Driver to drive?

[John Woodgate]

I read in sci.electronics.design that Brian Raab <kaisers_sun@yahoo.com>
wrote (in <8d001dc6.0410071808.6e3f9c4f@posting.google.com&gt about 'I
designed a brain-enhancement machine ! .. .', on Thu, 7 Oct 2004:

Tested it on myself, unfortunately something went wrong and it reduced
my IQ from 150 to 15.

What can I do now?

Become a politician.
--
Regards, John Woodgate, OOO - Own Opinions Only.
The good news is that nothing is compulsory.
The bad news is that everything is prohibited.
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk

 

[Scott Stephens]

Brian Raab wrote:

Tested it on myself, unfortunately something went wrong and it reduced
my IQ from 150 to 15.

What can I do now?

Reverse the polarity of the power, or shift the phase 180 degrees, if
you are still competent enough to, that is.

Advice is worth what you pay for it

--
Scott

**********************************

DIY Piezo-Gyro, PCB Drill Bot & More Soon!

http://home.comcast.net/~scottxs/

Those who sow excuses shall reap excuses

**********************************

 

[Rich Grise]

On Monday 04 October 2004 07:59 pm, Bill Sloman did deign to grace us with
the following:

John Woodgate <jmw@jmwa.demon.contraspam.yuk> wrote in message
news:<xin5O2BqqQYBFw7i@jmwa.demon.co.uk>...
I read in sci.electronics.design that Rich Grise <null@example.net
wrote (in <xa28d.3804$na.1297@trnddc04&gt about 'Marketing blurb -
bullsh*t baffles etc', on Mon, 4 Oct 2004:

No, commietaters is what vodka is distilled from.

You've been infected by one of my memes, 'pun77', and Bill Sloman will
grumble at you.

Your meme produces techically better puns, but they aren't funny - if
Rich Grise has been infected by your meme it would seem to have
mutated in transmission.

I had to read this about four times - you're saying something good

here, right?

Thanks,
Rich

 

[John Woodgate]

I read in sci.electronics.design that Scott Stephens
<scottxs@comcast.net> wrote (in <2fs9d.90106$He1.33387@attbi_s01&gt about
'safe electronic brain stimulator', on Fri, 8 Oct 2004:

The Persinger stuff is pretty far out, although some other studies have
demonstrated people are sensitive to sub-gauss fields. If you can't find
them (the credible rather than crank links on my web site) I suppose I
could try digging some up.

I don't have any practicable way of getting the papers cited by Don
Taylor, so if you have web site links, that would be helpful. But I'm
going to be off-line for a few days, so don't expect a swift reaction.

If you could e-mail me, at <jmw[at]jmwa dot demon dot co dot uk>, that
would be helpful, because I will unsubscribe from all newsgroups to
avoid getting 4000 articles to look at when I return.
--
Regards, John Woodgate, OOO - Own Opinions Only.
The good news is that nothing is compulsory.
The bad news is that everything is prohibited.
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk

 

[SioL]

"Paul Burke" <paul@scazon.com> wrote in message
news:2smu4tF1n9a4fU1@uni-berlin.de...

Perceive the happy moron: he doesn't give a damn.
I wish I were a moron. Good God! Perhaps I am!

Paul Burke

Well, are you generally a happy untroubled person?

SioL

 

[Spehro Pefhany]

On 7 Oct 2004 22:23:31 -0700, the renowned mrmonett@yahoo.com (Mike
Monett) wrote:

John Larkin <jjlarkin@highSNIPlandTHIStechPLEASEnology.com> wrote

[...]

Oh, arcane tidbit: you can linearize an RTD by putting a negative
resistor across it. It's some number of kohms... can't recall the
exact value.

John

Here's one way to do it:

"Positive feedback provided by R2 linearizes the thermometer's response curve"

http://www.elecdesign.com/Articles/ArticleID/4379/4379.html

And another way:

"Efficient Algorithms Improve The Linearization Of Platinum RTDs"

http://www.elecdesign.com/Articles/ArticleID/4793/4793.html

Or your can add it in series:

"Two-material linearized temperature sensor"

http://www.elektrorevue.cz/clanky/02018/english.htm

Of course, Speff probably has these methods all memorized by now

Mike

Usually I have to deal with leadwire compensation as well. ;-)


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com

 

[Winfield Hill]

John Woodgate wrote...

John S. Dyson wrote...
Hatred is problematic.

No, it's not 'problematic'. That's 'touchy-feely' woolly-mindedness.
Hatred is a manifestation of evil, and the simplest way to explain what
the concept of 'evil' is.

Hatred does no good to anyone, and in particular it distorts the
thinking of the hater, while either having no effect on the hatee or
resulting in assaults on him/her or his/her interests.

Fine, but let's be _very_ clear, just because John S. Dyson plunks
the "leftist hate-filled creatures" label down on the table and
so very hatefully applies it to me and others here in this group,
does not make it so. We're trying to have a discussion and air
our opinions at a time when it's sorely needed and relevant, and
the evil characterizations from John S. Dyson are not helpful.


--
Thanks,
- Win

(email: use hill_at_rowland-dotties-org for now)

 

[Dan Major]

There is also a document on the web somewhere that details the emi put
out by various video cameras, which can be detected (provided they are
operating) by near-field magnetic probes with sensitive amplifiers.

I've made emf detectors with nothing more than an LM386, a few discrete
components, and a piece of wire. I had a simple RC hi-pass network on the
front end so line AC wouldn't set it off. Running at full gain, and
sending the rf input into the positive input of the amp, it will go into
self-oscillation. An LED or speaker at the output of the amp will let you
know when you're in the vicinity of an rf field. The amplitude and
ferquency of the sound coming out of the speaker will give you a *very*
rough idea of the type of field you're near. This picks up everything from
electronic watches and digital calculators to cell phones and computers.
Tune the antenna (length) to increase sensitivity/gain for a particular
frequency.

--
Sooner dot boomer at gbronline dot com

 

[Mike Monett]

Spehro Pefhany wrote:

[...]

Usually I have to deal with leadwire compensation as well. ;-)

Best regards,
Spehro Pefhany

Speff, what on earth do you do that requires such high precision? Nuclear
reactors in Pickering? Jet turbines at P&W? Steel manufacturing in
Hamilton?

Mike Monett

 

[Winfield Hill]

Marco wrote...

Hi, thanks for the hints. For my application I have to swap all
this frequency range with a sine wave continuously, in order to
study some chemical properties of a material.

Why don't you purchase an RF sweep generator on eBay? If you want
to have full computer control over your experiment, you can get a
synthesized signal generator, with a GPIB interface. We just got
two HP 8657A, which go to 1GHz, for a good price. Older models
like the 8656A and 8656B are usually being offered, for example,
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3843040819

They are big, heavy units.


--
Thanks,
- Win

(email: use hill_at_rowland-dotties-org for now)

 

[Bob Stephens]

On 7 Oct 2004 19:08:12 -0700, Brian Raab wrote:

Tested it on myself, unfortunately something went wrong and it reduced
my IQ from 150 to 15.

What can I do now?

Revel in your newfound femininity.

 

[Spehro Pefhany]

On Fri, 08 Oct 2004 08:38:23 -0400, the renowned Mike Monett
<no@spam.com> wrote:

Spehro Pefhany wrote:

[...]

Usually I have to deal with leadwire compensation as well. ;-)

Best regards,
Spehro Pefhany

Speff, what on earth do you do that requires such high precision? Nuclear
reactors in Pickering? Jet turbines at P&W? Steel manufacturing in
Hamilton?

Mike Monett

Well, Daimler-Chrysler and Hewlett-Packard have a whack of mine, but
it doesn't really take that much lead length to affect the accuracy of
a Pt100 sensor. DIN-curve units change 385 mOhms per K. AWG16 wire has
a resistance of 4.2 ohms per 1000 feet at 25°C, so it only takes about
50' of relatively thick wire (or 8' of AWG24) to cause a
temperature-sensitive offset of 1°C. The sensor elements are stable to
far better than that, of course.

There are also less standard sensors as low as 25 ohms. I don't get to
pick the nominal resistance, it's an industry standard. Field tweaking
of the calibration is unthinkable in most situations. We just want the
instrument and sensor to work together, interchangeably, with no fuss.

The more picky scientific applications use a Kelvin setup, but for
industrial applications, a first-order correction is good enough.


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com

 

[colin]

"Brian Raab" <kaisers_sun@yahoo.com> wrote in message
news:8d001dc6.0410071808.6e3f9c4f@posting.google.com...

Tested it on myself, unfortunately something went wrong and it reduced
my IQ from 150 to 15.

What can I do now?

Dye your hair turn blond to match.

Colin =^.^=

 

[John Larkin]

On Fri, 08 Oct 2004 10:35:40 -0400, Spehro Pefhany
<speffSNIP@interlogDOTyou.knowwhat> wrote:

On Fri, 08 Oct 2004 08:38:23 -0400, the renowned Mike Monett
no@spam.com> wrote:

Spehro Pefhany wrote:

[...]

Usually I have to deal with leadwire compensation as well. ;-)

Best regards,
Spehro Pefhany

Speff, what on earth do you do that requires such high precision? Nuclear
reactors in Pickering? Jet turbines at P&W? Steel manufacturing in
Hamilton?

Mike Monett

Well, Daimler-Chrysler and Hewlett-Packard have a whack of mine, but
it doesn't really take that much lead length to affect the accuracy of
a Pt100 sensor. DIN-curve units change 385 mOhms per K. AWG16 wire has
a resistance of 4.2 ohms per 1000 feet at 25°C, so it only takes about
50' of relatively thick wire (or 8' of AWG24) to cause a
temperature-sensitive offset of 1°C. The sensor elements are stable to
far better than that, of course.

There are also less standard sensors as low as 25 ohms. I don't get to
pick the nominal resistance, it's an industry standard. Field tweaking
of the calibration is unthinkable in most situations. We just want the
instrument and sensor to work together, interchangeably, with no fuss.

The more picky scientific applications use a Kelvin setup, but for
industrial applications, a first-order correction is good enough.


Best regards,
Spehro Pefhany

Somewhere in the litter here I have a dual-opamp, linearized, 3-wire
RTD signal conditioner. I could post it if there was interest, and if
I can find it.

John

 

[Rich Grise]

On Friday 08 October 2004 07:57 am, Wouter van Ooijen (www.voti.nl did deign
to grace us with the following:

- Win

Now that is an answer from a source that I trust

On to the next question, which is less well-defined I am afraid. The
term master-slave flip flop, should this describe

1. Two flip-flops, which (in my idea) are edge-triggered (level
triggered would be a latch), so the total thing would be edge
triggered with a delayed output, or

2. Two latches, so the total thing is an edge-triggered FF.

To summarize: is a MS-FF one FF, or two FFs?

It's two flip-flops, which is where the master/slave bit comes

in. I've never understood that level-trigger stuff, being a black-box
seat-of-the-pants kind of guy, I figure if the output changes when
the level changes, well, it's an edge when the level changes, so
what's the diff?, but I think it has something to do with re-syncing
stuff - with an edge-trigger, you clean up all the prop delays of
previous level-triggered stuff, or something like that. From my POV,
your description of the difference between edge- and level-triggering
is as good as, or better than mine.

HTH!
Rich

 

[John Woodgate]

I read in sci.electronics.design that Spehro Pefhany <speffSNIP@interlog
DOTyou.knowwhat> wrote (in <6nbdm09f2e9338ci0o7btl10561qctd4ti@4ax.com&gt
about 'Something to ponder', on Fri, 8 Oct 2004:

I'd rather you posted something on generating precise nanosecond-range
delays. ;-)

Lengths of coax?
--
Regards, John Woodgate, OOO - Own Opinions Only.
The good news is that nothing is compulsory.
The bad news is that everything is prohibited.
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk

 

[Rich Grise]

On Friday 08 October 2004 01:01 am, John Woodgate did deign to grace us with
the following:

I read in sci.electronics.design that Bill Sloman <bill.sloman@ieee.org
wrote (in <7c584d27.0410071644.545e6bcf@posting.google.com&gt about 'What
are "memes"? nt', on Thu, 7 Oct 2004:
I was doing a Ph.D. in chemistry at the time,
which would seem to be the wrong basis for a well-apying career in
comedy.

Yes, you should have become the Australian Borodin.
--

I'm still trying to figure out what "well-apying" means. ;-)

Thanks,
Rich

 

[Rich Grise]

On Friday 08 October 2004 05:32 am, John Woodgate did deign to grace us with
the following:

I read in sci.electronics.design that Winfield Hill
Winfield_member@newsguy.com> wrote (in <ck5vf702ma6@drn.newsguy.com&gt
about 'The Rational Mind of Fred Bloggs', on Fri, 8 Oct 2004:

Fine, but let's be _very_ clear, just because John S. Dyson plunks
the "leftist hate-filled creatures" label down on the table and
so very hatefully applies it to me and others here in this group,
does not make it so. We're trying to have a discussion and air
our opinions at a time when it's sorely needed and relevant, and
the evil characterizations from John S. Dyson are not helpful.

As far as I know, he started it some time after Fred Bloggs posted
equally distasteful material. I suppose that you do not support Fred's
approach to serious debate, either.
--

I wonder if anyone finds it noteworthy that if you took some of Mr.
Bloggs's writing, and some of Mr. Dyson's writing, and swapped the
names/parties, you wouldn't be able to tell the difference? ;-)

And somehow I feel like I had a finger in the heavy polarization going
around, but that could be simple self-importance.

Cheers!
Rich

 

[Rich Grise]

On Friday 08 October 2004 01:26 am, Scott Stephens did deign to grace us
with the following:

The best thing to do is, if they assholes are worth tolerating, is to
find someone weaker and torment the shit out of them. Give as good as
you get.
....
But in the end, its best not to associate with assholes.

Good Idea.

Plonk.

 

[Rich Grise]

On Friday 08 October 2004 05:37 am, Spehro Pefhany did deign to grace us
with the following:

On Fri, 08 Oct 2004 08:27:26 +0100, the renowned Paul Burke
paul@scazon.com> wrote:

Robert Morein wrote:

"Brian Raab" <kaisers_sun@yahoo.com> wrote in message
news:8d001dc6.0410071808.6e3f9c4f@posting.google.com...

Tested it on myself, unfortunately something went wrong and it reduced
my IQ from 150 to 15.

What can I do now?


Don't worry, be happy



Perceive the happy moron: he doesn't give a damn.
I wish I were a moron. Good God! Perhaps I am!

Paul Burke

He couldn't be a moron. A moron has an IQ in the 50-69 range. An
imbecile is in the 30-49 range, and an idiot is all below that.

Hence the expression "idiot studying to be a moron".

Didja hear about the moron that drove his new car off the cliff to

test his new air brakes?