sci.electronics.design Google Group

Suggestion...

to-email-use-the-envelope-i...@my-web-site.com (Jim Thompson) — Fri, 09 Jan 2009 23:57:46 UT

Suggestion...
Wouldn't a simple solution to the AGW controversy be to dispose of
anyone who needs an antiperspirant ?:-)
...Jim Thompson

Circuit to output difference in temperature between two thermistors

acann...@gmail.com — Fri, 09 Jan 2009 22:11:18 UT

Im sure this has been done before, right?
Two NTC thermistors.
10k @ 25C
Beta = 3380
I'd like a circuit which outputs a voltage which is the difference in
temperature between the two resistors.
But it needs to be linear.
I.e.
1 degree difference = 0.1V
10 degree difference = 1V
100 degree difference = 10V

How are computer games reading potentiometers now?

mylastn...@mycompanyname.com (Gary Peek) — Fri, 09 Jan 2009 21:48:31 UT

Someone asked me about designing something to read two
potentiometers to provide input to his custom program
running on a Windows machine. But why re-invent the wheel?
What is the state-of-the-art now for computer games and
other things like flight simulators reading pots? Used
to be you just insured that the user had a game port board

Bypassing

jjlar...@highnotlandthistechnologypart.com (John Larkin) — Fri, 09 Jan 2009 20:41:41 UT

We recently did a GHz bandwidth optical/electrical converter, and used
a THS4303 output opamp. Per some appnote or something, the designer
bypassed each supply rail with one 0.1 uF 0603 and one 47 pF 0402. The
step response rings like hell, and the fix is to replace the 0402's
with bigger (like, another 0.1 uF) caps.

Video Switch IC for component video (not composite!)

ke...@kmillar.co.uk (kmillar) — Fri, 09 Jan 2009 18:03:12 UT

Hi
Can anyone recommend a good video switch IC, or chipset, for switching
Component (YPbPr) video?
Something which could build, say, a 4 x 1 matrix would be good.
TIA.

why not to buy a Ford

jjlar...@highnotlandthistechnologypart.com (John Larkin) — Fri, 09 Jan 2009 17:11:17 UT

[link]
John

OT: The Coronation

n...@example.net (Richard The Dreaded Libertarian) — Fri, 09 Jan 2009 16:54:12 UT

So, when they install Barry Christ as our new Commissar, do you suppose
he'll walk across the reflecting pool on his way to the Oval Office?
Hey! He's the first President Barry since Goldwater! ;-P
Cheers!
Rich

OT Universal?

r...@example.net (Rich Grise) — Fri, 09 Jan 2009 16:47:04 UT

[link]
Cheers!
Rich

Water detection cable

gdo...@gmail.com (GlennDoten) — Fri, 09 Jan 2009 14:38:34 UT

Does anyone know who manufactures those water sensor cables that are
placed on the floors of datacenters? I've seen the ones that have two
wires in them, although these wires appear to be more like very thin
steel-looking cables of some sort. Each of those wires has sort of a
cloth jacket and then the two jacketed wires are covered with a

Space Aliens take a dislike for wind turbines !

rabbitsfriendsandrelati...@hotmail.com (Eeyore) — Fri, 09 Jan 2009 07:46:23 UT

One saw orangey-yellow spheres skimming across the sky.
Another reported a 'massive ball of light' with 'tentacles going right
down to the ground'.
Then witnesses told of an earsplitting bang at 4am. Come dawn and the
plot thickens.
At the nearby wind farm one of the 60ft blades from a 200ft turbine was

Specially for the Slow Man

rabbitsfriendsandrelati...@hotmail.com (Eeyore) — Fri, 09 Jan 2009 07:35:09 UT

[link]
You are probably wondering whether President-elect Obama owes the world
an apology for his actions regarding global warming. The answer is, not
yet. There is one person, however, who does. You have probably guessed
his name: Al Gore.

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pugal...@gmail.com (machi) — Fri, 09 Jan 2009 06:27:48 UT

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Battery charging with intermittant power source

scottm...@gmail.com (Scott Ronald) — Fri, 09 Jan 2009 03:41:18 UT

Hi I am wondering about the best way to charge lead acid batteries from
a source that cannot be relied on for constant power such as wind, or
solar. So far I am looking at 2 ways to do this:
Cycle charging
For this method I need a constant current, until the charge voltage is
reached, then maintain the charge voltage for a time, or until the