shorter stuff
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Signetics 25120
Once upon a time, the place known as “Silicon Valley” was once filled with factories that designed and built silicon-based […]
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Electrical Water
The flow of water in a hose is often used as an analogy for electrical current. Let’s see about that, […]
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Oil-Field
I’ve not kept up with this technology in 15 years or more – after my time in mineral and oil/gas […]
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Method To Measure Atmospheric Molecular Absorption
One topic I had been interested in for some time is the problem of measuring atmospheric constituent gases from aircraft […]
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Cryogenic Temperature Sensing Analysis
Sometime long ago I was asked to analyze a temperature sensing system which had an operating temperature of “about” 100K […]
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Photodiode Dark Current
At times, empirical data becomes both useful and necessary. I wanted to establish a practical lower measurement limit for a […]
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Interview Question
My notes suggest this was an interview question at one time. What I didn’t note is when, who, and whether […]
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“Current” (2005) Research Topics
More ideas that didn’t go anywhere than those that did. Here are three that didn’t go anywhere. Brief Discussion of […]
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Gyrators
A circuit that I always felt useful yet never had the opportunity to actually put into a circuit. Drs. John […]
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Thermal & Shot Noise Derivations
These are defined as “exact” fundamental constants by NIST k = Boltzmann Constant = q = Electron Charge = Thermal […]
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Noise Equivalent Bandwidth
Noise in RC Networks is kT/C, not 4kTRf The thermal noise in a RC network is determined by the temperature […]
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Diodes & Temperature
A few stray discussions of pn- junctions and how they interact with temperature.
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Rise Time & Bandwidth
Rise time is defined as the time for a waveform to transition from 10% of the final steady-state amplitude to […]
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Temperature Change of Copper PCB Traces
Copper is copper, right? A great conductor. Not the best (that would be silver), but 2nd-best works … especially when […]
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Wheatstone Bridge
The Wheatstone Bridge is a simple circuit capable of making very accurate measurements. The basic network was actually proposed in […]
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To Bit Or Not To Bit
I once worked on a program that collected hundreds of Gbytes of data during 4 and 8 hour flight-based measurements. […]
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Line Termination
Line termination: seems it should be a basic bit of knowledge for a practicing designer. However, it is not so […]
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Boost Converter
When I design a field instrument, I need to consider the power supply as well … actually the power supply […]