Okay, "USB Type" usually refers to the "physical connector shape and size" of a USB port or cable. There are several major types currently in use:
1. "USB Type-A:"
"Description:" The most common rectangular connector, recognizable by its flat top edge. This is what you typically find on computers, laptops, tablets, and many peripherals.
"Usage:" Primarily for host devices (like computers) connecting to peripheral devices (like keyboards, mice, printers, external drives). It's generally not reversible (you can only plug it in one way).
2. "USB Type-C (USB-C):"
"Description:" A newer, smaller, and more versatile connector with a symmetrical,梯形 (ladder-shaped or trapezoidal) design. It's much smaller than Type-A and reversible (can be plugged in either way up).
"Usage:" Found on modern smartphones, tablets, laptops, desktop computers, game consoles, and various peripherals. It supports higher power delivery and faster data transfer rates than older USB standards. It can also supply power to charge devices.
3. "USB Type-B:"
"Description:" A square connector, often found on larger peripherals like printers, external hard drives, and some monitors (less common now).
"Usage:" Typically used as a device connector, plugging into a host's Type
相關(guān)內(nèi)容:
隨著華為Mate9的殺入,充電大電流方向又多了一名猛將。以高通為代表的高電壓低電流方案因發(fā)熱等各種問(wèn)題,被些許廠商棄用,高通QC4.0也已經(jīng)推出,融合了最新的PD規(guī)范,就是為了應(yīng)對(duì)這些問(wèn)題。所以以后充電的大一統(tǒng)趨勢(shì)基本就是低電壓高電流了。
一、前言
那么一根Type-c線材能過(guò)2A電流肯定不夠用了,像VIVO、一加、華為等廠商已經(jīng)將數(shù)據(jù)線電流設(shè)計(jì)到5A。之前跟大家分享過(guò)2A電流下的內(nèi)阻和壓降測(cè)試,大部分線材的壓降都還能接受。那么,到了3A電流,內(nèi)阻大的線材壓降就不堪入目了,甚至可以講大部分線材根本過(guò)不了3A電流。小電流時(shí)代,內(nèi)阻大點(diǎn)影響倒不是很大;大電流時(shí)代,內(nèi)阻一定要?。∵@次給大家?guī)?lái)3A電流下的若干TYPE-C線材的內(nèi)阻和壓降測(cè)試,幫大家找出支持3A及以上電流的數(shù)據(jù)線,希望大家喜歡。
二、測(cè)試
測(cè)試方案跟之前保持一致,只是將EBD-USB+電流控制在3A。
一加三 0.0617Ω 0.185V

華為Mate9 0.0637Ω 0.191V

Gigaset 面條線 0.0895Ω 0.2682V

CHOETECH 3A 0.0946Ω 0.2837V

魅族 USB 3.1線 0.1011Ω 0.3032V

ZUK 面條線 0.1015Ω 0.3043V

華為 某平板線 0.1024Ω 0.307V

華為P9 0.1168Ω 0.3501V

Foner USB3.1 0.1178Ω 0.3532V

CHOETECH USB3.1線 0.1227Ω 0.3829V

公牛 0.1356Ω 0.4065V

Aukey 0.1448Ω 0.4339V

CHOETECH 2.4A 0.1669Ω 0.5005V

樂(lè)視 樂(lè)2系列 0.1999Ω 0.5993V

CHOETECH USB3.0尼龍 0.2003Ω 0.6008V

三星NOTE7 0.226Ω 0.6776V

倍斯特 面條線 0.2318Ω 0.6949V

CHOETECH面條線 0.2486Ω 0.7453V

總結(jié)以上數(shù)據(jù)如下表格(序號(hào)即排名):


三、總結(jié)
①3A下壓降最高的達(dá)到了0.7V以上,很顯然這種線材充電的時(shí)候是過(guò)不了3A電流的,內(nèi)阻太大。
②一加3DASH數(shù)據(jù)線榮登榜首,DASH名不虛傳。
③一加3線和華為Mate9線本身就是大電流設(shè)計(jì),內(nèi)阻低也是情理之中,排行一二名,必定能過(guò)3A電流。
④Gigaset面條線倒是讓我意外,不論是2A還是3A電流,性能都不錯(cuò),值得推薦的扁線。
⑤CHOETECH 3A數(shù)據(jù)線本身就以3A電流為賣點(diǎn),理所當(dāng)然能過(guò)3A電流。
⑥魅族、ZUK、華為P9、FONER線也屬于好線,過(guò)3A電流應(yīng)該問(wèn)題不大。
⑦其他線材內(nèi)阻就略大了,本文不做具體評(píng)價(jià)。

微信掃一掃打賞
支付寶掃一掃打賞