如何为我的设备选择Micro USB电缆? -- htc-droid-incredible 领域 和 battery 领域 和 charging 领域 android 相关 的问题

How to choose micro USB cable for my device?


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18
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问题

中文

插头肯定看起来像任何旧的微型USB插头。另外一条电缆(如我数码相机的电缆)是否为电池充电,或者我需要专为我的手机(令人难以置信)而设计的电缆

english

The plug sure looks like any old micro USB plug. Will another cable (like the one from my digital camera) work to charge the battery, or do I need one specifically designed for my phone (incredible)

        
 
 

回答列表

3
 
vote

编辑:理论证明正在测试它,因此在购买USB充电电缆时,恢复正好在最新中。

已晚,我注意到我的华为荣誉6器件充电并决定更换USB充电电缆。我买了这些 Tronsmart Cables ,价格与预算电缆相当。这些用于充电(提供最佳充电)28 AWG的20 AWG厚度(更薄的厚度不会影响数据传输速度)。图片下面的产品

输入图像描述

性能:我有两个设备三星注2和华为荣誉6,均配有OEM充电器和OEM电缆(近乎一岁)。使用OEM电缆和围栏电缆测量的充电电流非常令人鼓舞

  • 三星注2带OEM电缆 - <强大> 1100 mA ,带托架电缆 - 1900 ma
  • 华为荣誉6带OEM电缆 - 550 ma ,带托架电缆 - 1750 ma

注意:请确保您未结束购买 CCA (铜包铝芯)代替铜缆。与铜导线相比,前者相对脆,导电性较低,与铜导线相比

相比

标准

  • USB标准3.0在10 W:5 V的下列标准,2 a for 智能手机和平板电脑
  • 电池充电修订版1.2 铺设" 标准,用于从USB端口向电池充电的正确方法"
  • 美国线尺(awg)是电缆厚度的参考。在该系统中,<强>较大的数字表示较薄的电线。 USB规范上面参考20,22,24,26和28的AWG数,

这些标准是为了确保适当的<强大>电压和电流可供选择,选择右USB电缆的选择是基于这些,以提供正确的电力收取


这适用于所有Android手机的设备作为示例(参见结束的注释)

在充电时,所有USB电缆都是

USB电缆的选择取决于:

  • 设备它意味着收取
  • 电缆长度
  • 电缆的厚度在AWG(外部,它们看起来相同,但重要的是内部电导体厚度)。标准制作的USB电缆标记为显示厚度,例如,

    28AWG/2C and 24AWG/2C 28AWG/1P + 24AWG/2C

意思是

第一代码通常是数据信号对的规范,通常为28AWG。 "2C" 是指2导体,"1P" 或"1PR" 表示1对。 "2c" 和"1p" 基本相同。

重要的部分是第二代码,,它是配电对与解决方案相关的)的规范

在我们介绍如何根据这些因素选择如何选择之前,快速回复基本电气化会有所帮助:

  Ohm's Law  Current = Voltage divided by Resistance  Resistance = Length  of cable divided by Area of cable (ignoring resistivity)  Power = Voltage multiplied by Current   

这些方程式意味着什么?

电流承载能力取决于电阻,电压相同。

电阻与导线的面积成反比(较少的区域=更薄的线=更多电阻=较少的电流)

电阻与长度成比例(更长的电缆=更多电阻,反之亦然)

<强>电源又取决于电缆的长度和厚度(影响电阻)和电压

在螺母外壳中,引用 USB电缆电阻:为什么手机/平板电脑可能会充电慢

如果您要使用售后市场替换电缆,最好看看您是否可以找到带有最厚可能导电的电缆,用于 Power 。如果是不可能的话,坚持短(到非常短)的长度,就像始终有效一样。

电源(电压时间电流),厚度,短长度是定性的,需要有数字选择右电缆。为此,您需要知道,首先,<强大>电源 - 是指设备的充电器等级。如上所述,您的设备是"令人难以置信" 和充电器for htc Droid令人难以置信的将其显示为 1a

接下来,<强>电压 - 用于<强> 5V输出,USB规格要求电压保持在5%以内(即可接受的电压下降0.25V)。一些供应商提供略高的电压额定值

....一些供应商已经实现了问题(电压下降的),并决定将输出电压推向5.1V或5.2V,仍然在USB规范内,但允许额外的0.1-0.2V电压下降。这是一个潜在的良好特征,因为它意味着电缆上的要求略微放松(即,即使是0.7V电压降)。

选择右电缆

你知道电源和电压,只剩下的东西是知道<强>厚度和USB电缆的长度。为此引用表(在表的电流额定值下,接触电阻,这是真实的寿命,没有接触电阻是单独提供电缆的效果)通过选择"非红色" 颜色(绿色或黄色)来寻找最大电缆长度/厚度组合,从而可以安全地选择,如箭头所示:

  • 24 AWG电缆长度为2米
  • 26 AWG电缆长度为1米

输入图像描述

此电缆规格的谷歌(通常电缆通常出售为24/28 AWG,在这种情况下选择最多1米长)并从知名的供应商处购买。完成!!

notes

  1. 您可以自己计算使用欧姆的法律的电压降。表格是为了方便起见。使用表的有用指针:

    • 如果您的充电器的确切评级不可用,请选择1.35 A,选择下一个更高的评级或删除发布欧姆的法律
    • 表中
    • 绿色颜色表明,值符合USB标准。
    • 黄色而黄色区域数字不会严格符合USB -0.25V的最大下降,可能仍然足够的充满电荷,因为许多设备可以接受稍微丢失电压不损害充电
    • 红色不符合标准。不要使用
    • 对于较低电流额定值高达1.5A,选择黄色区域长度的选择可能仍然足够的充电,因为许多设备可以接受稍微损失的电压损失而不会损失充电。对于更高的电流(超过1.5V),您需要更保守,所以您应该选择绿色。
  2. 对于平板电脑用户:您只需要选择落在"绿色" 区域中的内容,因为电压降灵敏度更高。将此作为一个示例 google nexus 7充电< / a>

  3. 我绝不与源隶属于源头,我认为,在呈现的详细逻辑和与其他推荐短电缆的其他来源很好的情况下,它不可信,没有适当的理由。 这是一个倾向于进入技术细节的教育读取

 

Edit: Proof of theory is in testing it, so the reults are right on top to encourage making an informed decision while shopping for USB charging cables.

Of late, I noticed that my Huawei Honor 6 device was charging slower and decided to replace USB charging cable. I bought these Tronsmart cables at a price comparable with budget cables. These are 20 AWG thickness for charging (provide best charging) 28 AWG for data (thinner thickness doesn't affect data transfer speeds). Picture below from product

enter image description here

Performance: I have two devices Samsung Note 2 and Huawei Honor 6 both with OEM chargers and OEM cables (nearly a year old). Charging current as measured using OEM cables and Tronsmart cables is very encouraging

  • Samsung Note 2 with OEM cable - 1100 mA, with Tronsmart cable - 1900 mA
  • Huawei Honor 6 with OEM cable - 550 mA, with Tronsmart cable - 1750 mA

Caution: Please make sure you don't end up buying CCA (Copper Clad Aluminum Cables) instead of Copper cables. Former are comparatively brittle and have lower conductivity compared to Copper conductors


Standards

  • USB standard 3.0 in lays down standards of 10xc2xa0W: 5xc2xa0V, 2xc2xa0Axc2xa0 for smartphones and tablets
  • Battery Charging Revision 1.2 lays down " standard for establishing the proper way to charge a battery from a USB port "
  • American Wire Gaugexc2xa0(AWG) is a reference for thickness of cables. In this system,xc2xa0larger numbers indicate thinner wires. USB specification above makes reference to AWG numbers of 20, 22, 24, 26 and 28,

These standards are to ensure that appropriate Voltage and Current are available to the device being charged and selection of right USB cable is based on these to deliver right amount of Power to charge


This is applicable for all Android phones- OP's device is taken as an example ( see Notes at end )

All USB cables are NOT the same when it comes to charging

Selection of USB cables depends on:

  • Device it is meant to charge
  • Length of cable
  • Thickness of cable in AWG ( externally, they may look the same but what matters is the electrical conductor thickness internally ). USB cables of standard make are marked showing the thickness, for example,

    28AWG/2C and 24AWG/2C or 28AWG/1P + 24AWG/2C

This means

The first code is normally the specification of the data signal pair, which is normally 28AWG. "2C" means 2 conductors, and "1P" or "1Pr" means 1 pair. "2C" and "1P" are basically the same.

The important part is the second code, which is the specification of the power distribution pair (relevant to the solution here)

Before we get into details of how to select based on these factors, a quick recap of basic electrify would help:

Ohm's Law  Current = Voltage divided by Resistance  Resistance = Length  of cable divided by Area of cable (ignoring resistivity)  Power = Voltage multiplied by Current 

What do those equations mean?

Current carrying capacity depends on resistance, for the same Voltage.

Resistance is inversely proportional to the area of the wire ( Less area = Thinner Wire = More Resistance = Less Current )

Resistance is directly proportional to length (Longer cable = More resistance and vice versa )

Power in turn is therefore dependent on length and thickness of cable (affecting resistance) and Voltage

In a nut shell, quoting from USB Cable Resistance: Why your phone/tablet might be charging slow

if you are going to replace your cable with an aftermarket cable, it would be best to see if you can find a cable with the thickest possible conductors for the power. If that isnxe2x80x99t possible,xc2xa0stick with short (to very short) lengths, as that always works.

Power (Voltage times Current), thickness, short lengths are qualitative and need to be in numbers to choose the right cable. For this you need to know, firstly, Power- Refers to the charger rating of your device . Your device as mentioned is "incredible" and Charger for HTC Droid Incredible shows it to be rated for 1A

Next, is Voltage- For axc2xa05V output, the USB specification demands that the voltage remains within 5% (i.e. an acceptable voltage drop of 0.25V). Some vendors provide a slightly higher Voltage rating

.... some vendors have realized the issue (of Voltage drop ) and decided to push the output voltage up to 5.1v or 5.2v, which is still within USB specification but allows for an extra 0.1-0.2v voltage drop. This is a potentially nice feature as it means the requirements on the cables are slightly relaxed (i.e. maybe even 0.7v voltage drop is tolerable).

Choosing the right cable

You know the Power and Voltage , only thing left is to know the thickness and length of USB cable. For that refer to the tables (choose under the current rating of table With Contact Resistance, which is real life, without contact resistance is to give the effect of cable alone) and look for maximum cable length / thickness combinations by choosing "non red" color (green or yellow) which tell you that you can safely choose, as indicated by arrows:

  • 24 AWG cable upto 2 metres in length
  • 26 AWG cable upto 1 metres in length

enter image description here

Google for this cable specs (normally cables are commonly sold as 24/28 AWG ,in which case select maximum 1 meter length ) and buy from a reputed vendor. Done!!

Notes

  1. You can calculate the voltage drop using Ohm's law yourself. Tables are for convenience. Helpful pointers on using the tables :

    • If the exact rating of your charger is not available, say 1.35 A, select the next higher rating or work it out issuing Ohm's law
    • Green color in table indicates, that the values are compliant to USB standard.
    • Yellow While yellow-zone figures are not going to be strictly compliant with the USB -0.25V maximum drop, it may still be sufficient for a full charge as many devices can accept somewhat more loss of voltage without detriment to charging
    • Red Non compliant to standards. Don't use
    • For lower current rating upto 1.5 A, selection of yellow zone lengths may still be sufficient for a full charge as many devices can accept somewhat more loss of voltage without detriment to charging. For higher currents (more than 1.5V), you need to be more conservative, so you should choose towards the green.
  2. For Tablet users: you need to choose what falls in "green" zone only, since Voltage drop sensitivity is higher. See this as an example Google Nexus 7 Charging

  3. I am in no way affiliated with the source and I believe it to be credible given the detailed logic presented and relates well with other sources which recommend short cables, without proper justification. It is an educative read for those inclined to get into technical details

 
 
       
       
9
 
vote
vote
最佳答案
 

任何具有充电手机充电功能的微型USB电缆才能巧妙地确切这一点。

我在 usb powering 上。来源是2005年,但问题仍然是相同的。

一些电缆由于其他电缆通过电缆流过电缆而充电,而其他电缆则为其他电缆。

 

Any Micro USB cable that has the capability of charging your phone does excactly that.

I found a link on USB powering. The source is from 2005 but the issue remains the same.

Some cables do charge your device due to a sufficient power flow through the cable while others don't.

 
 
     
     
1
 
vote

我的无技术答案是没有。我有一个Microusb AC适配器,用于蓝牙耳机,对我的耳机充电,但不会因为某种原因而无法向手机充电。我还有一个可伸缩的MINIUSB电缆连接到计算机,它很好,但它也无法为我的手机充电。

 

My un-technical answer is no. I have a microUSB AC Adapter for a bluetooth headset that charges my headset just fine but won't charge my phone for some reason. I also have a retractable miniUSB cable to connect to the computer with and it is fine for data but it also fails to charge my phone.

 
 
   
   
1
 
vote

我会说这取决于电缆,但你有一个公平的机会让你的电话收费。

我已经用3种类型的USB电缆测试了HTC Hero(通过我的口袋硬盘和带有我的DVD驱动器购买的通用,使用我的DVD-Drive购买),2种GPS充电器和一种类型的GPS汽车充电器。所有工作都很好。 :)

 

I'd say it depends on the cable, but you have a fair chance to get your phoned charged.

I've tested HTC Hero with 3 types of USB cable (universal, bought with my pocket hdd and bough with my dvd-drive), 2 types of a GPS charger and one type of a GPS car charger. All worked well. :)

 
 
0
 
vote

对于它的价值,我在亚马逊上购买了一个通用的Microusb电缆,如2美元,这是为BlackBerry用户的广告,它在我令人难以置信的情况下工作。我在办公室用它作为我的充电器。

 

For what it's worth, I purchased a generic MicroUSB cable on Amazon for like $2, which was advertised as being for BlackBerry users, and it works just fine on my Incredible. I use it as my charger at the office.

 
 

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