Txias Lub Teeb Los Ntawm Lub Laptop Lcd LCD!: 6 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:25

Puas tau xav txog kev rov siv lub qub laptop laptop LCD screen? yog, qhov tseeb koj tuaj yeem tsim lub teeb ci txias tawm ntawm nws uas yog lub zog muaj txiaj ntsig thiab nws txias vim tias koj siv cov khoom siv hluav taws xob rov qab.

Khoom siv

Lub laptop qub LCD

LM317 (Koj tus kheej tsim LED tsav tsheb)

Resistors 470E, 1.2k, 6.8E (Koj tus kheej tsim LED tsav tsheb)

Soldering Hlau

24V adapter (Koj tus kheej tsim LED tsav tsheb)

12 V adapter (Ib txwm tsim)

Kauj ruam 1: Txheeb Xyuas Koj Lub Vev Xaib

Yog tias koj saib ntawm LCD lub nraub qaum yuav muaj tus lej ntawm cov zaub thiab cov lej tsim khoom. Koj tuaj yeem yog google tus lej lossis koj tuaj yeem tshawb nrhiav hauv lcdscreen.com rau cov hom zaub thiab cov ntaub ntawv hais txog qhov hluav taws xob tam sim no thiab lwm yam los ntawm nws cov ntaub ntawv.

Kuv pom kuv cov ntaub ntawv dhau los kuv tuaj yeem nkag siab cov khoom tsim nyog xws li cov khoom siv hluav taws xob thiab cov koob uas nws xav tau txuas nrog thiab lwm yam.

Kauj Ruam 2: Nrhiav Cov Ntsiab Lus Sib Txuas

Tam sim no tuav lub iav tsom iav thiab ua tus neeg tshawb nrhiav kom paub qab haus huv (xov hlau) ntawm koj lub teeb rov qab txias. Yuav muaj cov npe hauv qab no hauv pawg thawj coj saib.

1. LED_EN lossis BL_EN

2. V_LED lossis VBL

3. LED_PWM

4. NCO

Peb xav tau tsuas yog 4 tus pin rau peb txoj haujlwm.

Nov yog thawj tus pin yog LED_EN raws li lub npe nws tus kheej hais tias nws ua rau LED yog tias muaj zog. Raws li kuv cov ntawv teev tseg, tus pin no muaj npe ua LED_EN thiab ntsuas raws li 3.3V.

Ceev faj: Thov txheeb xyuas qhov ntsuas hluav taws xob ua ntej tso lub zog

V_LED lossis VBL yog VDD qhov uas peb xav tau txuas lub zog hluav taws xob piv txwv li 12V uas yuav txhawb rau qhov xav tau hluav taws xob los ntawm kev txhawb nqa Circuit thiab thaum kawg yuav tsav los ntawm LED tsav tsheb.

LED_PWM lossis PWM tus pin yog qhov uas koj muab lub teeb ci ci rau cov zaub. Nov yog li cas koj lub khoos phis tawj lub teeb pom kev zoo sib txawv ntawm koj lub tswv yim Pulse Width Modulated teeb liab. Kev ntsuas yog hais txog lub luag haujlwm ntawm lub voj voog PWM thiab xam raws li Ton/(Ton+Toff) piv txwv li yog Toff yog xoom PWM yog 1 piv li 100%.

Peb yuav siv lub teeb pom kev zoo li 100%.

Cov av yuav txuas nrog hauv av.

Kauj Ruam 3: Txuas Txhua Yam

Ua ntej txuas cov xov hlau koj tuaj yeem tshem lub iav LCD sab saum toj, los ntawm kev tshem cov ntsia hlau sab. LCD thaiv yuav luag 40%ntawm lub teeb. Thaum koj tshem lub LCD koj yuav nyob nrog cov txheej dawb ci thiab daim ntawv Fresnel lo ntsiab muag kom pom kev tawg ntawm lub teeb. Ceev faj thaum rmoving LCD vim nws cuam tshuam nrog iav! Siv tsom iav kev nyab xeeb thiab hnab looj tes. Xa daim vis dis aus kom piav qhia tag nrho.

Thaum koj tau txais yam xav tau koj tsuas yog yuav tsum tau ntsuas cov ntsiab lus ntsuas hauv qib kawg, tom qab ntawd, txij li peb xav tau qib kev xav 3.3 ntawm ob tus PWM tus pin thiab EN tus pin peb yuav tau ua kom muaj qhov faib hluav taws xob uas tuaj yeem txo qhov tso tawm. voltage zoo li no.

Tam sim no koj tuaj yeem qhib qhov khoom siv, yog tias txhua yam mus tau zoo koj yuav tau txais tos nrog lub teeb ci zoo nkauj.

Ntawm no qhov faib hluav taws xob txiav txim siab qhov hluav taws xob tso tawm.

Cov zis hluav taws xob = VCCxR2/(R1+R2)

Hauv peb qhov xwm txheej, R2 yog 470 Ohm thiab R1 yog 1.2K Ohm.

Kauj Ruam 4: Ua Koj Tus Kheej LED Tsav Tsheb

Hauv kuv qhov xwm txheej, kuv tus tsav tsheb LED tsis ua haujlwm rau qee yam. Kuv tsuas yog tsim qhov tam sim no tsis tu ncua los txhawm rau tsav lub teeb ci LED. Qhov no yog qhov tsim nyog raws li kev thov ncaj qha rau cov LEDs yuav tua lawv tam sim vim qhov teeb meem tam sim no.

Raws li koj tuaj yeem pom hauv Circuit Court muaj tus tiv thaiv uas tau txuas nrog tus pin tso tawm thiab kho tus pin. Raws li cov ntaub ntawv ntawm LM317, qhov sib txawv qhov sib txawv ntawm qhov hloov tus pin thiab Vout tus pin yog 1.25V li no los ntawm kev faib cov tiv thaiv tsis tu ncua peb tuaj yeem tau txais qhov tam sim no.

Yuav tsum tau tam sim no = 1.25/R

Kuv muaj 8 LED hauv kab thiab 6 pawg ntawm lawv piv txwv li 48 LEDs.

Txhua pab pawg xav tau ib puag ncig 30mA ntawm 24V vim tias (3V ib qho coj x 8LEDs)

Tam sim no tag nrho yuav yog 180mA.

Los ntawm kev siv 6.8 Ohm resistor peb tuaj yeem tau txais ib puag ncig 183mA uas txaus rau peb xav tau.

Cov zis tau txuas nrog LED cov tswv yim los ntawm kev siv cov xov hlau ncaj qha rau txhua qhov tsis zoo thiab qhov zoo ntawm LED teeb.

Kauj Ruam 5: Cov ntawv thov

Qhov teeb pom kev txias no tuaj yeem siv rau ntau lub hom phiaj thiab qhov txwv yog tus neeg siv khoom muaj tswv yim.

1. Kuv siv qhov no ua lub teeb duab rau faib lub teeb.
2. Macro photography teeb
3. Backlit duab thav duab
4. Backlit Logo
5. Backlit kos duab siv ntau lub teeb ci