Cov txheej txheem:
- Kauj Ruam 1: Khoom
- Kauj ruam 2: Npaj Transistor
- Kauj Ruam 3: Ntxiv Capacitor
- Kauj Ruam 4: Txuas Cov Ports
- Kauj Ruam 5: Qhov Taw Qhia LED
- Kauj Ruam 6: Txuas ntxiv
Video: 12v rau USB Adapter 12v rau 5v Transformer (zoo rau Tsheb): 6 Cov Kauj Ruam
2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:31
Qhov no yuav qhia koj yuav ua li cas thiaj ua 12v rau USB (5v) adapter. Qhov pom tseeb tshaj plaws ntawm qhov no yog rau 12v lub tsheb hloov pauv, tab sis txhua qhov chaw koj muaj 12v koj tuaj yeem siv nws! Yog tias koj xav tau 5v rau lwm yam uas tsis yog USB, tsuas yog hla cov kauj ruam hais txog kev ntxiv USB chaw nres nkoj;)
Kauj Ruam 1: Khoom
Koj yuav xav tau
- inline fuse yas dhos
- 0.5 amp ceev tshuab fuse
- 2 xim sib txawv ntawm cov hlau (kom koj tsis txhob ສັບ ສົນ tom qab)
- L7805CV tus tswj hluav taws xob rau qis amps. Rau amps siab dua (ntau yam khoom siv ib zaug), siv TO220 (thiab lub fuse loj dua)
- ib 220uf 16v Capacitor.
- Poj niam USB chaw nres nkoj. Header boards yog txoj hauv kev zoo thiab yooj yim los ua qhov no.
- yog tias koj xaiv ntxiv LED, koj xav tau LED thiab qhov tsim nyog tiv thaiv rau 5V. Qhov no nyob ntawm koj qhov ntsuas LED. Ib qho LED yuav ua, ntawm no yog qhov tseem ceeb tshaj plaws rau LEDs: 1.2v = 220ohm, 1.6v = 180ohm, 2v = 180 ohm, 2.2v = 150ohm. Yog tias koj muaj qhov coj txawv txawv LED lossis xav ua kom nws ci dua, thov siv lub tshuab ntsuas qhov ntsuas no.
Cov ntaub ntawv ntau ntxiv ntawm fuse: koj tuaj yeem siv qhov ntsuas siab dua yog tias koj siv lub transistor sib txawv uas tuaj yeem siv amperage siab dua. Vim tias peb tso lub fuse rau ntawm 12v sab, (uas tuaj yeem sib txawv los ntawm 11.5-12.5 volts, peb yuav tsum siv tus nqi 2.5x me dua qhov peb xav tau ntawm peb sab USB. Yog li, yog tias koj xav tau 1.5 amps rau koj lub USB chaw nres nkoj, tom qab ntawd koj xaiv 0.6amp fuse, yog tias koj xav tau 2.5 amps ntawm 5v, koj xaiv 1 amp fuse, yog tias koj xav tau 3.75 amps, koj xaiv 1.5 amp fuse, thiab lwm yam). Tsis tas li, yog tias koj xav tiv thaiv koj lub Circuit tsis zoo, tsuas yog tso ib qho ntawm ob sab.
Tau kawg, koj tseem tuaj yeem siv qhov hloov pauv 12v-5v hauv koj lub tsheb, ua nws lub luag haujlwm hnyav, nruab nrab, lossis hnyav; lossis siv cov cuab yeej siv hluav taws xob zoo uas yog lub ntsiab lus los ua ke rau hauv lwm cov phiaj xwm lossis cov dej tsis zoo no, lub zog siab dua lwm txoj hauv kev nrog lub rhaub dej kub. Lawv zoo vim lawv cov ntsia hlau txuas.
Kauj ruam 2: Npaj Transistor
Tus Transitor muaj 3 tus pin, peb yuav hu lawv tus pin 1 2 thiab 3 (thaum koj tab tom saib lub transistor thiab nws lub dab dej kub / phaj hlau tab tom tig los ntawm koj). Tus Pin 2 yog GROUND (-). - Tus Pin 1 yuav txuas nrog lub hwj chim, hla los ntawm lub fuse. muaj qhov sib txawv me me ntawm cov tuav fuse, qhov loj me tsis muaj teeb meem ntev npaum li nws muaj qhov ntsuas tib yam. Tej zaum yuav muaj qhov sib txawv ntawm 1 $ lossis qee yam. - Tus Pin 2 yuav txuas nrog hauv av (-) yog li peb tsuas yog ntxiv xaim
Kauj Ruam 3: Ntxiv Capacitor
Lub capacitor yuav txuas nrog tus pin 2 thiab 3 (luv dua ceg mus rau hauv av / tus pin 2)
Lub luag haujlwm ntawm lub tshuab hluav taws xob no yog txhawm rau txo qhov pib lub zog-spikes.
Kauj Ruam 4: Txuas Cov Ports
USB yuav txuas nrog tus pin 2 (- hauv av) thiab 3 (5v +). Koj tuaj yeem siv daim duab no; siv daim duab hu ua "receptacle". Kuv tau siv khaws cov chaw nres nkoj USB, yog tias koj xaj lawv, lawv yuav tej zaum yuav yooj yim me ntsis rau cov laug. Qhov kom zoo dua qhov no yog kom muaj kev koom ua khub zoo ib yam li kuv muaj. Yog tias koj muaj ntau dua ib qho chaw nres nkoj, txuas txhua tus pins 1 rau pins 1 thiab pins 4 rau pins 4 * cov ncauj lus kom ntxaws txog vim li cas cov chaw nres nkoj tau xaim raws li lawv nyob, hla yog tias koj tsis quav ntsej * Txhawm rau khaws qhov hluav taws xob ruaj khov ntawm 5v, koj cov chaw nres nkoj yuav tsum nyob ua ke ntau dua li hauv kab ntawv txhawm rau ua kom qhov hluav taws xob tsis tu ncua. Qhov no txhais li cas? yooj yim heev koj paub tseeb tias xaim liab mus rau txhua qhov chaw zoo uas koj muaj (tsis txhob mus "xaim rau +" thiab tom qab ntawd "los ntawm rho tawm mus rau tom ntej +"). Puas yog txhua txoj hlua liab yuav tsum tawm ntawm tib qhov chaw? tsis yog, qhov tseem ceeb tsuas yog lawv txhua tus kov ib leeg.
Kauj Ruam 5: Qhov Taw Qhia LED
Yog tias koj tab tom ntxiv LED, tso nws tib txoj kev raws li lub tshuab hluav taws xob, tab sis muab cov khoom tiv thaiv tsim nyog hauv koob nrog nws (lub tshuab xam zauv no yuav qhia koj li cas, siv 5v raws li qhov hluav taws xob hauv 1 LED lub laij lej) (aka, ua rau nws txuas ntxiv ntawm ib qho ntawm ob txhais ceg). Koj yuav xav muab qhov no tso rau ntawm xaim kom koj tuaj yeem txav LED mus rau txoj haujlwm zoo dua tom qab.
Kauj Ruam 6: Txuas ntxiv
Kuv nyiam kaw cov kab hluav taws xob hauv cov kua nplaum kub, vim tias kuv pom cov kua nplaum kub yog qhov yooj yim thov thiab tshem tawm tau yooj yim, tab sis yuav tsis raug tshem tawm los ntawm kev sib tsoo.
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