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November 2005



Fluorescent Light Bulb Experiment part 3

Tuesday, 29 November 2005 8:55 P GMT-06
This is another follow up to the experiment described in Fluorescent Light Bulb Experiment and Fluorescent Light Bulb Experiment part 2.The front porch light just burned out and I replaced it with a fluorescent bulb from a different manufacturer.&nbs
Category: Home Projects Energy

Signal Integrity for Signals with Large Impedance Mismatches

Tuesday, 29 November 2005 7:17 P GMT-06
Usually in signal integrity design, one goal is to minimize impedance mismatches throughout a system to maintain good signal quality.  Some low data rate systems however require transmission through transmission channels that are not very well m
Category: High Speed Digital Design

Nuts & Volts Magazine Back Issues

Friday, 25 November 2005 2:50 P GMT-06
I have over the years enjoyed reading Nuts & Volts magazine.  This is a magazine dedicated to the electronics hobbiest.   I think I had a subscription to the magazine as far back as middle school age.  I have had a subscription off and on over
Category: Electronics Hobby

Engineering Tomorrow Book

Monday, 21 November 2005 9:38 P GMT-06
I recently read a book titled Engineering Tomorrow Today's Technology Experts Envision the Next Century by Janie Fouke, Trudy E. Bell and Dave Dooling.  The book was published in 1999 so some progress envisioned in the book is already underway. This
Category: Engineering Profession
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Fluorescent Light Bulb Experiment part 2

Sunday, 20 November 2005 9:16 A GMT-06
Yesterday another outside light burned out (the east garage light) and I replaced it with the same fluorescent bulb as described in the original post. This light bulb will have a little less average on time per day because it is not on a timer and we
Category: Home Projects Energy

Thermal shock of brittle materials (aka broken fireplace glass door) part 2

Friday, 18 November 2005 8:43 P GMT-06
This is a continuation of the previous article on the same subject. I have two additional things to add. The first is that a tack was discovered to have shot out from a piece of wood in the fire and hit the glass. This would be quite a bit more
Category: Home Projects
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Thermal shock of brittle materials

Friday, 18 November 2005 12:26 A GMT-06
An interesting thing happened today with my fireplace.  Shortly after starting the fire and letting it burn down to a point where more wood could be added, I opened the glass doors and added some wood.  Then I closed the glass doors again, at which
Category: Home Projects

Using unbalanced IEEE 1284 Cables for Differential Signaling

Friday, 11 November 2005 6:38 A GMT-06
The IEEE 1284 specification defines a shielded twisted pair cable that has the pairs controlled to 62 Ohms for unbalanced signaling. This means that each pair consists of a signal wire twisted with a ground wire. Can this type of cable be used wi
Category: High Speed Digital Design

Fluorescent Light Bulb Experiment

Thursday, 10 November 2005 12:13 A GMT-06
The utilities must be offering large rebates this year on the fluorescent light bulbs that fit in standard light sockets. I have seen them in several stores with instant rebates for about $1 each. I recently purchased some and wanted to track the
Category: Home Projects Energy

Free Continuing Education Material from MIT

Tuesday, 1 November 2005 7:19 P GMT-06
MIT has made some of the material from their courses available for free over the web at MITOPENCOURSEWARE. The material includes lecture notes, class demonstrations, assignments, and syllabi. The information is provided solely as a service to educa
Category: Engineering Profession