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Finishing Strong with PCB Drawing Software and Manufacturing Data Files Finishing Strong with PCB Drawing Software and Manufacturing Data Files I have a great admiration for people who run. Since I am not a runner myself I can’t necessarily identify with their desire to run, but I can sure appreciate their determination. I find the runner’s tenacity to finish a long, grueling race a very motivational quality; even when they are running on empty, you will see that look of resolve on their faces as they push hard to “finish strong.” We as printed circuit board designers need to “finish Read Article
Instructions Are Easy When You Write Them: The PCB Assembly Drawing Instructions Are Easy When You Write Them: The PCB Assembly Drawing learn about the basics of assembly drawing. Read Article
Following the Recipe for PCB Design: The PCB Fabrication Drawing Following the Recipe for PCB Design: The PCB Fabrication Drawing A few years ago I surprised my wife by making her crème brûlée for her birthday. She was stunned—the extent of my cooking at that time was limited to boiled eggs and burnt toast. Before attempting it, I spent some time finding a recipe with clear instructions to follow. With the recipe holding my hand every step of the way, I cooked my way into being a hero for the day. In hindsight, there wasn’t much to lose if I messed it up; we’d be Read Article
Security by Design: Internet of Things Authentification and Self Testing Security by Design: Internet of Things Authentification and Self Testing Have you noticed how many organizations are getting hacked lately? Businesses like Equifax aren’t the only targets of these attacks; government institutions like the NSA have also been hit. Even the Internet of Things (IoT) has been targeted. Hackers infect and control devices in order to use them as a tool for distributed denial-of-service (DDoS) assaults. I’m sure you’ve gotten your credit card hacked, as well; I have. The difficult part about Read Article
Tips for Real-World PCB Design: Timing, Communication, and Traceability Tips for Real-World PCB Design: Timing, Communication, and Traceability I love food; I love the preparation, finding the ingredients, adding the minute adjustments of seasonings and salt, and cooking multiple courses at once. But when I first started cooking for myself, I prepared each part of the meal individually. I found it immensely difficult to keep track of the different dishes and ensure none stuck to the pan—or went without stirring for too long. So I sacrificed time and did each task individually. What my Read Article
How the Right Tools in Your PCB Toolkit Can Help Your Next Design How the Right Tools in Your PCB Toolkit Can Help Your Next Design When my sons were young, it was a joy for me to introduce and show them how to use tools for repair or construction. They would ask questions about the different tools in my toolkit, and my pair of old Channellock pliers really seemed to catch their interest. To tell the truth, those Channellocks are my favorite too. I inherited them from my dad, and still use them. They’re the first tool in my kit that I look for when I need to solve a problem Read Article
High-Speed Design Techniques: Trace Tuning for Routing Length Matching High-Speed Design Techniques: Trace Tuning for Routing Length Matching The first time I heard someone talking about “tuning” their high speed design techniques, the memory of my middle school band came to mind. Back in those days, “tuning” meant taking kids who lacked experience and who used tired old instruments and trying to turn it all into something that blended together. As you would expect, our first attempts at being in tune were not very successful. After some work learning about signal integrity, the ground Read Article
How Multi-Level BOMs Can Organize Your Next System Design How Multi-Level BOMs Can Organize Your Next System Design If only packing for vacation were as simple as it sounds: figure out what clothes you need, throw them in a suitcase, and you’re ready to go—wrong! Here’s the more realistic vacation planning scenario: pack your clothes, pack your children’s clothes, and then pack all the other personal necessities such as diapers, games, etc. Next you need to pack the food followed by whatever gear your particular vacation requires including tents, fishing Read Article
How Component Placement can Make or Break Your Manufacturing Budget How Component Placement can Make or Break Your PCB Machine Manufacturing Budget With each new PCB design, there comes a time when you must make decisions based on more than performance alone. Physical space is easily overlooked in the world of equations, schematics, and oscilloscopes—we'll often focus on signal integrity over such mundanities as component volume. In the days of room-filling computers, we didn’t have to be deliberate with our space. However, cost, time and space requirements have obviously changed. There is Read Article
High Speed PCB Designing: Signal Paths Introduction to High Speed PCB Designing: Signal Paths Have you ever planned an airline trip where there isn’t a direct flight to get you to your destination? I have, and as you probably already know, it isn’t a problem. I use the travel planner on my airline’s website and let it figure out every detail of the trip for me. All I have to do is plug in my origin and destination, and the planner determines my itinerary—with enough time to make my connections. It’s a piece of cake. Can you imagine how Read Article
How Schematic Design Reuse Can Help Your Next PCB Schematic Layout How Schematic Design Reuse Can Help Your Next PCB Schematic Layout In the town where I live there is this lady who is a magician with a sewing machine. She is in charge of the wardrobes for the high school musicals and is a whiz at taking costumes from old shows, and reusing them for new productions. Sometimes she alters the older costumes, and sometimes she simply uses them the way they already are. In the show this year, the evil queen is wearing a flamboyant dress that is actually an altered version of a Read Article
Using Obsolescence Management Software to Avoid Surprises with Obsolete Parts Using Obsolescence Management Tools and Software to Avoid Surprises with Obsolete Parts Recently I helped with a plumbing problem at my mother-in-law’s house. A fixture had started to leak and water was going everywhere. As she thought about it for a while, mom realized that she had been living there for 25 years and had never replaced this fixture. The old part had now failed though, and needed to be replaced. However, trying to find a modern replacement part that would fit turned out to be an even bigger problem. It’s one of those Read Article
Using Bill of Material Management to Prevent Problems with Moisture Sensitive Devices Using Bill of Material Management to Prevent Problems with Moisture Sensitive Devices Up here in the Pacific Northwest we are once again in the rainy season. My family doesn’t like it, my friends don’t like it, and even my dog doesn’t like it. The other night I had to pull the ladder out of the garage to unclog a gutter during a rainstorm. That was definitely not on my list of fun things to do, especially at 11:00 at night. We are used to the rain though. We know how to direct the water run-off so that it doesn’t pool up, we have Read Article
The Best Tools for Multi-Board PCB Systems Design The Best Tools for Multi-Board PCB Systems Design They say that time flies when you’re having fun. Maybe that’s why I feel like time slows to a crawl when I’m constructing a multi-board PCB device. Designing even one board can be an agonizing task, what with trying to avoid EMI, ground everything properly, mitigate static discharge, and optimize your routing. Creating a system of PCBs that all fit together physically and electrically sometimes tests the limits of tedium. Lucky for us there are Read Article
Advantages of Hierarchical Schematic Designs for PCB Schematic Layouts Advantages of Hierarchical Block Diagrams and Schematic Designs for PCB Schematic Layouts Hierarchical schematic designs, or block design, can help you better organize PCB schematic layouts by reducing workload for identical blocks of circuitry and enabling design reuse. Read Article
PCB Design and Fabrication Tips to Prevent Open Circuits During PCB Manufacturing Printed Circuit Board Design and Fabrication Tips to Prevent Open Circuits During PCB Manufacturing For a couple years, I lived in a town with a chocolate and candy factory. It was an amazing and terrible time, because you could go to the factory and buy “seconds,” or messed up candies, for about 75% off the normal price. Usually, the mistake was cosmetic, like the chocolate cracking over the caramel, and everything tasted totally fine. When a PCB manufacturer makes a mistake, sometimes it’s cosmetic, and the board will still function Read Article
PCB CAD Design for Manufacturing Guidelines: How Trace Routing Can Affect Solder Joints PCB CAD Design for Manufacturing Guidelines: How Trace Routing Can Affect Solder Joints A couple of weeks ago I attended a concert that was a tribute to the big band leader Stan Kenton. I love big band jazz for many reasons, one of which is the configuration of musicians and instruments in the band. There are usually around 15 to 20 musicians on different instruments, and everyone plays a different part. If just one person makes a mistake, it can ruin the balance of the number that was so carefully arranged by the composer. The Read Article