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Simulation / Analysis
Browse our library of resources to learn more about pcb design and ways to improve debugging and design testing of circuit boards with circuit simulation and analysis.
How an Electrolytic Capacitor PDN Issue Almost Brought Down a Building
I recently came across an interesting story that involves the tale of a boiler system that failed to start under the close supervision of a TDK-Lambda rep, only to be solved by none other than the building maintenance technician. The story starts by the shutdown of an aging boiler in the dead of winter a British winter that required replacement of the seven-year-old radiators. After the repair and replacements took place, the boiler was switched
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Voltage Regulators and How to Plan Your Power Budget with PDN Analysis
With my first buck regulator design, I had been given a power budget for the circuit block and I had to take into consideration what it was supplying and what topology I’d use. I considered efficiency to remove heat from the enclosure and I wanted to avoid using a heat sink. I also wanted a robust engine, a regulator to keep on working when the CPU, memory, and other utility circuits were exercising their might. I decided on the buck regulator
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Isolated vs Non-Isolated Power Supplies: The Right Choice Without Fail
There may come a time in your career as a PCB designer when you must adhere to regulatory requirements. Whether it be medical, automotive, military, or anything of the sorts, your design will certainly be scrutinized and held to very high standards.Oftentimes, when these regulations are in effect, power isolation (or lack thereof) is a very popular topic. What is power isolation, and what is an isolated power supply? Power isolation is
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Be the Expert When it Comes to Designing Your Power Distribution PCB
Editorial credit: Paolo Bona / Shutterstock.com Around my house, we seem to undergo a transformation to obscure-sport experts every four years, and coincidentally it occurs at the same time that the Winter Olympics is taking place. Yes, I’m talking about the sport of curling. We have all become subject matter experts in the “button,” the “hammer,” the “house,” “sweeping,” and of course the “curl.” Rest assured, by next month we will have
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8-bit vs. 32-bit MCU: Choosing the Right Microcontroller for Your PCB Design
I have very bad shopping habits when it comes to electronic gadgets. Torn between buying a new laptop or upgrading my tablet to an iPad Pro, I end up purchasing both and getting an endless lecture from my fiancé. Thankfully, I’m more decisive when choosing between 8 bit vs 32 bit microcontroller devices for my hardware design. They’re not too different in terms of cost, and one is more powerful than the other. To make the right choice, however
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Using PCB Star Grounding Can Keep Your Design Shining
Star charts and sextants seem like something from the days of sailing ships. Yet, unmanned and manned spacecraft depend on precise celestial navigation. When calculating the trajectory needed to traverse the solar system, interplanetary probes use an inertial coordinate system that places a grid fixed relative to a star background over the solar system. During manned lunar missions, the Guidance and Navigation dictionary relied on star charts
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For Your DC Power Application, Which Switching Power Supply Topology is Right?
We often have our old-timer pioneers to thank for laying down the groundwork for our continued success and future growth. These old-school designers had nothing more than theory and confidence to drive their designs, or more specifically, to drive their failures. But as stated by a multitude of wise individuals, each failure is nothing more than a discovery of how not to do something. However, with the discoveries of failures also come
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Phalanx, not Failure: PCB Shielding to Protect Your Design
During 7 B.C., Greek soldiers—or hoplites--carried a large, concave, circular pcb shield called the hoplon. Made from bronze and wood, the hoplon or Argive shield protected hoplites from chin to knee and—when overlapped—became the basis for the Greek phalanx. At the beginning of the 20th century, Ethiopians used their shields when fighting against an invading Italian army. The constant banging on the shields by the Ethiopians mingled with war
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Raise the Volume: How To Design A Signal Amplification Device
When you’re used waking up to your baby’s loud cries in the middle of the night, you can sleep through any alarm clock. After a few months of babysitting, you stop hearing any alarm that isn’t amplified by a loudspeaker. Even in electronics, signals sometimes need to be amplified before being processed by microcontrollers. For example, audio signals and inputs from certain microsensors might require amplification before they can be processed by
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A Big Kick in PCB Interconnect Solutions: Multi-Board Best Practices
I’ve always enjoyed thinking about circuits similar to tiny cities. Copper routing as the streets, components as building structures, vias, and the following electrons as the inhabitants running around. But imagine what PCB would be in the city from Inception where the flat ground starts turning on its head and extending overtop, or if Salvador Dali became a city-planner. In today’s world of densely packed components (HDI), advanced manufacturing
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Where Do They All Go? PCB Layout Component Placement Guidelines
When I first learned how to play “Hearts,” I was always worried about how to pass those three cards right off the bat. What if I helped who I was playing against? I got the hang of it eventually and with enough games under my belt. I could recognize card patterns to make the best choices, but until I got to that point it felt like I was throwing random cards across the tables. My PCB design wasn’t too far off from my card strategy there, in
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Properties of Semiconductors: Electrodeposition and PCB Devices
I started working with gas sensors 10 years ago—my team had several ideas on how to improve the performance of our devices by integrating semiconductor nanomaterials into our PCB-based sensors. We were familiar with various electron, barrier heights, valence electrons, conduction band and the semiconductor interface. We were all masters of electrodeposition and masters of gas sensors in our own right, and we had the idea to integrate the two
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Practice Makes Perfect: How to Test Electronic Components during PCB Design
When I was younger, well much younger, I had dreams of one day being a pro athlete. I wanted to be the guy who scored the winning touchdown, knocked in the winning run or hit the buzzer-beater. Although I never made to the professional level, I did have some success and I learned a lot. The most important thing was the results you achieved were strictly tied to your preparation. In other words, if I wanted to do well in the game I had to test
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High Current PCB Design and its Real World Applications
With the rise of PCB applications stretching far and wide, designs are being created for applications that extend past simple signal integrity solutions. Advancements in material technology, PCB manufacturing capabilities, and the rising demand for PCB design is opening up the floor for many industries that otherwise have been dormant in the PCB world. Many limitations that were not present a handful of years ago are beginning to loosen. Of
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The Advantages and Disadvantages of Designing with Breadboards
Breadcrumbs, breadboards, and breadwinners. One of which has electronic components. Two of which will provide you with a delicious and nutritious meal enough to feed a family. The first, will provide you with the foundational playground to which your printed circuit board board design will spawn from. I will save you time, effort, and many awkward encounters by telling you that if you go around trying to stick jumper leads into breadwinners
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Mastering Magnetism: Hall Effect Sensors and Applications for PCBs
Thales of Miletus obviously had a magnetic personality. People noticed when Aristotle celebrated his achievements when writing his best-selling Περὶ Ψυχῆς (On The Soul). Aristotle praised Thales for reasoning that magnets have souls: “Thales, too, to judge from what is recorded about him, seems to have held soul to be a motive force, since he said that the magnet has a soul in it because it moves the iron.” The reputation of Thales spread
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Designing Your PDN to Work Within Your PCB Layout Guidelines
I enjoy watching the occasional episode of Star Trek here and there, and I get a kick out of noting the inconsistencies in their technology. In one episode they may be firing all of their energy weapons at the bad guys, moving at warp 3-billion to time travel and showing no regard as to where their power was coming from. In the next episode though, someone will plug in a space toaster to warm up their breakfast in the galley, and the whole ship
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