Advanced USB Device Charger: 4 Kauj Ruam

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

1A @ 30V) "," saum ": 0.492," sab laug ": 0.3984375," qhov siab ": 0.052," dav ": 0.19140625}, {" noteID ":" NM18S83FH9I3TJK "," tus sau ":" VV. Core. ", "ntawv": "LED nrog Resistor (390R, LED tam sim no txwv rau 8mA kom tsis txhob muaj ntau qhov poob los ntawm LED, LED txuas nrog 5V tso tawm)", "sab saum toj": 0.36, "sab laug": 0.171875, "qhov siab ": 0.256," dav ": 0.17578125}, {" noteID ":" NBYZRM8FH9I3TJL "," tus sau ":" VV. Core. "," Text ":" Output Cap (100uF 6, 3V LOW ESR) "," top ": 0.452," sab laug ": 0.64453125," qhov siab ": 0.108," dav ": 0.20703125}, {" noteID ":" NT4B8QWFH9I3TJN "," sau ":" VV. Core. "," Ntawv ":" USB Con "," saum ": 0.674," sab laug ": 0.23828125," qhov siab ": 0.146," dav ": 0.6640625}, {" noteID ":" N4FZOQ8FH9I3TJO "," sau ":" VV. Core. "," ntawv ": "Hloov fais fab", "sab saum toj": 0.074, "sab laug": 0.1015625, "qhov siab": 0.174, "dav": 0.19140625}, {"noteID": "NY7587JFH9I3TK0", "sau": "VV. Core.", "ntawv": "Rau Cov Roj Teeb (2xAA Nihm cov roj teeb rov los lossis alkaline (tsis tau hais qhia, lawv muab tsis txaus tam sim no, thiab lawv tsis zoo ib puag ncig …)", "saum": 0.014, "sab laug ": 0.02734375," qhov siab ": 0.26," dav ": 0.0546875}]">

Nrog qhov me me no koj tuaj yeem them yuav luag txhua lub cuab yeej uas tau them ntawm USB, zoo li iPods lossis xov tooj ntawm tes, nrog tsuas yog ob AA-Cells!

Kauj Ruam 1: Muaj Lub Tswv Yim

Yog li vim li cas kuv thiaj yuav tsum tsim qhov no?

Qhov laj thawj yog qhov yooj yim heev: Kuv tau dhuav cov roj teeb uas tsis muaj dab tsi (Ipod, lub xov tooj ntawm tes) thaum kuv tab tom mus. Thiab kev daws teeb meem nrog tus tswj hwm txoj kab zoo li "7805" yog qhov tseeb yooj yim heev, tab sis tsis muaj txiaj ntsig zoo, vim tias: thawj zaug koj xav tau cov khoom siv uas muab txog 3 volts ntau dua qhov koj xav tau rau usb thiab qhov thib ob feem ntau qhov sib txawv ntawm qhov hluav taws xob thiab qhov hluav taws xob tso tawm tau poob hauv tshav kub. Kev daws teeb meem los ntawm Linear Technology. Qhov tseem ceeb tshaj plaws ntawm tus cicuit nthuav tawm hauv cov kauj ruam tom ntej yog "LT1301". Nov yog cov kauj ruam me me hloov pauv los tsim kev hloov pauv lub zog siv hluav taws xob nrog tsuas yog ob peb yam sab nrauv.

Kauj Ruam 2: Qhov Koj Xav Tau

Koj xav tau dab tsi:

-> LT1301 thiab lub qhov (ic socket) (8DIP) -> 2 lub kaus mom hluav taws xob nrog! ESR qis (6, 3V 100uF) -> ib qho inductor nrog LOW heev! DCR (ib puag ncig 0, 03R) nrog 10uH yuav tsum muaj peev xwm los tswj cov kev hloov pauv ntawm kwv yees li 1, 5 Amperes. -> ib qho schottky rectifier zoo li "SB130" lossis "1N5817" (qhov tseem ceeb yog tias koj tsis tuaj yeem tau txais ib ntawm ob qhov kev thov kho qhov sib txawv: qhov poob qis rau qhov poob qis, muaj peev xwm hloov pauv tau sai thiab nws yuav tsum muaj peev xwm tuav tau tam sim no ntawm 1 Ampere.) - > Ib qho hloov (qhib/tawm), txuas USB, lub rooj sib tham hauv Circuit Court, LED nrog tus tiv thaiv (txwv tsis pub coj tam sim no mus rau 2mA !, tsis txhob xoob koj lub mA los ntawm kev tso lawv hla lub LED) thiab tsis txhob hnov qab tus tuav lub roj teeb

Kauj Ruam 3: Lub Circuit Court nthuav dav

Dab tsi tseem ceeb thaum tsim?

Cov tswv yim hluav taws xob yuav tsum nyob ze li sai tau kom tus pin 6 (Vin) ntawm LT1301! Khaws tag nrho cov cicuit taug qab luv luv! Ncaj ncaj Pin1 (GND) Pin8 (PGND) thiab Pin3 (Kaw) togheter thiab txuas rau hauv av. Tsis txhob siv lub sijhawm ntev los txhawm rau tiv thaiv kev puas tsuaj ntawm cov khoom siv los ntawm kev ua kom sov dhau … Rau cov ncauj lus ntxaws ntxaws ntawm cov khoom siv ntawm lub rooj tsav xwm hauv Circuit koj tuaj yeem siv koj tus kheej kev muaj tswv yim …

Kauj ruam 4: Tiav lawm

Yog li tam sim no nws ua tiav, tab sis ua ntej txuas nws rau ib qho khoom siv usb, nco ntsoov tias nws ua haujlwm tau zoo! (qhov hluav taws xob yuav tsum yog 5 volts, LED tsuas yog yuav tsum ci, thiab lwm yam …) Thaum txhua qhov raug tshuaj xyuas thiab koj paub tseeb tias txhua yam ua haujlwm koj tuaj yeem ua tau (yog tias koj nyiam nws) pib tso kub yaj ib puag ncig nws raws li kev tiv thaiv. Yog tias koj tsis nyiam kub yaj koj tuaj yeem tso lub cuab yeej rau hauv lub thawv sib tw lossis txhua yam koj xav tau … nyob rau sab laug ntawm daim duab koj pom daim ntawv laus dua ntawm sab xis koj pom qhov tshiab me dua, txhim kho dua tshiab Qee cov ntaub ntawv txuj ci: tswv yim: 1, 5 txog 3 voltsOutput: 5 Volts @ 200mA max. (tiag tiag txaus los them lub iPod mini lossis lub xov tooj ntawm tes, ntseeg kuv;-)) Watts thiab ua haujlwm tau zoo: Hauv: 0, 95W ntawm 2, 5 VOut: 0, 875W ntawm 5 Vloss: 0, 075W8 feem pua poob 92% kev ua tau zoo