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Performing Breakdown Voltage and Leakage Current Measurements on Today’s High Voltage Semiconductor Devices Wednesday, September 11, 2019
After years of research and design, Silicon Carbide (SiC) and Gallium Nitride (GaN) power devices are becoming more viable.  But, these devices, though high performance, come with challenges, including gate drive requirements.   SiC requires much higher gate voltage (Vgs) with a negative bias for turn off.  GaN, on the other hand, has much lower threshold voltage (Vth), requiring tight gate drive …
Tired of Cutting the Cable? Meet Signal Separation for Automotive Ethernet Wednesday, September 4, 2019
As many of us know, the amount of data generated by sensors inside an automobile has grown significantly over the last decade and is expected to grow exponentially as manufacturers race towards autonomous vehicles. Multiple sources predict that autonomous vehicles will generate between 4TB and 20TB of data per day, per vehicle. In comparison, an average person’s video, chat, and other internet …
Which oscilloscope to buy? Things to consider when choosing a scope Thursday, August 29, 2019
Oscilloscopes are used as windows into signals for troubleshooting circuits or checking signal quality. A digital oscilloscope, which is what we’re going to be concentrating on in this article, acquires and stores waveforms. The waveforms show a signal’s voltage and frequency, whether the signal is distorted, timing between signals, how much of a signal is noise, and much, much more. But how to …
How Does an Oscilloscope Measure Frequency? Thursday, August 29, 2019
Oscilloscopes are primarily set up to measure the voltage of an electrical signal, which is then graphically represented by waveforms. However, scopes can be used to take measurements for a number of different applications – one of which is frequency. But how does an oscilloscope measure frequency, exactly? Well, there’s a straightforward answer, and then there’s a slightly more complicated …
How can an oscilloscope measure current? Thursday, August 29, 2019
Most oscilloscopes only directly measure voltage, not current, however there are a couple of ways it is possible to measure current using a scope: Measure the voltage dropped across a shunt resistor – some power supply designs may have shunt resistors built into the design for feedback. One technique is to measure the differential voltage drop across such a resistor. These are generally low-value …
What is an Oscilloscope Probe? Thursday, August 29, 2019
An oscilloscope probe is a device that makes a physical and electrical connection between a test point or signal source and an oscilloscope. Depending on your measurement needs, this connection can be made with something as simple as a length of wire or with something as sophisticated as an active differential probe. Essentially, a probe is some sort of device or network that connects the signal …
What can an oscilloscope measure? Thursday, August 29, 2019
Most, if not all, consumer products have electronic circuits or components – whether they’re simple or complex – and oscilloscopes are required throughout the design, verification, and debugging process. Understanding oscilloscope basics is critical to almost all product design. But this begs the question – what can an oscilloscope measure? Put simply, an oscilloscope is a sophisticated …
New RF vs. Time waveforms in Spectrum View – What are they and what can they do for you? Part 3 Wednesday, August 28, 2019
Several months back, we added a new kind of frequency analysis capability called “Spectrum View” to our 5 and 6 Series Mixed Signal Oscilloscopes.  I posted a two-part article called “A New Approach to Frequency Analysis on Oscilloscopes”  Part 1 and Part 2, explaining the differences between this approach and run-of-the-mill oscilloscope FFTs.  Since then a couple of things have happened.  Tek …
Ensuring Optimal Performance of your Power Supply Design Wednesday, August 21, 2019
Are you working on power circuit stability? Are your DC-DC converters performing as expected? Are you having trouble optimizing your power conversion circuits? Are you having trouble getting the promised efficiency and performance from your fast switching power converter? Current power supply topologies are reliable and well understood in the power electronics industry. New wide bandgap …
mmWave Wi-Fi Steps up to Deliver Next Generation Wireless Experiences Friday, August 16, 2019
There are two related problems with ubiquitous Wi-Fi networks we all have in our homes and businesses. First, there’s the sheer number of devices in the 2.4 and 5 GHz spectrum, from smart TVs to wireless doorbell cameras. Since the Wi-Fi protocol doesn’t provide for central management, all these nearby devices relentlessly compete with each other for airtime. Second, Wi-Fi networks struggle to …

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