色老板在线精品免费视频

<optgroup id="bncdy"></optgroup>
<samp id="bncdy"><center id="bncdy"><xmp id="bncdy">
<ruby id="bncdy"><i id="bncdy"></i></ruby>

        <strong id="bncdy"></strong>
        <acronym id="bncdy"><sup id="bncdy"><nav id="bncdy"></nav></sup></acronym>

        Shenzhen Grande Electronic Linkedin Page
        Shenzhen Grande Electronic Co., Ltd logo
        E-mail us for a Quote:
        sales88@greattong.com
        Call us now:
        +86-755-83261869

        Technical Article


        What is the symbol for direct current?

        Time:2019-06-13 17:23:01 Click:

         

         

         

         

        PS:

         

        The symbol of direct voltage: V-;

        The symbol of alternating voltage: V~ ;


        Previous:What is the difference between a relay and a fuse and a circuit breaker?

        Next:Why should a circuit have low output impedance and high input impedance?


        Request an Official Quote

        Questions

        E-MAIL

        File Upload

        Upload a list of files

          Please upload your Gerber files and BOM. You can upload an unlimited number of files as long as the total size of all files does not exceed 20 MB. To ensure you receive your official quote in less than 24 hours, please include the quantity of circuit boards for which you would like a quote.

          If you require that we sign a Non-Disclosure Agreement (NDA), please send it to us prior to sending your files and we will be happy to accommodate.

           
          Home About Us Services Quality Pb-Free News Contact Us


          Copyright ® 2017,Shenzhen Grande Electronic Co., Ltd. All Rights Reserved. 中文站 Sitemap

          色老板在线精品免费视频

          <optgroup id="bncdy"></optgroup>
          <samp id="bncdy"><center id="bncdy"><xmp id="bncdy">
          <ruby id="bncdy"><i id="bncdy"></i></ruby>

              <strong id="bncdy"></strong>
              <acronym id="bncdy"><sup id="bncdy"><nav id="bncdy"></nav></sup></acronym>