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Thought Leadership
PCB Conformal Coating Types: Which is Best for Your New Board?
There are many PCB conformal coating types that can be used to protect your board from excess moisture and corrosion.
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UART vs. SPI vs. I2C: Routing & Layout Guidelines
If you’ve never worked with an MCU and programmable ICs, here are some routing and layout guidelines on I2C vs. SPI vs. UART.
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Heidi Barnes, Senior Application Engineer and Power Integrity Product Owner
Heidi Barnes is an anomaly in the PCB design world—a long-time, senior-level woman, and hardware engineer, whose career has been steeped in a wide variety of experiences with numerous technologies. Within the industry, she is widely recognized for her knowledge and expertise. Heidi holds five patents, was awarded the NASA Silver Snoopy for her work on hydrogen fire and gas detection, she is the author of over 20 papers on signal integrity and
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PFC Circuit Design and Layout for Power Systems
Much as we would like, the power input into a PCB is not always a clean DC or sinusoidal signal. DC coming from a rectifier will have some ripple from the output capacitor, and AC signals can contain noise or be less-than-perfect sine waves. There are some ways to correct these problems, either by choosing the right filtration circuit or by shaping the input wave to produce maximum power output to a load in the system. If you’re working with an
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A Power Integrity Primer
Take a look at our power integrity tutorial to better understand PDN design for low noise and and stable power to components.
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Why You Should Stop Hanging on to Legacy Design Rules
How to avoid problematic ‘legacy design rules’ that no longer apply to today’s technology. Watch and learn in this OnTrack episode with Eric Bogatin.
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World-Class Electrical Engineering Courses with Rolf Ostergaard
Denmark also has a robust tech industry. On several occasions, Speeding Edge partnered with Rolf Ostergaard, founder and owner of EE-Training, to present our two and three-day training courses in Copenhagen and Aarhus, Denmark as well as in Stockholm and Malmo, Sweden and Oslo, Norway.
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Honeywell Claims the Most Powerful Analog Quantum Computer of 2020
Quantum computing is about more than qubit count. See why Honeywell claims to have the most powerful quantum computer of 2020.
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How to Create a PCB Manufacturing Cost Estimation
Unless I receive a layout job directly from a manufacturer, my clients will usually ask if I’m a manufacturer. My company doesn’t manufacture boards, but I think it’s important to keep clients informed of the manufacturing costs for new PCBs. Once I started gathering estimates for some of my first projects, I started to better understand the primary cost drivers of PCB manufacturing and how to properly structure a comprehensive estimate for my
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What is a Schematic Netlist for Your PCB?
If you’ve created your next great schematic, there is a lot going on behind the scenes in your design software. The connectivity between components in your schematic can be reduced to a small number of logical and electrical identifiers. The schematic may provide a graphical picture showing connections between different components and pins, but to really understand everything about your design, you’ll need an important document. A schematic
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Stealth Aircraft, Meet Quantum Radar
If you read Max Clivefield's recent article on quantum computing and quantum communication, then you've got a head start on most when it comes to understanding entanglement. These esoteric areas of technology are likely to become more common in the coming decades, and could revolutionize modern technology. I'm skeptical that we'll have desktop quantum computers or quantum cell phones, but these new technologies are worth developing as they have
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Modeling Copper Foil Roughness Factor in Altium Designer's Impedance Profiler
Advanced transmission line models for long interconnects require that designers include copper foil roughness calculations in order to determine accurate impedance. Without the right models or design software, you’ll be left to estimate the skin effect impedance, dispersion, and parasitics in your PCB. These models can be difficult to work with by hand if you’re not mathematically inclined, but the right design tools can be used to quickly
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Hardware-in-the-Loop Testing: An Introduction
If you do a search for “Hardware-in-the-Loop” testing, you will frequently find examples of complex, real-time systems. This article from National Instruments, for example, gives a nice explanation and background on what hardware-in-the-loop (HIL) is, and provides an example of testing electronic control units within an automobile. In this article, we will be focusing on a smaller, more bite-sized version of HIL testing concepts. What is Hardware
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Power Delivery Systems Design
This article is intended to define the new challenges and provide guidance in how to successfully engineer the Power Delivery System (PDS) so it meets the needs of new technologies. As integrated circuit technology allows for billions of transistors on a single IC, it has resulted in very powerful systems on a chip. This has made it possible to put the equivalent of supercomputers inside video games, cell phones, and a host of other products that
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What is Burn-in Testing for Electronics?
Once you’re planning for production of any new board, you’ll likely be planning a battery of tests for your new product. These tests often focus on functionality and, for high speed/high frequency boards, signal/power integrity. However, you may intend for your product to operate for an extreme period of time, and you’ll need some data to reliably place a lower limit on your product’s lifetime. In addition to in-circuit tests, functional tests
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Bluetooth 5.1 SoC vs. Module: Which is Best for Your Design?
The list of features available in Bluetooth just got a little longer since the release of Bluetooth 5.1. Component manufacturers have taken this mobile technology to the next level for IoT devices by integrating wireless comms with an MCU for embedded processing. This is just another step in the continuous push to pack more functionality into a smaller footprint. If you want to incorporate a Bluetooth 5.1 SoC into your new product, you have two
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PCB Mountable Connectors: SMD vs. Through-hole
When I designed some of my first boards, I was always working at DC or low speed, and any signal integrity problems from my connectors were an afterthought. These initial boards were for low frequency measurements of an electrochemical sensor. The only circuitry involved was a low-pass filter circuit with through-hole passives, a PCB mountable connector for a lab-grade power supply, and a parallel connection to an SMU. After learning the finer
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