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William Murray
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EMC Problems in Modern Electronics
William Murray  
11/20/2013   29 comments
Electromagnetic compatibility and radio frequency interference issues are increasingly more problematic. Here's how some problems occur.
Silicon Carbide FETs Shine in SMPS Applications
William Murray  
9/26/2013   10 comments
SiC FETs are like conventional MOSFETs in some ways and much better in other ways. They do have a few shortcomings -- but we can live with that.
High-Reliability Designs Reqire Sophisticated High-Reliability Testing
William Murray  
9/5/2013   17 comments
For high-rel designs, don't just read the data sheet and hope for the best. Create and implement test protocols to make sure your product keeps going.
Deep Space Exploration: Consider Designing an Alternative Approach
William Murray  
8/30/2013   24 comments
Engineers can get in a rut when it comes to design methodology. Try thinking outside of your comfort zone to reach a solution.
New Low-Noise LDO Regulators Are Here
William Murray  
8/28/2013   13 comments
With an LDO that has good PSRR specs, filtering the DC for sensitive circuitry may be unnecessary.
ESD Protection for Analog Circuits
William Murray  
8/9/2013   11 comments
There are a variety of methods to protect sensitive circuitry from getting zapped from ESD. Here are the most common and most reliable techniques.
Designing for High Temperature With Discrete Components
William Murray  
7/29/2013   6 comments
Designing for high-temperature environments is no easy task. And finding the right parts makes the task tougher still.
Power-On Reset: The Analog, the Digital & Some of What Can Go Wrong
William Murray  
7/24/2013   9 comments
Most digital circuitry needs to be held in reset whenever the power is coming on or going off. The specific way that you do this is the key to designing a robust, reliable circuit.
Process Management for Radiation Effects at Altitude
William Murray  
7/18/2013   3 comments
Radiation can and will affect electronics at sea level somewhat, but more severely at the altitudes at which most commercial aircraft fly.
When Things Get Very Complex, Is Six-Sigma Enough?
William Murray  
7/15/2013   8 comments
Does six-sigma provide sufficient reliability? How about nine-sigma? Some further thoughts on reliability.
Magnetic Field Sensors
William Murray  
7/12/2013   17 comments
Magnetic fields can be detected and measured with a variety of different sensors. Some of the devices exhibit variations in resistance; some put out a varying voltage or current. Some are inexpensive, general purpose devices. Others are the exact opposite.
Component Count & Reliability
William Murray  
7/8/2013   6 comments
There are factors beyond simply using good quality components that will affect your products reliability. Statistically, the number of components and interconnections will have a direct effect.
Designing Magnetics
William Murray  
7/4/2013   6 comments
Designing inductors and transformers used to be difficult and labor intensive with lots of trial and error. It's a lot easier now.
Design Margins in Analog & Digital
William Murray  
4/19/2013   16 comments
Design margin can sometimes be a vague concept. It's best to analyze a design carefully and sometimes you must be especially cautious with systems where safety is paramount.
Monte Carlo Musings
William Murray  
3/19/2013   12 comments
Using Monte Carlo analysis will find problems with mass-produced circuits that you might not otherwise find until you build thousands of units. Then you'll have to deal with upset customers and the large repair costs associated with reworking units in the field.
RF Susceptibility & Operational Amplifiers
William Murray  
3/11/2013   4 comments
High-frequency energy can interfere with the circuitry that processes low-frequency signals, even in devices with very low-bandwidth capability.

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