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Content posted in June 2014
2-Port Analyzers on a Chip? Part 4: Voltage- & Current-Sense Interaction
Dennis Feucht  
6/30/2014   6 comments
One of the problems to be solved in the design of an SMU and a two-port analyzer (TPA) is to keep the voltage and current sensing from interfering with each other by causing error.
2-Port Analyzers on a Chip? Part 3: TPA Integration Challenges
Dennis Feucht  
6/30/2014   12 comments
A TPA consists of two or more SMUs. Two are required for basic transistor parameter measurement.
2-Port Analyzers on a Chip? Part 2: SMU Integration Challenges
Dennis Feucht  
6/30/2014   1 comment
An obvious limitation in integrating a two-port or transistor parameter analyzer is that, historically, curve tracers have been used to test power transistors, and they can require a large amount of pulsed power to be adequately tested.
The Diamond Plot
Steve Taranovich  
6/30/2014   7 comments
My signal is within the instrumentation amplifier’s specified input voltage range, but the output seems saturated. What’s happening? Is the part broken?
Looking Inside NFC Security: Eavesdropping Attack, Part 3
Victor Lorenzo  
6/30/2014   38 comments
The world is moving towards a globally connected devices network. Communications security becomes key from early design stages.
Power Factor Correction Principles in Flyback LED Driver
Richard Chung  
6/27/2014   Post a comment
While new EnergyStar directives for solid-state lighting require a power factor greater than 0.9 for power levels above 3W, the ballast input line current harmonics also need to meet the requirement set by IEC61000-3-2 Class C regulations.
Is There Still a Vacuum Tube in Your Future?
Analog Angle  
6/26/2014   27 comments
Most EEs don't think about vacuum electron devices, yet they still play a vital role in technology. Will GaN's progress accelerate their end?
IMS 2014 – Day 2 From an Applications Engineer Perspective
Jonathan Harris  
6/25/2014   15 comments
As is typically the case, at least from my observance in the last four years, the second day of the show proved to be the busiest.
IMS 2014: Day 3 From an Applications Engineer Perspective
Jonathan Harris  
6/25/2014   6 comments
After a good first two days and very enjoyable evenings of the IMS show, it was time for the last day, when traffic is typically good in the morning but tapers off as the day moves toward lunch and beyond.
How to Measure an Ultracapacitor’s State of Charge & State of Health
Mike Everett  
6/25/2014   13 comments
The use of electrochemical energy storage in high-reliability applications, such as those supporting the critical societal needs for reduction in carbon dioxide emissions or stabilizing the aging power grid, generally requires either real-time direct knowledge or at the very least, predicated state of the health of the energy storage device.
IMS 2014: Day 1 From an Applications Engineer Perspective
Jonathan Harris  
6/24/2014   7 comments
After a very eventful preparation and buildup to the IMS show this year, I’ll have to admit I was hoping for a smooth and uneventful show -- meaning no surprises resulting in something going wrong in the demonstration booth.
IMS2014 – The Preparation
Jonathan Harris  
6/23/2014   5 comments
Once again I thought I'd do a series of blogs on my experiences as an applications engineer for a major semiconductor company, Analog Devices, at International Microwave Symposium (IMS).
Back to School & Back to the Drawing Board for Those Who Neglect Circuit Protection
Bharat Shenoy  
6/20/2014   12 comments
Bharat Shenoy talked with members of the IEEE Student Chapter at Stanford University about some of the exciting things happening at Littelfuse.
Self-powered Internet of Things, From Theory to Reality – Small Sensors for Large Machines
Matthias Poppel  
6/19/2014   18 comments
Using energy-harvesting wireless technology, an intelligent predictive maintenance can be realized at affordable costs and even in retrofit projects.
Excel-Optimizing Resistor Ratios, Part 2
Aubrey Kagan  
6/18/2014   14 comments
Aubrey Kagan has completed the series on Excel that he set out to write nearly two years ago.
Parasitics & Capacitor Selection, Part 3: Dielectric Absorption (DA)
Chris Reynolds  
6/16/2014   3 comments
Parasitics often play a greater role in determining a capacitor's suitability for an application than the capacitance value of the part itself. This series looks at how some of these parasitics affect capacitor selection. This month, we'll examine dielectric absorption.
Why Ultracapacitors Belong in the Renewable Energy Value Chain
Mike Everett  
6/16/2014   26 comments
With ultracapacitors in the renewable energy value chain, renewable resources can increase and improve the quality of outputs, experience lower overall project costs, and optimize performance.
City Streetlights Become Smart: The New LED Street Lamps, Part 3
Paolo Scalisi  
6/16/2014   26 comments
The basic mechanism of the power conversion of the switching power regulator is the PWM strategy.
Where Are Your Analog Design Models Accurate?
Brandt Braswell  
6/13/2014   6 comments
The problem with producing models is that it is difficult to characterize the various sizes and lengths of transistors available for potential use in embedded circuit designs.
Wireless Power
John Perzow  
6/12/2014   31 comments
This is the first in a series of articles that will address the quickly evolving art and science of transmitting useful amounts of power without wires.
Safeguard RS-485 Links Against Electrical Transient Threats
Timothy Puls  
6/11/2014   9 comments
The protection circuitry needs to be as versatile at arresting rogue transients as the RS-485 interface is in its use in end applications.
City Streetlights Become Smart: The New LED Street Lamps, Part 2
Paolo Scalisi  
6/10/2014   7 comments
An important further step in the adoption of LED for street illumination has been taken by ST Mircoelectronics.
Excel-Optimizing Resistor Ratios, Part 1
Aubrey Kagan  
6/10/2014   20 comments
I have often wondered whether the practice of using a ratio of two resistors to determine a particular output is a fundamental property of electronics or a concerted effort by designers.
Design Challenge 4: Reliable, Portable Medical Design With Motors
Steve Taranovich  
6/6/2014   10 comments
The following is one design problem some former colleagues of mine came across for which they haven’t been able to come up with a good solution.
Planet Analog 'Ask the Experts' Session for June: Op Amps
Steve Taranovich  
6/5/2014   Post a comment
Planet Analog "Ask the experts" session for June: Op Amps.
2-Port Analyzers on a Chip? Part 1: What Are TPAs?
Dennis Feucht  
6/5/2014   1 comment
In the beginning, there were curve tracers made by Tektronix.
Overranged Converter Recovers Quickly
Steve Taranovich  
6/4/2014   1 comment
How do you verify overrange recovery in high-sample-rate converters?
City Streetlights Become Smart: The New LED Street Lamps, Part 1
Paolo Scalisi  
6/3/2014   55 comments
The new strategy for street illumination is mainly focused on LED lights.
Excel: Using the Validate Data Feature
Aubrey Kagan  
6/2/2014   4 comments
In this blog I will attempt to show how to use the data validate feature to simplify data input to a worksheet.
ADC Power Supplies: Inputs
Jonathan Harris  
6/2/2014   5 comments
We’ll start by taking a look at the power supply inputs of the ADC, what we typically use to supply power to the ADC, and some of the tradeoffs of the different methods.




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