv lub tsheb. Qhov no tswvyim yog siv los ci ntsa iab rau hauv lub tsheb thaxim sab hauv. Tab sis qhov no yog tsis nws tsuas siv. Nws yog siv nyob rau hauv lwm qhov chaw.

Tej yam yooj yim mos pib Circuit Court LEDs yuav tsum muaj xws li ib tug transistor, ib tug capacitor, ob resistors thiab LEDs. Koj yuav tsum tuaj tos xws tam sim no-limiting resistors, uas muaj peev xwm nqa ib tug tam sim no ntawm 20 MA los ntawm txhua LED txoj hlua.

Tsav ntseeg nkaws rau hauv thiab tawm hauv lub LEDs yuav tsis tau ua kom tiav tsis muaj tus xub ntiag ntawm lub capacitor. Nws tso cai rau nws mus sau. Lub transistor yuav tsum pnp-qauv. Ib tug tam sim no nyob rau collector yuav tsum tsis txhob yuav tsawg tshaj li 100 ma. Yog hais tias lub tswvyim yog mos pib LEDs tuaj txoos ua ke kom raug, cov piv txwv ntawm lub tsheb thaxim sab hauv teeb pom kev zoo rau 1 thib ob yuav tsum mos pib LEDs, thiab tom qab kaw lub qhov rooj - tus shutdown.

Alternating rau LEDs. tswvyim

Ib tug ntawm cov teeb pom kev zoo nrog LED lub yog qho lawv xam. Nws yog xa mus rau raws li ib tug khiav hluav taws. Nws ua hauj lwm xws li ib tug tswvyim ntawm siv yooj yim lub hwj chim. Rau nws designs siv ib tug pa hloov uas khoom siv hwj chim qho rau txhua yam ntawm lub LEDs.

Xav txog ib tug ntaus ntawv uas muaj ob daim tawv nyias thiab kaum transistors, uas ua ke roos ib tug tswv oscillator, tswj thiab indexing nws tus kheej. aka decimal counter los ntawm cov qhov tso zis ntawm tus tswv oscillator mem tes yog pauv mus rau cov kev tswj chav tsev. Ces, voltage yog thov mus rau lub hauv paus ntawm lub transistor thiab nws opens. Lub anode ntawm lub LED yog kev cob cog rua rau lub zoo hwj chim qhov twg los, ua rau luminescence.

Qhov thib ob mem tes generates ib zajlus kom chav tsev mus rau lub tom ntej no tso zis ntawm lub txee, thiab yav dhau los uas tsis muaj voltage thiab yuav kaw lub transistor, whereby lub LED mus. Ntxiv mus, tag nrho cov tshwm sim nyob rau hauv tib theem zuj zus.