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  • Enterprise 3.3.153更新服务器属性都消失了

    ......电子邮件,警告阈值......以上来自于谷歌翻译以下为原文Update my softwares in hopes to use the AD integrations... the web

    2018-10-16 08:38

  • 小型充电器/适配器的功率不断被提高会面临什么难题?

    电子设备的电池容量越来越大、充电时间越来越短,导致充电器尺寸被放大,但是面临温升性能的挑战又该如何解决?请问在同等容量、不同耐压条件下的电容体积对比,会有何不同呢?

    2021-03-11 06:15

  • 如何去实现LED照明应用的无闪烁调光?

    如何去实现LED照明应用的无闪烁调光?

    2021-05-10 06:49

  • 3165多少个天线?

    你好助手,我期待着买一台新的台式笔记本电脑。我最喜欢的选择是没有包含wifi卡。在联系制造商客户支持后,他们告诉我3165(1x1)或9260(2x2)是正确的。桌面外壳上只有一个预钻孔,用于安装外部天线。所以我会去3165。现在我在3165的照片上看到有两个连接器插头(Aux和Main)。所以为什么?我不明白。我的假设是购买3165 +一根天线电缆(MHF 4到RP-SMA)+外部RP-SMA天线(6dbi)。并做了。是对的吗?这是否意味着9260然后需要双重(2根天线电缆+ 2根外部天线)?提前感谢您的帮助。以上来自于谷歌翻译以下为原文Hello helpers, I am looking forward to buy a new desktop laptop. My favourite choice does not have a wifi card included.After contacting manufacturers customer support they told me that 3165 (1x1) or 9260 (2x2) is the right one.There is only one pre-drilled hole in the desktop housing to install a external antenna.So I would go for 3165. Now I saw on the pictures of 3165 that there are two connector plugs (Aux and Main). So, why?I do not understand. My assumtion was to buy 3165 + one antenna cable (MHF 4 to RP-SMA) + external RP-SMA antenna (6dbi).And done. Is that right? And does it mean, that 9260 then requires everything in double (2 antenna cables + 2 external antennas)? Thank you in advance for helping.

    2018-11-16 11:20

  • 手机快速充电原理

    智能手机对于宽带无线通信、图像处理等多方面的需求导致实际耗电呈指数增长。未来5G通信带宽将比4G增加10倍,4K/8K等高清视频技术逐渐应用,CPU、GPU等运算电路处理能力不断增强,这一切都将导致智能手机整体能耗需求将成指数增长。电池容量呈线性缓慢增长,能耗需求缺口逐渐拉大。电池技术迟迟无法突破,成为终端使用的最大瓶颈。电池容量增长缓慢,每年线性提升约15%,而能耗则是呈指数增长,能耗需求与电池性能的差距愈发明显。电池性能曲线将与能耗需求曲线严重脱轨,提高充电速度成为电池续航的关键解决方案,快速充电已成为市场竞争热点。一、快速充电原理快速充电技术将成为手机标配。在电池容量无法迅速取得突破,手机用电量又飞速增长的前提下,快速充电技术普及尤为必要。中国信息通信研究院对快速充电的定义是:30分钟充电进入电池的平均电流大于3A或者30分钟充电电量大于60%。快速充电系统包括快充标准,快充电源适配器,接口E-marker芯片,充电线缆,手机快充芯片,电池等多个部分。各部分都必须针对不同标准专门设计,才能实现快充功能,并且保证充电安全。

    2019-06-24 08:06

  • 延长导通时间为什么可以减小输入电容容量?

    有哪几种方法可以设计连续输出功率?内存备份功率有哪些要求?输入电压下降时的功率输出是怎样的?怎样去选择直流输入总线滤波电容值?

    2021-04-14 06:48

  • 请帮我理解戴尔XPS 9570上的“颜色准确度”设置

    你好我拥有的我最近买了戴尔XPS 9570笔记本电脑。它配备了一个伟大的超高清显示器,据称可以覆盖100%的AdobeRGB色彩空间(以及其他)。我正在使用Windows 10的最新官方版本。我还使用Adobe Lightroom Classic CC进行业余摄影编辑。笔记本电脑附带Dell Premier Color软件,用于控制显示器,允许您切换色域模式,白点等。它似乎也在幕后安装了一些工厂校准ICC配置文件,用于各种设置组合。如果您连接了硬件X-Rite i1Display Pro校准器,它也可以使用它。它还使用Intel UHD图形控制中心,提供“颜色精确度”开/关选项。根据我在本论坛上的快速研究和Ronald_Intel的帖子,我了解到它与xvYCC色彩空间有关。我能看到什么翻转“颜色准确度”开​​关对操作系统看似所有内容的显示效果会立即产生非常明显的影响。随着“色彩准确度”的开启,色域似乎显着缩小,特别是在红色区域。我在Lightroom中查看的照片看起来有所不同,我强烈认为(因为我还没有校准器),显示器校准软件显示的用于校准器硬件测量的色块确实看起来确实看起来不同。我想只有“颜色精确度”开关的一个特定设置使工厂的ICC配置文件准确无误,使校准完全失控。我想要的是我想充分利用我用戴尔XPS获得的100%AdobeRGB甜蜜面板来满足我的Adobe Lightroom照片编辑需求。我想要我的ICC配置文件:工厂提供的以及我将来制作的那些(在我得到校准器之后)尽可能准确地工作。我不希望我的视频驱动程序/软件/功能干扰我的笔记本电脑屏幕能够尽可能完整和准确地显示AdobeRGB空间。我很难理解我不太确定“颜色准确度”开​​关的作用。我可以看到颜色变得更加柔和和柔和(你可以认为它确实更准确)一旦我启用它但我想知道在后台实际发生了什么样的转换/映射。我所知道的一点点让我觉得仅仅在Paint,Photoshop或任何其他非视频应用程序的RGB空间中显示一个简单的100%红色,0%绿色,0%蓝色样本将产生明显的“较少红色”输出显示器能够以及“色彩准确度”关闭的可能性。所有与AdobeRGB相关的工作方式是什么? xvYCC甚至比AdobeRGB还要宽吗?或者“色彩准确性”是否使所有东西都比仅需要兼容的xvYCC视频内容更“哇”和“流行”?我的外行人对宽色域和更多色彩位深度的理解并不是要“缩小”现有内容,以使色调渐变更加平滑和细微,消除条带等。总结一下:哪个“色彩准确度”我应该使用Lightroom设置,打印校对/颜色匹配以及校准显示器以满足我的照片编辑需求吗?以上来自于谷歌翻译以下为原文Hello What I haveI've recently got a Dell XPS 9570 laptop. It is equipped with a great UHD display that supposedly covers 100% AdobeRGB color space (among others). I'm using the most recent official build of Windows 10. I also use Adobe Lightroom Classic CC for amateur photography editing. The laptop came with Dell Premier Color software for controlling your display that allows you to switch color gamut modes, white point, etc. It also seems to install some factory calibration ICC profiles behind the scenes for various setting combinations. If you have a hardware X-Rite i1Display Pro calibrator connected, it can put that to use as well. It also uses Intel UHD Graphics Control Center that offers the "Color accuracy" on/off option. From my quick research and posts by Ronald_Intel on this forum I learned it is related to the xvYCC color space. What I can seeFlipping the "Color accuracy" switch has an immediate and very noticeable effect on how seemingly everything gets displayed by the OS. With "Color accuracy" on, the color gamut seems to narrow down significantly, especially in the reds region. My photos viewed in Lightroom look different and, I strongly assume (as I don't have a calibrator yet), the color patches displayed by the monitor calibration software for the calibrator hardware to measure would, most certainly, indeed look different, too. I imagine only one particular setting of the "Color accuracy" switch makes the factory ICC profiles accurate, throwing the calibration completely out whack in the other. What I wantI'd like to take the full advantage of that sweet 100% AdobeRGB panel I got with my Dell XPS for my Adobe Lightroom photo editing needs. I'd like my ICC profiles: both the factory-provided and the ones I'll make myself in the future (after I'll get that calibrator) to work as accurately as possible. I don't want my video driver/software/features interfering with my laptop screen's ability to display the AdobeRGB space as fully and as accurately as possible. What I struggle to understandI'm not really sure what the "Color accuracy" switch does. I can see the colors get more toned-down and subdued (you could argue it's, indeed, more accurate) once I enable it but I'd like to know what kind of conversion/mapping actually happens in the background. The little I know about it makes me think that merely displaying a simple 100% red, 0% green, 0% blue sample in an RGB space in Paint, Photoshop or any other non-video application will produce noticeably "less red" output that the display is capable of and what is possible with "Color accuracy" off. How does is all work in relation to AdobeRGB? Is the xvYCC indeed so much wider even than AdobeRGB? Or does "Color accuracy" make everything duller than needed only for the compatible xvYCC video content to "wow" and "pop"? My layman's understanding of wide gamut and more color bit-depth was not so much to "narrow down" the existing content as to make the tonal gradations more smooth and subtle, eliminate banding, etc. To sum it up: which "Color accuracy" setting should I use for Lightroom, print proofing/color matching and calibrating the display for my photo editing needs?

    2018-10-22 11:36

  • 常见稳压电源/DCDC转换电源/开关电源等电路有哪些

    常见稳压电源/DCDC转换电源/开关电源等电路有哪些

    2021-03-11 07:32

  • 6大常用电源设计电路,电源工程师必备知识宝典!

    。StackFET技术允许组合使用不太昂贵的、额定电压为600V的低压MOSFET和Power Integrations提供的集成电源控制器,这样便可设计出简单便宜并能够在宽输入电压范围内工作的开关电源。图

    2021-02-05 16:43