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January 2018

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Subject:
From:
David Hillman <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, David Hillman <[log in to unmask]>
Date:
Fri, 26 Jan 2018 16:36:33 -0600
Content-Type:
text/plain
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Here is the Element Quiz Question:

The Question:
This element was once very important in electronics semiconductors but
those applications have been replaced by silicon semiconductors. This
element is a micro nutrient for animals and is found in infant formula.The
largest commercial use of this element (nearly 50%) is for the production
of glass. This element is rarely found in its elemental state in the
Earth's crust. The addition of this element to steels and copper improve
their machinability. Which element is being described?

The Answer:
The element is Selenium (Se). The demand for selenium by the electronics
industry is declining, despite a number of continuing applications. Its
photovoltaic and photoconductive properties are still useful in
photocopying, photocells, light meters and solar cells. Its use as a
photoconductor in plain-paper copiers once was a leading application, but
in the 1980s, the photoconductor application declined as more and more
copiers switched to organic photoconductors. Though once widely used,
selenium rectifiers have mostly been replaced (or are being replaced) by
silicon-based devices. The most notable exception is in power DC surge
protection, where the superior energy capabilities of selenium suppressors
make them more desirable than metal oxide varistors.


The winner of the quiz is Tom Carroll, Boeing and he will get the services
of Clumpy and Kloumpios for the week.


So far Clumpy and Kloumpios have done the following:

Past Quiz winners/tasks:
Week 1 Ravinder Ajmani, Western Digital
Week 1 Ron Feyereisen, SigmaTron Intl.
Week 2 Louis Hart, Compunetics
Week 3 Mark Kostinovsky, Schlumberger Ltd.
Week 3 John Burke
Week 4 Drew Meyer, Benchmark Electronics
Week 5 No Winner - no correct responses!
Week 6 Bhanu Sood, NASA
Week 7 Keith Calhoun, Sopark Corp
Week 7 Ian Fox, Rolls Royce
Week 8 Leland Woodall
Week 8 David Bealer, SMT
Week 9 Tom Carroll, Boeing
Week 10 Louis Hart, Compunetics
Week 11 Tom Carroll, Boeing
Week 11 Scott Decker, UTAS
Week 12 Matthias Mansfeld, Mansfeld Elektronik PCB Design and Assembly
Week 13 No Quiz,
Week 14 Matthias Mansfeld, Mansfeld Elektronik PCB Design and Assembly
Week 15 Bhanu Sood, NASA
Week 16 John Maxwell
Week 17 Leland Woodall
Week 18 Leland Woodall
Week 19 Tom Carroll, Boeing
Week 20 Robert Kondner
Week 21 Tom Brendlinger, ClearMotion Inc.
Week 22 Carl Van Wormer, Cipher Engineering LCC
Week 23 Juliano Ribeiro, DATACOM
Week 24 Gerry Gagnon, FLIR Commercial Systems
Week 25 Graham Collins, Sunsel Systems
Week 26 Joyce Koo, IPC International
Week 26 Todd MacFadden, Bose
Week 27 Bhanu Sood, NASA
Week 28 Leland Woodall
Week 29 Mordechai Kirshenbaum
Week 30 Leland Woodall
Week 31 Leland Woodall
Week 32 Steve Gregory
Week 33 Leland Woodall
Week 34 Jerry Dengler, Pergamon Corp
Week 35 Frank Kimmey, VeriFone Inc
Week 36 Graham Collins, Sunsel Systems
Week 37 Richard "Dean" Stadem
Week 38 Leland Woodall
Week 38 Tom Carroll
Week 39 Matthias Mansfeld, Mansfeld Elektronik PCB Design and Assembly
Week 40 Leland Woodall
Week 41 Tom Carroll
Week 42 Matthias Mansfeld, Mansfeld Elektronik PCB Design and Assembly
Week 43 Joyce Koo
Week 44 Russell Kido, Practical Components

Week 45 Leland Woodall
-You're a good guy, Frank.  I can use them both to help me prepare for
Christmas.  I'm so far behind it's not even funny!

Week 45 Frank Kimmey, VeriFone Inc
- Leland,  take 'em both, I have to travel next week and the boys can be a
pain when by themselves (like getting into mischief)

Week 46 Ian Fox, Rolls-Royce Control Systems
- Oh goody, plenty of microsections to do on some long term thermal cycle
samples so that will keep them busy for the week. And a happy new year to
all in TechNet land.

Week 47 Fred Cox, Bluering Stencils
- Great! We can use the help here in South Jersey. The boys will have to
hurry. Lots of stencils to get out. If they do a great job, maybe I'll take
'em to the Eagles victory over the Vikings.

Week 48 Tom Carroll, Boeing
- assisted with ????


I hope everyone has a awesome week.

Dave Hillman
Rockwell Collins
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