Siv AC Nrog LEDs (Ntu 2) - thiab Ua Qhov Teeb Meem Ntawm Lub Teeb: 9 Kauj Ruam

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

Hauv Kev Siv AC nrog LEDs (Ntu 1) peb tau saib txoj hauv kev yooj yim kom khiav LEDs nrog lub hloov pauv txuas nrog AC Mains. Ntawm no, peb yuav saib kom tau txais peb cov LEDs ua haujlwm yam tsis muaj lub hloov pauv thiab tsim lub teeb yooj yim uas tau koom ua ke WARNING: Rau cov teb chaws uas muaj 110v mains, peb yuav tau ua haujlwm nrog qhov hluav taws xob ntawm 150 volts! Rau Tebchaws Europe thiab lwm lub tebchaws, peb tab tom tham txog 300 volts lossis ntau dua! Hauv cov theem no, hluav taws xob yog ua kom tuag! Tsis txhob txuas ntxiv tshwj tsis yog tias koj nyiam ua haujlwm nrog cov hluav taws xob siab thiab paub txog kev ceev faj kom ua! AC cov khoom siv tau hais hauv rms (hauv paus-txhais-xwmfab) qhov tseem ceeb. PEAK qhov hluav taws xob yog sqrt (2) * Vrms, uas yog kwv yees li 1.4 * Vrms

Kauj Ruam 1: Qee Tom Qab

Txoj hauv kev yooj yim thiab pom tseeb kom tau txais ntau pua volts nqes mus rau qib kom ua haujlwm ntawm LED ntawm 20mA yog tso lub resistor hauv koob nrog LED. Txhawm rau nrhiav seb qhov tseem ceeb peb tab tom tham txog, peb yuav siv tus nqi siab tshaj ntawm 110v, uas ua haujlwm tau 150v rau peb tus piv txwv (nws yuav yog ob npaug rau cov neeg Europe thiab Ozzies) 150 / 20mA = 7500-ohms (peb yuav tsum rho tawm qhov hluav taws xob ntawm LED los ntawm 150v ua ntej, tab sis qhov sib txawv me me) 7500-ohms? Tsis phem heev … Tab sis tom qab ntawd cia peb txiav txim siab lub zog ntsuas ntawm tus tiv thaiv no, siv Txoj Cai Fais Fab: P = (V^{2) / R, peb tau txais:}150 * 150 /7500 = 3 watts, thiab qhov ntawd yog qhov zoo nkauj tiv taus. Brits nrog 240v mains yuav xav tau 17000-ohm resistor ntsuas rau yuav luag 7-watts. Hmoov zoo, los ntawm kev hloov lub capacitor rau tus tiv thaiv, peb tuaj yeem tau txais qhov txo qis ib yam tsis muaj qhov kub (lossis ntau npaum li cas) cua sov. Cov Capacitors ncua sijhawm theem ntawm AC uas peb tuaj yeem siv los tawm tsam nws tus kheej, zoo ib yam li nthwv dej ntawm ntug dej tshem tawm qee qhov quab yuam ntawm cov tuaj.

Kauj Ruam 2: Peb Lub Vev Xaib

Siv tus nqi tiv thaiv los ntawm ua ntej, peb tuaj yeem suav tus nqi ntawm lub capacitor. Txij li thaum peb twb tau siv 1K tus tiv thaiv, qhov ua tau zoo, X (lub sijhawm zoo rau kev tiv thaiv nrog cov khoom siv hluav taws xob) tuaj yeem yog 1000 tsawg dua qhov peb xav tau. C = 1 / (2 * pi * f * X) qhov twg f yog qhov loj zaus uas yog.4uF rau 110v 60Hz, thiab.2uF rau 240v 50Hz. Ua ntej ntawm cov watts zoo li cov resistors, cov ntsuas hluav taws xob tau ntsuas los ntawm volts, peb yuav tsum xyuas kom tseeb tias peb tau txais lub kaus mom rau AT LEAST 250-volts (Xeev) thiab 450-volts rau 200 -volt countries. WARNING: Capacitors nrog qhov ntsuas hluav taws xob tsis txaus txaus yuav tawg! Qhov kev tsim qauv yooj yim no yuav tsav 2 - 16 LEDs yam tsis muaj kev hloov pauv. Tsuas yog muab tib tus lej ntawm LEDs hauv txhua ceg, thiab ua kom ntseeg tau tias koj txuas lawv nrog kev tawm tsam tam sim no.

Kauj Ruam 3: Kev Txhim Kho Tsis Raug Mob

Qhov tseeb, koj tuaj yeem sim tawm lub Circuit Court yam tsis muaj kev phom sij rau koj lub neej. Nws hloov pauv tau txaus los ua haujlwm raws li lub xov tooj ntiv tes ntsuas.

Siv lub.4uF (.33 txog.5uF) lub tshuab hluav taws xob thiab txuas koj lub cuab yeej mus rau 2 txoj hauv kev ntawm koj lub xov tooj sib txuas lub thawv (feem ntau yog cov xov tooj liab thiab ntsuab), thiab nws yuav nyem thaum koj tau txais kev hu xov tooj. NCO TSEG: Qhov no XWB ua haujlwm ntawm xov tooj cua hauv tsev - PBX thiab Cov xov tooj hauv nruab nrab tsis sib xws kiag li.

Kauj Ruam 4: Ua Lub Qhov Ncauj Teeb Tsom Teeb

Tam sim no peb muaj cov hauv paus tawm ntawm txoj kev, qhov no yog yam koj xav tau rau txoj haujlwm.

Qhov: Kev nthuav dav ntawm lub qhov (socket) - xyuas kom paub tseeb tias nws muaj cov ntsia hlau rov qab. Kuv tau txais kuv (a 'Noma') ntawm Lub Hom Phiaj (Radio Shack zoo li muaj qhov zoo ib yam ib yam nkaus). Pom tseeb koj yuav tsum tau txais ib qho uas haum rau lub zog hauv koj lub tebchaws. Capacitor - (Asmeskas, 110v 60Hz) txhua tus nqi los ntawm.33uF txog.47uF 250 -volts MINIMUM! (Lwm tus 200-240v 50Hz).15uF rau.22uF 400-volts MINIMUM! Resistor - 1000 -ohm (1K) 1/2W. Kuv tsis muaj 1/2W resistor, yog li kuv coj 3 x 3300-ohm 1/2W resistors thiab txuas lawv ua ke kom tau txais 1100-ohm 3/4W resistor LEDs-14 daim ntawm qhov ci ci, 20mA 5mm (T -3) Cov cua sov dawb ntsws ntsws tubing

Kauj Ruam 5: Npaj cov LEDs

Kuv tau ua qhov kev ntsuas no nrog 2 (them) roj teeb NiCd. Txawm hais tias nws tsuas tuaj yeem muab 2.5v, nws yuav ua rau lub zog LED nyob rau qib qis, uas ua rau kuv pom lub teeb pom kev zoo. Kuv kuj tau lees paub tias + tus coj yog qhov ntev dua.

Muab lawv tso rau hauv qhov ci ci thiab tso qhov ci dua nyob hauv nruab nrab.

Kauj Ruam 6: Npaj Lub Qhov (Socket)

Disassemle Expansion Bar. Nco tseg thaj chaw me me nyob rau sab saum toj thiab hauv qab ntawm chav uas peb tuaj yeem teeb tsa peb qhov chaw. Txiav txim siab qhov kawg koj xav ua haujlwm - txawm tias koj xav kom lub teeb ci los yog DOWN.

Kos tawm 2 kab ntawm 7 cov ntsiab lus, 3/8 "sib nrug ntawm daim kab xev npog. Nruab nrab qhov kawg koj txiav txim siab thiab pib 14 qhov nrog 1/16" ntsis. Nthuav tawm, siv 3/64 "ntsis. Ua kom lub qhov me me - nws yuav tsum tuav cov LEDs kom zoo.

Kauj Ruam 7: Txhim Kho Cov LEDs

Ua tus cim rau ntawm ib kawg ntawm kab hauv qab, thiab lwm lub cim ntawm qhov kawg ntawm kab rov tav. Qhov no yuav qhia koj sab zoo (xaim ntev dua) kawg ntawm LED yuav tsum mus.

Khoov cov LEDs hauv "L" cov duab (xaim luv ntawm qhov tsim nyog sab) thiab ua kom lawv nyob hauv kab hauv qab. Tshaj cov xov hlau txog 30o kom hla nws tus neeg nyob ze. Looj me ntsis kom nyob rau hauv qhov chaw, tab sis TSIS TXHOB xaus. Peb yuav sib sau ua ke cov LEDs hauv lub lattice - saib daim duab thib ob. Tsuas yog cov chav kawg, txhua LED yuav tsum muaj cov hlau lead kov 3 lwm LEDs. Nws pab los ntawm kev tsim ua ntej LEDs rau kab saum toj kawg nkaus yog li nws tuaj yeem tshem qhov "X" kev sib tshuam. (Saib daim duab) Thaum koj ua tiav, CAREFULLY reposition cov coj mus ua chav tom qab rau tus neeg tso npe thiab tus neeg siv khoom. Ua kom ntseeg tau tias cov pob qij txha txuas tau zoo thiab tsis muaj xaim luv.

Kauj Ruam 8: Tiav Touches

Solder zip xov hlau los ntawm lub hwj chim nqa mus rau lub capacitor thiab tus tiv thaiv. Tiv thaiv nrog cua sov ntsws tubing thiab txuas txhua qhov rau ib qho kawg ntawm cov saw LED.

Qhov chaw yog nruj, yog li tsuas yog siv cov hlau ntau npaum li qhov xav tau. Cov ntsuab ntsuab ntev nyob hauv qab lub hau yog cov sib txuas ua ke. Lub hau txuas nrog rau lwm qhov kawg ntawm LEDs nrog cov xaim liab. Cov xub loj yog kom paub tseeb tias kuv tsis pib ua haujlwm ntawm qhov tsis raug ntawm tus neeg mob! Xyuas kom txhua yam nruj thiab rov ua dua.

Kauj Ruam 9: TA-DA

… Tam sim no kuv qhov tsaus ntuj, qhov chaw ua haujlwm dank muaj teeb ci!