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PCB Design
Create a Buck-Boost Power Supply
In this series of articles, we’re looking at the design and implementation of the main types of power regulators and converters you might use in an electronics project. I gave a graduate engineer who I mentor a series of requirements to demonstrate each of these types and have recorded the results here so you can work through the same exercises and hopefully come up with the same results. The next switching regulator is the last in our switching
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How to Design a PCB for a Boost Converter
In this series of articles, we’re looking at the design and implementation of the main types of power regulators and converters you might use in an electronics project. I gave a graduate engineer who I mentor a series of requirements to demonstrate each of these types and have recorded the results here so you can work through the same exercises and hopefully come up with the same results. For the next switching power supply project from my
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How to Make Advanced BLDC Motor Controllers
In this project article, we’re going to be taking a different approach to my typical project. Driving a brushless motor is relatively simple from a schematic perspective; however, there is a large amount of theory about brushless direct current motors that you need to understand to be successful. If you only have experience with brushed motors or no experience with driving motors at all, we will be covering everything you need to know. You can
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Controlling Crosstalk In Connector Pinouts
This article will describe this type of crosstalk, the types of disruptions it causes, wherein the design cycle it needs to be factored in and how it can be successfully controlled.
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Assembly: The Last Step In The PCB Product Development Process
As pointed out in previous articles, design is the first step in the PCB product development process, so the board designer needs to understand how the downstream processes will impact his design processes/selections/decisions, and this understanding needs to encompass both technical and financial considerations. These deliberations are viewed and weighted as trade-offs. What might make sense from a technical standpoint may not always make sense
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Differential Signaling In High Speed Data Link Flexible Circuits
As noted in many previous articles, due to high-speed and high data-rate designs, most modern products utilize differential signaling. If utilizing the right design protocols and design toolsets, handling differential signaling in standard, rigid PCBs is easily doable. But utilizing differential signaling in flex circuits creates another set of issues, questions, and design challenges. This article will address how differential signaling is
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From RC to Atomic Clocks: All Clock Sources
In almost modern circuits, especially whenever digital circuitry is involved, you will find some kind of clock source. All clock sources present a series of tradeoffs regarding stability, reliability, size, power consumption and cost. Luckily for us, such tradeoffs are relatively simple and can be explained almost fully within this single article. We’ll discuss the pros and cons of each clock source, from the RC in a 555-powered oscillator, to a
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What They Don't Teach You About Capacitors
In engineering, we often adopt hundreds of mental shortcuts in order to keep the complexity of the topics we tackle to a manageable level. If we were to run a quantum-physics simulation every time we flash an LED, we would never get anything done. Yet, many of these shortcuts and rules-of-thumb were created in times past , when the electronics industry was radically different than what it is now. Today, we are going to unlearn what a capacitor is
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What They Don’t Teach You About Solder Fluxes on PCBs
Introduction As engineers, we sometimes sit high on our pillowy chairs, looking at the nitty and gritty of the industry — such as the fabrication of the PCB — with a bit of nonchalance. The truth of the matter is, when studied in-depth, PCB fabrication is an extremely complex technological topic that deserves recognition as the most fundamental part of PCB engineering. Unless connectors, conductive adhesive, wire-bonding, or zebra-tape are used
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LearnEMC CEO Todd Hubing on Engineering Consulting Services
Kella Knack interviews Dr. Todd Hubing a top EMC expert. They discussed topics about the design challenges in Automotive Industry and tackled EMC concerns at the board level.
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Build the Best CAD Computer for 2020
In search of the best CAD computer? In this blog post, expert Mark Harris shares his top picks of high performance and best value for money CAD computers.
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Thought Leader Article, Dave Huntley, PDF Solutions
In an ideal world where ideal products are developed, we would never have any issues resulting from any step in the design, fabrication, assembly, test and field operation processes. But in the real product development world that we inhabit, it is a fact that some level of undesired quality and reliability issues will occur. We continually look for novel ways to address these manufacturing issues especially as the components and the PCBs where
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Interference Amplitude Distortion
I’ve talked about COM and channel analysis in previous blogs, and I’d like to continue the discussion with more visual aids and some example code to enable readers to do some analysis themselves. To start, let’s review what COM is and a high level overview of how COM is calculated. COM is a signal-to-noise ratio of voltage at a point in time. The point in time is the sampling point, and the available signal is the voltage of the pulse response at
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PCB Changes: Tips for Updating Old PCB Designs with New Parts
Follow our tips for updating old PCB designs with new parts. Altium Designer helps you stay productive and design successfully.
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Build a DC-DC Buck Regulator - Student Project
In this article, Mark Harris will go through the implementation of power supplies in a PCB Design project with a student. Curious how it turned out? Read now to learn more.
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Save PCB Space: Tips for Getting Started In Compact PCB Design
How do you tackle a high-density layout PCB design project? Mark Harris gives you a head start in acing your compact PCB design. Read and learn from the expert here.
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PCB Manufacturing Cost Drivers and Designing to Cost
Whenever I’ve engaged with a startup client that wants to understand board design and manufacturing costs, they often get surprised when I tell them the major PCB cost drivers and start giving some ballpark estimates. For a startup hardware company, or even a major enterprise that does not normally engage in electronics manufacturing, the numbers can be surprising, especially for low-volume runs. There is this perception that electronics
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