<div class="entry-content">
    <div class="jetpack-video-wrapper"><span class="embed-youtube" style="text-align:center; display: block;"><iframe
                class="youtube-player"
                src="https://www.youtube.com/embed/Tfatk7wmnhs?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en&autohide=2&wmode=transparent"
                allowfullscreen="true"
                style="border: 0px; display: block; margin: 0px; width: 740px; height: 416.418px;"
                sandbox="allow-scripts allow-same-origin allow-popups allow-presentation"
                data-ratio="0.5627272727272727" data-width="1100" data-height="619"></iframe></span>
    </div>
    <div class="blog-content">
        Basics of DC bias effects and derating of multi-layer ceramic capacitors (MLCC). Acquiring impedance vs frequency curves for DC-biased ceramic capacitors via the two-port shunt-through measurement technique.
    </div>
    <div class="blog-content-chapters">
        <div>
            Chapters:
        </div>
        <ul class="chapters-list">
            <li class="chapters-list-item"><span class="chapters-time">00:00</span><span class="chapters-text">Intro</span></li>
            <li class="chapters-list-item"><span class="chapters-time">02:00</span><span class="chapters-text">Interactive Designs</span></li>
            <li class="chapters-list-item"><span class="chapters-time">02:28</span><span class="chapters-text">MLCC Basics</span></li>
            <li class="chapters-list-item"><span class="chapters-time">04:52</span><span class="chapters-text">Derating Basics</span></li>
            <li class="chapters-list-item"><span class="chapters-time">06:41</span><span class="chapters-text">Issues with Derating</span></li>
            <li class="chapters-list-item"><span class="chapters-time">08:23</span><span class="chapters-text">Mitigation</span></li>
            <li class="chapters-list-item"><span class="chapters-time">10:27</span><span class="chapters-text">2-Port Shunt-Thru Measurement</span></li>
            <li class="chapters-list-item"><span class="chapters-time">12:01</span><span class="chapters-text">DC Block & Bias Injector</span></li>
            <li class="chapters-list-item"><span class="chapters-time">14:30</span><span class="chapters-text">Test Board</span></li>
            <li class="chapters-list-item"><span class="chapters-time">15:28</span><span class="chapters-text">Measurement Set-Up</span></li>
            <li class="chapters-list-item"><span class="chapters-time">16:50</span><span class="chapters-text">Bode Analyzer Software Set-Up</span></li>
            <li class="chapters-list-item"><span class="chapters-time">18:36</span><span class="chapters-text">Test Capacitor</span></li>
            <li class="chapters-list-item"><span class="chapters-time">19:27</span><span class="chapters-text">0V DC Bias</span></li>
            <li class="chapters-list-item"><span class="chapters-time">20:52</span><span class="chapters-text">4V DC Bias</span></li>
            <li class="chapters-list-item"><span class="chapters-time">23:12</span><span class="chapters-text">12V DC Bias</span></li>
            <li class="chapters-list-item"><span class="chapters-time">25:06</span><span class="chapters-text">Outro</span></li>
            
    </div>
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://pms67.github.io/">Interactive Designs</a></li>
            <li class="links-list-item"><a href="https://www.youtube.com/watch?v=GjEmwmAI27U&ab_channel=Phil%E2%80%99sLab">2-Port Shunt-Through Measurements</a></li>
            <li class="links-list-item"><a href="https://www.youtube.com/watch?v=Zs3r5XI8FBY&ab_channel=Phil%E2%80%99sLab">Capacitor Measurement and Modelling</a></li>
            <li class="links-list-item"><a href="https://www.youtube.com/watch?v=kUruN6WBgSw&ab_channel=Phil%E2%80%99sLab">Capacitor Hardware Design Basics</a></li>
            
            <li class="links-list-item"><a href="https://fedevel.com/courses/advanced-digital-hardware-design">Advanced Digital Hardware Design course</a></li>
            <li class="links-list-item"><a href="https://fedevel.com/courses/mixed-signal-hardware-design-with-kicad">Mixed-signal Hardware Design course</a></li>
            <li class="links-list-item"><a href="https://fedevel.com/courses">FEDEVEL courses</a></li>
        </ul>
    </div>  
</div>

Ceramic Capacitor DC Bias Effects & Measurement - Phil's Lab #152

<div class="entry-content">
    <div class="jetpack-video-wrapper"><span class="embed-youtube" style="text-align:center; display: block;"><iframe src="https://www.youtube.com/embed/lVyxlw3rixI" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        Walking through one of the top PCB factories in China.
    </div>

    <div class="blog-content-chapters">
        <div>
            Chapters:
        </div>
        <ul class="chapters-list">
            <li class="chapters-list-item"><span class="chapters-time">00:00</span><span class="chapters-text">What is this video about</span></li>
            <li class="chapters-list-item"><span class="chapters-time">00:16</span><span class="chapters-text">Preparing panel</span></li>
            <li class="chapters-list-item"><span class="chapters-time">01:46</span><span class="chapters-text">Drilling</span></li>
            <li class="chapters-list-item"><span class="chapters-time">03:01</span><span class="chapters-text">Electroless plating</span></li>
            <li class="chapters-list-item"><span class="chapters-time">04:31</span><span class="chapters-text">Cleaning</span></li>
            <li class="chapters-list-item"><span class="chapters-time">06:04</span><span class="chapters-text">Photosensitive layer</span></li>
            <li class="chapters-list-item"><span class="chapters-time">08:54</span><span class="chapters-text">Electroplating</span></li>
            <li class="chapters-list-item"><span class="chapters-time">10:29</span><span class="chapters-text">Etching</span></li>
            <li class="chapters-list-item"><span class="chapters-time">12:36</span><span class="chapters-text">Solder mask</span></li>
            <li class="chapters-list-item"><span class="chapters-time">14:21</span><span class="chapters-text">Silkscreen</span></li>
            <li class="chapters-list-item"><span class="chapters-time">15:08</span><span class="chapters-text">PCB Testing</span></li>
            <li class="chapters-list-item"><span class="chapters-time">16:06</span><span class="chapters-text">Milling</span></li>
            <li class="chapters-list-item"><span class="chapters-time">16:37</span><span class="chapters-text">Inspection and packaging</span></li>
            <li class="chapters-list-item"><span class="chapters-time">17:39</span><span class="chapters-text">Making a multilayer PCB</span></li>
            <li class="chapters-list-item"><span class="chapters-time">20:04</span><span class="chapters-text">Baking PCBs</span></li>
            <li class="chapters-list-item"><span class="chapters-time">22:23</span><span class="chapters-text">X-Ray and alignment</span></li>
            <li class="chapters-list-item"><span class="chapters-time">23:28</span><span class="chapters-text">SMT Board assembly</span></li>
            <li class="chapters-list-item"><span class="chapters-time">26:30</span><span class="chapters-text">Through hole soldering</span></li>
            <li class="chapters-list-item"><span class="chapters-time">28:45</span><span class="chapters-text">Thank you for watching</span></li>
    </div>
    
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://www.pcbway.com/">Recorded in PCBWay</a></li>
            <li class="links-list-item"><a href="https://fedevel.com/courses">FEDEVEL Online courses</a></li>
        </ul>
    </div>  
</div>

Factory Tour in China - How PCB Is Made | PCBWay

<div class="entry-content">
    <div class="jetpack-video-wrapper"><span class="embed-youtube" style="text-align:center; display: block;"><iframe src="https://www.youtube.com/embed/T2WXlEwhI8k" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        Talking to a chip designer. Thank you very much Atchi Reddy Chavva
    </div>

    <div class="blog-content-chapters">
        <div>
            Chapters:
        </div>
        <ul class="chapters-list">
            <li class="chapters-list-item"><span class="chapters-time">00:00</span><span class="chapters-text">What is this video about</span></li>
            <li class="chapters-list-item"><span class="chapters-time">00:46</span><span class="chapters-text">About Atchi</span></li>
            <li class="chapters-list-item"><span class="chapters-time">02:53</span><span class="chapters-text">What is inside of a chip</span></li>
            <li class="chapters-list-item"><span class="chapters-time">11:28</span><span class="chapters-text">JTAG, testing, software on chip</span></li>
            <li class="chapters-list-item"><span class="chapters-time">19:39</span><span class="chapters-text">What is on silicon and what are the challenges</span></li>
            <li class="chapters-list-item"><span class="chapters-time">32:34</span><span class="chapters-text">How transistors look and how they are connected</span></li>
            <li class="chapters-list-item"><span class="chapters-time">47:07</span><span class="chapters-text">Operating conditions</span></li>
            <li class="chapters-list-item"><span class="chapters-time">53:06</span><span class="chapters-text">ESD</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:04:38</span><span class="chapters-text">Designing a chip (example)</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:17:05</span><span class="chapters-text">Autorouting</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:35:58</span><span class="chapters-text">Moore's Law</span></li>
    </div>
    
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://www.linkedin.com/in/atchireddy-chavva-23726a7/">Atchi's LinkedIn</a></li>
            <li class="links-list-item"><a href="https://fedevel.com/courses">FEDEVEL Online courses</a></li>
        </ul>
    </div>  
</div>

What is Inside of Integrated Circuits? How Are Chips Designed?

<div class="entry-content">
    <div class="jetpack-video-wrapper"><span class="embed-youtube" style="text-align:center; display: block;"><iframe src="https://www.youtube.com/embed/Tt8X6_maj6c" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        When capacitor is an inductor …
    </div>
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://youtu.be/5Ca0Eah7eKI">Part 1: PCB Layout & Decoupling - Explained why it´s so complicated</a></li>
            <li class="links-list-item"><a href="https://youtu.be/Tt8X6_maj6c">Part 2: PCB Layout & Decoupling - Understanding Impedance</a></li>
            <li class="links-list-item"><a href="https://youtu.be/hZSOhVdzqZk">Part 3: PCB Layout & Decoupling - Measuring and Fixing</a></li>
            <li class="links-list-item"><a href="https://www.wikihow.com/Calculate-Impedance">Calculating Impedance Webpage</a></li>
            <li class="links-list-item"><a href="https://youtu.be/YLGrugmDvc0">Series Resonance in RLC Circuit</a></li>
        </ul>
    </div>   
</div>


PCB Layout & Decoupling – Understanding Impedance (Part 2)

<div class="entry-content">
    <div class="jetpack-video-wrapper"><span class="embed-youtube" style="text-align:center; display: block;"><iframe src="https://www.youtube.com/embed/C7-8nUU6e3E" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        Entire step-by-step PCB design process going through the schematic, layout, and routing of a 'barebones' STM32F4-based PCB including USB and a buck converter in KiCAD. All the way from schematic creation, through to four-layer PCB layout and routing, as well as sending it off for manufacture and assembly via JLCPCB.<br><br>

This is an update from the original 'KiCad STM32 Hardware Design' video, including some additional tips and tricks, as well as a show of various assembled boards made by JLCPCB. Hopefully with much improved audio quality!
    </div>
    <div class="blog-content-chapters">
        <div>
            Chapters:
        </div>
        <ul class="chapters-list">
            <li class="chapters-list-item"><span class="chapters-time">00:00</span><span class="chapters-text">Introduction</span></li>
            <li class="chapters-list-item"><span class="chapters-time">00:14</span><span class="chapters-text">Topics covered</span></li>
            <li class="chapters-list-item"><span class="chapters-time">00:31</span><span class="chapters-text">JLCPCB assembly showcase</span></li>
            <li class="chapters-list-item"><span class="chapters-time">00:58</span><span class="chapters-text">Parts used in design (JLCPB parts library)</span></li>
            <li class="chapters-list-item"><span class="chapters-time">03:28</span><span class="chapters-text">STM32 pin assignment in STM32CubeMX</span></li>
        </ul>
        <div>
            Chapters schematic:
        </div>
        <ul class="chapters-list">
            <li class="chapters-list-item"><span class="chapters-time">09:43</span><span class="chapters-text">KiCad project and schematic</span></li>
            <li class="chapters-list-item"><span class="chapters-time">10:06</span><span class="chapters-text">Schematic page settings</span></li>
            <li class="chapters-list-item"><span class="chapters-time">10:53</span><span class="chapters-text">Adding STM32F405 to schematic</span></li>
            <li class="chapters-list-item"><span class="chapters-time">12:10</span><span class="chapters-text">STM32 power pins</span></li>
            <li class="chapters-list-item"><span class="chapters-time">14:14</span><span class="chapters-text">Labelling pins/global labels</span></li>
            <li class="chapters-list-item"><span class="chapters-time">14:57</span><span class="chapters-text">VCAP pins</span></li>
            <li class="chapters-list-item"><span class="chapters-time">16:37</span><span class="chapters-text">NRST and BOOT0 pins, Bootmodes</span></li>
            <li class="chapters-list-item"><span class="chapters-time">20:24</span><span class="chapters-text">Transferring assignments from CubeMX to KiCad</span></li>
            <li class="chapters-list-item"><span class="chapters-time">23:58</span><span class="chapters-text">'No connect' flags</span></li>
            <li class="chapters-list-item"><span class="chapters-time">24:48</span><span class="chapters-text">Decoupling capacitors</span></li>
            <li class="chapters-list-item"><span class="chapters-time">26:10</span><span class="chapters-text">VDDA pin decoupling</span></li>
            <li class="chapters-list-item"><span class="chapters-time">27:54</span><span class="chapters-text">Crystal circuitry (HSE)</span></li>
            <li class="chapters-list-item"><span class="chapters-time">37:15</span><span class="chapters-text">LED and current limiting resistor</span></li>
            <li class="chapters-list-item"><span class="chapters-time">39:26</span><span class="chapters-text">Buck converter circuitry (+ fusing, reverse polarity protection)</span></li>
            <li class="chapters-list-item"><span class="chapters-time">56:15</span><span class="chapters-text">Connectors (SWD, I2C, UART)</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:02:40</span><span class="chapters-text">USB</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:11:09</span><span class="chapters-text">Electrical rules checker (ERC)</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:12:55</span><span class="chapters-text">Mounting holes</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:13:45</span><span class="chapters-text">Assigning footprints to symbols</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:24:36</span><span class="chapters-text">Generating the netlist</span></li>
        </ul>
        <div>
            Chapters layout:
        </div>
        <ul class="chapters-list">
            <li class="chapters-list-item"><span class="chapters-time">1:24:55</span><span class="chapters-text">Choosing the number of PCB layers</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:26:11</span><span class="chapters-text">Design rules</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:27:26</span><span class="chapters-text">Rough layout (section by section)</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:35:09</span><span class="chapters-text">Improving the layout, finer details</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:53:17</span><span class="chapters-text">Mounting hole placement</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:55:10</span><span class="chapters-text">Board outline and rounded corners</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:57:40</span><span class="chapters-text">Rearranging connectors</span></li>
        </ul>
        <div>
            Chapters routing:
        </div>
        <ul class="chapters-list">
            <li class="chapters-list-item"><span class="chapters-time">2:00:19</span><span class="chapters-text">Adding track widths</span></li>
            <li class="chapters-list-item"><span class="chapters-time">2:00:55</span><span class="chapters-text">Power and ground planes (copper pours)</span></li>
            <li class="chapters-list-item"><span class="chapters-time">2:03:10</span><span class="chapters-text">STM32 routing (critical items first)</span></li>
            <li class="chapters-list-item"><span class="chapters-time">2:04:41</span><span class="chapters-text">Tombstoning</span></li>
            <li class="chapters-list-item"><span class="chapters-time">2:05:55</span><span class="chapters-text">Track spacing</span></li>
            <li class="chapters-list-item"><span class="chapters-time">2:08:49</span><span class="chapters-text">Buck converter routing</span></li>
            <li class="chapters-list-item"><span class="chapters-time">2:10:00</span><span class="chapters-text">Track width calculator</span></li>
            <li class="chapters-list-item"><span class="chapters-time">2:12:39</span><span class="chapters-text">USB controlled impedance differential traces</span></li>
            <li class="chapters-list-item"><span class="chapters-time">2:13:08</span><span class="chapters-text">JLCPCB impedance calculator</span></li>
            <li class="chapters-list-item"><span class="chapters-time">2:16:09</span><span class="chapters-text">Connecting GND and 3V3 (with vias to internal copper pours)</span></li>
            <li class="chapters-list-item"><span class="chapters-time">2:28:00</span><span class="chapters-text">Design rules check (DRC)</span></li>
            <li class="chapters-list-item"><span class="chapters-time">2:28:50</span><span class="chapters-text">Silkscreen (labelling, pin 1 indication, polarity indication)</span></li>
            <li class="chapters-list-item"><span class="chapters-time">2:36:10</span><span class="chapters-text">Importing custom graphics as silkscreen</span></li>
        </ul>
        <div>
            Chapters manufacturing and assembly:
        </div>
        <ul class="chapters-list">
            <li class="chapters-list-item"><span class="chapters-time">2:36:55</span><span class="chapters-text">Hiding JLCPCB order number</span></li>
            <li class="chapters-list-item"><span class="chapters-time">2:37:42</span><span class="chapters-text">Adding tooling holes for assembly</span></li>
            <li class="chapters-list-item"><span class="chapters-time">2:39:10</span><span class="chapters-text">Generating Gerber and drill files</span></li>
            <li class="chapters-list-item"><span class="chapters-time">2:40:27</span><span class="chapters-text">Footprint position file</span></li>
            <li class="chapters-list-item"><span class="chapters-time">2:41:34</span><span class="chapters-text">Bill of materials (BOM) and assigning part numbers (LCSC)</span></li>
            <li class="chapters-list-item"><span class="chapters-time">2:44:32</span><span class="chapters-text">Ordering PCBs via JLCPCB with assembly</span></li>
        </ul>
    </div>
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://github.com/pms67/STM32F4-Reference-PCB">Github - pms67/STM32F4-Reference-PCB</a></li>

            <li class="links-list-item"><a href="https://fedevel.com/courses">FEDEVEL courses</a></li>
        </ul>
    </div>  
</div>

KiCad STM32 + USB + Buck Converter PCB Design and JLCPCB Assembly (Update) - Phil's Lab #11

<div class="entry-content">
    <div class="jetpack-video-wrapper"><span class="embed-youtube" style="text-align:center; display: block;"><iframe src="https://www.youtube.com/embed/4nEd1jTTIUQ" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        I always wanted to see if for higher frequencies currents really flow under signals. And, here it is …
    </div>
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://github.com/FEDEVEL/youtube-current-return-path">Download Altium & Simulation files</a></li>
        </ul>
    </div>   
</div>


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