Driver to drive?

[Robert Baer]

Lord Duckfart wrote:

Hi people

Those cardiac straps transmit by a 5 kHz on/off -modulation magnetic
field by means of a 5-7ms burst for each heart beat. They make these
things in the millions. The range is about 3 feet.

I can easily make a RX coil for this, but as I want to make quite a
few, I am hoping someone here can point me to a manufacturer or a
source of some device that can take this RF signal, amplify & clean it
up, and pump it into a MPU that will be able to calculate all kinds of
stuff, like optimal krebs cycle zone.

I'll wager someone has made an ASIC that is an antenna, processor etc
all in one which is what they put into the watches.

You lose; at that frequency, the antenna must be external.

 

[Rolavine]

The devilishy funny Spehro Pefhany
Wrote:

the renowned rolavine@aol.com (Rolavine)

wrote:

Dyson is off his meds again, someone get the straight jacket. When he is
helpless we can show him pictures of Clinton and watch him squirm.

You are a sadist. With clamps and eye drops as in _Clockwork Orange_ ?
But what music would you play? Dixie Chicks? k.d. lang?

LOL, good one.

Frankly for torture I don't think you can beat Chinese Opera.

Rocky

 

[Rolavine]

From: kensmith@green.rahul.net (Ken Smith)

"Welcome to your new home. For breafast we have Eggs Clinton or Fench
toast. Today's lunch special is Hillary hash and a garden salad.
Tonight's dinner menu will be Steak Ala Gore and for afters we have a nice
German chocolate cake. Today's movie selections will be Bowling for
Columbine and On The Waterfront. We hope you enjoy your stay."

What no French Wine?

 

[Rolavine]

From: John Larkin

On Sat, 09 Oct 2004 05:31:14 GMT, Fred Bloggs <nospam@nospam.com
wrote:



Tom Seim wrote:
From today's Wall Street Journal:

One of John Kerry's claims to the White House is that his diplomacy
would better control nuclear proliferation in Iran and North Korea
than President Bush's alleged truculence. So it is newsworthy that a
spokesman for Tehran's Foreign Ministry has just dismissed out of hand
the centerpiece of Mr. Kerry's arms-control offer to the mullahs.

We'll just let WSJ stick with their business news and leave the
international security assessments alone. It is Bush's truculence that
has induced N.Korea and Iran to accelerate their weapons programs


Clinton signed a treaty with the K's in the early 90's, providing them
with oil in exchange for their not doing nuclear development. They
took the oil and played him for a fool from the outset. How can you
consider the current administration to be blamable for inheriting a
mess? The trends and forces we face now have been evolving for
centuries.

That is pretty much true, the N. Koreans developed a means for enriching

uranium without tipping their hats. The Clinton Admin checked several times and
found nothing. Since this can be done without setting off too many alarms they
got away with it. However, they did not toss out the inspectors, crack the
seals on a reactor, yank out the fissionable material, and start enriching
until late 2003, after Bush did his Axis of Evil.

N. Korea is a real challenge, only diplomacy is a good idea because of how
close population centers in S. Korea are to the border. An invasion would risk
millions of lives, I think we're stuck with diplomacy. The thing is they will
prob. cheat all they can.

Bush is promoting negotiation and diplomacy too, but he is counting on the
Chinese and some neighboring countries to do make the deal. The problem is, it
isn't working.

I guess that is Bush's rose colored glasses then?

 

[Don Klipstein]

In article <1Go9d.12392$na.2379@trnddc04>, James Sweet wrote:

US made might be better if you can find them. Often they all come from the
same factories, and the prices differ because of greed, not quality.

I think the only US made CFL's these days are LOA which are made very
poorly, likely to compete in price.

Most LOA compact fluorescents were being made in China last time I
checked.

In the 1990's I saw LOA ones with USA-made electronic ballasts, and I
saw a cold solder joint in one and loose-fitting contacts (bad enough to
cause problems) in one of only four non-China-made ones that I bought.

I have also had enough LOA lamps not give me as much light as claimed.
On one model I know of them reducing their claim of light output in
lumens, although they continued to claim that the now-2700 lumen one was
equal to a 200 watt incandescent.

- Don Klipstein (don@misty.com, http://www.misty.com/~don/cfx.html)

 

[Robert Monsen]

Rich Grise wrote:

On Saturday 09 October 2004 05:50 pm, Winfield Hill did deign to grace us
with the following:


John S. Dyson wrote...

kensmith@green.rahul.net writes:

Thank Gawd those nice folks at Diebold have made sure there is no paper
record to cause such a dispute. The software security is insured by Sly
Fox inc.

IMO, many of the electronic voting schemes seem incredibly outrageously
implemented. Even though it isn't important to distinguish, there is
definitely some kind of incompetency or insanity involved in the
so-called 'upgrades.'

How could a sane specification for a voting scheme in the current
climate, with current technological ignorance of technology in
politics/law/policing and the general public, for a voting scheme
practically avoid a physical
paper trail? Of course, it is THEORETICALLY and eventually completely
possible to define and develop a foolproof all-electronic scheme, it is
also almost impossible to make the foolproof scheme totally secure TODAY.
There is just too much technical ignorance in the legal, political and
even
in the technical fields. Even if the effects of the mass ignorance are
all resolved, then the dishonesty and lack of integrity of "modern
humanity" would render almost any scheme untrustworthy.

I agree 1000%.


A couple of elections ago, I went down to the county hall to register.
They asked me if I'd like to vote electronically. I said, "sure!" Get
it out of the way on the spot, and stay home and drink on election
day, sounds like a deal!

Two words: absentee ballot. I've been using them for years. Its nice to
have all your voter information around while you are voting. No rush, no
fear of electronic shenanagans. Since I'm a software guy, I would never
trust software for this kind of thing. That would be about as safe as
trusing national security to an anti-missle defense system written by
government contractors...

--
Regards,
Robert Monsen

"Your Highness, I have no need of this hypothesis."
- Pierre Laplace (1749-1827), to Napoleon,
on why his works on celestial mechanics make no mention of God.

 

[Clarence]

"Winfield Hill" <Winfield_member@newsguy.com> wrote in message
news:ck5vf702ma6@drn.newsguy.com...

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.

Let's be _very_ clear here, "Fred Boggs" hate speech is OKAY, but "John S.
Dyson's" is not?

What did I miss?

 

[Richard Henry]

"John Larkin" <jjlarkin@highlandSNIPtechTHISnologyPLEASE.com> wrote in
message news:6njjm0d61uu7h2er1h39c30i8lup4nlouj@4ax.com...

Agreed, all the things I mentioned were clearly unconstitutional, and
were morally wrong, and most were stopped by the courts. I think the
courts will still protect us from excesses. Remarkably, no
administration or congress that I know of has ever defied a Supreme
Court ruling.

<Chuckle>

My bad week at the airport:

On the trip out, I was "selected" for the full treatment: metal-detector
wand, full-body frisk (not, unfortunately, by the young lady inspector
present) and shoes placed in some sort of detection device.

On the trip back three days later, I left my ticket on a table (thoughtfully
provided so travellers can get all their papers and belongings in proper
order for inspection) on the wrong side of the security screen. As soon as
I noticed, so did the security people, and they paged me to come back up
against the stream to get it. A word of advice: don't move upstream. I was
physically barred from doing so by a civilian security agent, and threatened
by an armed National Guardsman for the offense of placing my briefcase on
the floor and walking the dozen or so feet back upstream to the point where
I was stopped.

My travelling companion, an Anapolis graduate and Navy Reserve Commander,
was highly amused. I was not.

The overall irony is that the purpose of the trip was to visit a vendor who
was assisting us in the design of a device to detect (real) terrorist
weapons.

 

[Ban]

Greg K wrote:

I need some help with the schematic/design of a digital power meter or
watt meter if you prefer. The objective is to be able to measure the
power output from an amp driving a speaker. I understand I need to
measure current, voltage, and cos(phi). The current and voltage should
be obtainable through A/D converters. Measuring the phase angle I am
not sure about yet. The output of the final result will be displayed
on 7-segment LEDs.

The way I see it is that a DMM can do voltage and current but can't
multiply them together and give you a power reading. I don't know what
chips a DMM might use to do this though. Right now I'd be happy with
some circuitry to measure voltage and current; multiply them and get a
display.

If you need any clarifications about this, please ask.

Greg,
you do not need to measure cos_phi, because it is contained in the other two
measurements. If you multiply the momentary values of voltage and current
with each other, the output will be the momentary power, which you will have
to process for RMS with the appropriate time constants. You could also use
an analog multiplier and feed its output to the true RMS DMM. Or(best) you
could use your soundcard to sample voltage and current and use some software
like matlab for processing.
--
ciao Ban
Bordighera, Italy

 

[Wouter van Ooijen (www.vo]

Geez, ya don't have to get snotty about it...

Sorry, I'll sneeze first.

To go on: referring to the logic diagram, notice that when the rest of
the input conditions are right, the state of the D input will be
entered into the lower flip-flop, (the master) and then, if
everything's cool when the clock goes high, the state of the master
will be entered into the second flip-flop, the slave. So, if your
question was, "is a MS-FF one FF, or two FFs?" , the answer is: "Two
FF's."

So in my terminology this is two latches (level-triggered devices)
coupled to make a FF. It is indeed an input to the discussion, but
IMHO it proves that at least the term FF is not universally understood
to mean the same thing: I call something a FF when it is
edge-triggered (OK, maybe halfway-voltage level triggered), I call it
a latch when it is (logic) level triggered. You call each (level
triggered part a FF.






Wouter van Ooijen

-- ------------------------------------
http://www.voti.nl
Webshop for PICs and other electronics
http://www.voti.nl/hvu
Teacher electronics and informatics

 

[Terry Pinnell]

davexnet02 <davexnetzerotwo@hooya!.com> wrote:

Xp always boots from the first unhidden primary partition
on Disk 0 and then the boot.ini menu is presented on the screen.

If the item you select either points to a different partition
and/or physical disk, you will always see "system" and "boot"
partitions.

"System" is the partition where XP initially loads and where the
NTLDR, ntdetect.com and boot.ini live, while "boot" is the partition
you're in once up and running.

Thanks Dave. It sounds like you're really savvy with partition and
boot stuff. As you'll have gathered, it's still something of a black
art to me <g>.

I had a devil of a time with all this. If you're interested, drop me
an email.

--
Terry Pinnell
Hobbyist, West Sussex, UK

 

[Robert Monsen]

Greg K wrote:

I need some help with the schematic/design of a digital power meter or
watt meter if you prefer. The objective is to be able to measure the
power output from an amp driving a speaker. I understand I need to
measure current, voltage, and cos(phi). The current and voltage should
be obtainable through A/D converters. Measuring the phase angle I am
not sure about yet. The output of the final result will be displayed
on 7-segment LEDs.

The way I see it is that a DMM can do voltage and current but can't
multiply them together and give you a power reading. I don't know what
chips a DMM might use to do this though. Right now I'd be happy with
some circuitry to measure voltage and current; multiply them and get a
display.

If you need any clarifications about this, please ask.

Power is energy per unit time. Energy is

integral (V*I) dt

where V and I are instantaneous values.

Power is

integral(V*I)/t

which is just the definition of the average of V*I.

Thus, if you use an analog multipler, and pass its output through a
resistor that is grounded with a cap, you'll get a value proportional to
real power.

However, if you measure V and I as RMS values, then V * I = whats called
"apparent power". In this case, you need to multiply by the 'power
factor', which is cos T, where T is the phase difference between V and I.

Irms * Vrms * cos T = real power

It comes out to the same thing.

--
Regards,
Robert Monsen

"Your Highness, I have no need of this hypothesis."
- Pierre Laplace (1749-1827), to Napoleon,
on why his works on celestial mechanics make no mention of God.

 

[Tony]

I really hate people who answer a legitimate request by saying that
the request is invalid. But I feel this subject deserves to be an
exception. It was done to death recently, and in case the OP didn't
see that discourse, the most obvious question is WHY would you want to
measure power to a speaker? Remember that power at the clipping point
is a function of load, frequency, waveshape, temperature, mains
voltage, time, phase (wrt mains voltage), even the position of the
speaker box in the room, and a whole lot more. So a 100W amp might put
out 10W or 200W average at the point of clipping, taking all those
things into account; a measurement of actual power, especially average
power, is next to useless.

Far more useful is a plain voltage detector and/or a power amp clip
detector (eg use a decent differential amp across the amp's input diff
stage - this voltage will rise sharply when clipping starts).

Unless of course there is some other reason for wanting to measure
actual power? If there is, don't even think about taking RMS V and I
values and somehow working out the power factor, as that method only
works for steady state sinusoids. You need the "instantaneous
multiplication" method.

On Mon, 11 Oct 2004 09:42:03 GMT, Robert Monsen
<rcsurname@comcast.net> wrote:

Greg K wrote:
I need some help with the schematic/design of a digital power meter or
watt meter if you prefer. The objective is to be able to measure the
power output from an amp driving a speaker. I understand I need to
measure current, voltage, and cos(phi). The current and voltage should
be obtainable through A/D converters. Measuring the phase angle I am
not sure about yet. The output of the final result will be displayed
on 7-segment LEDs.

The way I see it is that a DMM can do voltage and current but can't
multiply them together and give you a power reading. I don't know what
chips a DMM might use to do this though. Right now I'd be happy with
some circuitry to measure voltage and current; multiply them and get a
display.

If you need any clarifications about this, please ask.

Power is energy per unit time. Energy is

integral (V*I) dt

where V and I are instantaneous values.

Power is

integral(V*I)/t

which is just the definition of the average of V*I.

Thus, if you use an analog multipler, and pass its output through a
resistor that is grounded with a cap, you'll get a value proportional to
real power.

However, if you measure V and I as RMS values, then V * I = whats called
"apparent power". In this case, you need to multiply by the 'power
factor', which is cos T, where T is the phase difference between V and I.

Irms * Vrms * cos T = real power

It comes out to the same thing.

Tony (remove the "_" to reply by email)

 

[John Fields]

On Sat, 9 Oct 2004 19:56:27 +0000 (UTC), toor@iquest.net (John S.
Dyson) wrote:

In article <du2gm09nc66tun6a9thdfgnhu91uh0ka3r@4ax.com>,
John Fields <jfields@austininstruments.com> writes:
On 09 Oct 2004 15:12:20 GMT, rolavine@aol.com (Rolavine) wrote:

Dyson is off his meds again, someone get the straight jacket. When he is
helpless we can show him pictures of Clinton and watch him squirm.

---
Poor sonofabitch is helpless _now_.

You have already shown your hate -- please disprove your associating
with the Democrat party...

---
I'll do nothing of the sort, you witless twat, nor will I confirm any
association or do anything else which will help you delude yourself
into thinking that you're in a position from which you can wield the
_slightest_ authority.
---

I had saved off pages from your website
in the past for this reason.

---
Save away, maroon.
You're truly one disturbed puppy...

--
John Fields

 

[John S. Dyson]

In article <2sr153F1jmoohU1@uni-berlin.de>,
Dirk Bruere at Neopax <dirk@neopax.com> writes:

John S. Dyson wrote:

In article <ck92f805go@drn.newsguy.com>,
Winfield Hill <Winfield_member@newsguy.com> writes:

John S. Dyson wrote...

Winfield Hill writes:

John S. Dyson wrote...

... the very lousy traitor against America, John Kerry. ...
... If John Kerry did become president, it JUST MIGHT be time
for even those who are non-religious to pray for some divinity
to deliver us from John Kerry, who would be (at least partially)
elected based upon 'evil and destructive hatred.'

You are making a veiled suggestion that should John Kerry
be elected, he should be killed?

Of course not -- however, your comment does show that that
killing is in your mind.

Don't be silly.


Horrible little people like you seem to bring up murder. It must
already be something that you think about.


But please explain exactly what you mean by
divinity delivering us from John Kerry, should he win?


Why can't you consider possibilities other than the actions of
a murderer? Why do you keep on worrying about murder, where I hadn't
even considered it?

Well, I suppose it could come down to a tie again with Florida and Little Bro
counting hanging chads once again.

There were numerous abuses, especially by the Democrat controlled precincts.

Non-Americans might not realize that our voting precincts are often controlled
by the LOCAL party in control, and the areas with the most abuses were certainly
Democrat controlled. Just because Jeb was governor, that doesn't mean that
he had any significant control at the precinct or county level.

John

 

[Je m'ennuie]

Getelec <m.pelissou@get-electronique.fr> says...

Les 2 ampli-op font appel au męme modčle spice.
Au lancement de la simulation, Prospice m'indique une erreur d'affectation
des alims du 2čme ampli-op.
Il faut dire au 2čme ampli-op oů se trouvent les alims, qui sont sur le 1er
ampli-op.
Les 2 moyens envisageables sont par la commande SPICEPINS ou en modifiant le
modčle, et je ne sais pas comment y parvenir.

Merci de votre conseil

Getelec

*Plonk*. Dorénavant je ne verrai plus tes messages.

 

[Dirk Bruere at Neopax]

Rich Grise wrote:

On Saturday 09 October 2004 05:08 am, Dirk Bruere at Neopax did deign to
grace us with the following:


Scott Stephens wrote:


Dirk Bruere at Neopax wrote:


Rich Grise wrote:


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.


How mean. And I was going to nominate Rich to be the Duck-Bill Platypus
of S.E.D.


http://www.wunderland.com/WTS/Ginohn/cetera/hankisms.html


Perhaps its better to face the true God having ignorantly believed in a
false one, than face truth having believed in nothing, shirking
responsibility for risking being wrong in search for the truth.

And which Hank would that be, and do we have to kiss Karl's ass as well?


Another great lesson in politics we can learn in this "mean season". Get
your way by criticizing those in power because they aren't perfect. You
can always find some fault to blame, if you're not responsible for doing
any better.

We don't ask for perfect, just for not total moronic fuckup.


I'd even take a mere moronic fuckup. There's intentional death and
destruction going on, and GWB seems to be the figurehead. I'm really
saddened that doublethink has got so bad that people can convince
themselves that long-distance murder has anything to do with "defense."

Half the population is below average intelligence, and the other half are mostly
fools. They are busy building the future they deserve.

--
Dirk

The Consensus:-
The political party for the new millenium
http://www.theconsensus.org

 

[Dirk Bruere at Neopax]

Scott Stephens wrote:

Dirk Bruere at Neopax wrote:

Scott Stephens wrote:

Dirk Bruere at Neopax wrote:

Perhaps its better to face the true God having ignorantly believed
in a false one, than face truth having believed in nothing,
shirking responsibility for risking being wrong in search for the
truth.


And which Hank would that be, and do we have to kiss Karl's ass as
well?


As Hank is apparently the metaphor for God, perhaps we should choose
the atheist one, on account of Occam's Razor. Why bother with crude
symbols or concepts to wrap the real thing?



It's called 'Zen'


Looking up the Hank-ism for Zen, its not quite what I had in mind. I
like the part about one-lip kissing ass. As with most religions, it
presumes reason is useless.

I'm probably (much) closer to a Taoist ("All asses and all dollars are
all part of something important. We'd tell you more but you should
figure it out yourself").

Anyway, my choice is Asatru.
"Asatru (Norse) - Hank started a motorcycle gang...

...

Asatru is actually a good deal of fun, and you can't say that about
most religions.


Sounds like it, in the short-run anyways. And we're all dead in the long
run.

So there is no long run for any of us.
We Asatruar are interested in living the short run well.
Havamal:

For these things give thanks at nightfall:
The day gone, a guttered torch,
A sword tested, the troth of a maid,
Ice crossed, ale drunk.

--
Dirk

The Consensus:-
The political party for the new millenium
http://www.theconsensus.org

 

[CFoley1064]

Subject: Frequency to voltage converter with low pass filter.
From: kieronmichael@yahoo.co.uk (Kieron)
Date: 10/11/04 8:26 AM Central Daylight Time
Message-id: <fccbf5a7.0410110526.a56fb4d@posting.google.com

Does anyone have a copy (or can point me in the right direction) of a
circuit diagram for a frequency to voltage converter with a low pass
filter.

Hi, Kieron. You need to be more descriptive if you're going to expect a good
answer. It would help to specify the type of input signal, power supplies
available, expected voltage range output, and amount of acceptable ripple in
the voltage output.

If this is a lower frequency or industrial-type application, you might want to
look at the National Semiconductor LM2907/LM2917 voltage-to-frequency
converter. The low pass filter is built in to the converter dependent on
component selection. Read the data sheet and the appnote.

http://www.national.com/pf/LM/LM2907.html#Datasheet

It's not very expensive, reasonably linear in its response, and works well for
sub-audio and low audio range frequencies. And if you are getting too much
ripple, for this or any other f-v converter, you can always bite the bullet and
do some post-filtering with an op amp. Tradeoffs between ripple and response
time are always the critical issue in f-v converters.

Good luck
Chris

 

[john jardine]

"Travis Hayes" <tmh-SPAMISSPICEDHAM@nerdshack.com> wrote in message
news:2sjstiF1ldh5hU1@uni-berlin.de...

"john jardine" <john@jjdesigns.fsnet.co.uk> wrote in message
news:ck21po$irl$1@news8.svr.pol.co.uk...

"John Todd" <tser827@yahoo.com> wrote in message
news:Xns9579465772802tser827yahoocom@129.250.170.84...
John Woodgate <jmw@jmwa.demon.contraspam.yuk> wrote in news:qGZ
$nVMQpXYBFwrm@jmwa.demon.co.uk:

I read in sci.electronics.design that Rich Grise <null@example.net
wrote (in <rKa8d.4134$eq1.3864@trnddc08&gt about 'Is this antenna
article serious?', on Mon, 4 Oct 2004:


I thought you meant that there was a specific reference to a Bussard
ramjet.


For a really great story concerning a Bussard engine,
read Poul Anderson's "Tau Zero"!

I lost my copy of it maybe 30 years ago but somewhat annoyingly I've
been
stuck with an oft remembered but very hazy memory of a described
spaceship
data encoding system that compressed vast amounts of data into maybe
just
6
transmitted digits. The decoding and unzipping back on earth
apparently
took phenomenal time and computer power.
Any idea if this the same book?.
I'd love to reread and actually *understand* what Poul was on about .
regards
jhon

You are thinking of "Gold at the Starbow's End", by Fredrick Pohl.
The
process described was called "engodelization", I suppose after Godel. The
back-of-envelope version of this concept is to represent each character as
a
prime number, then send back the product of the primes. The receiver has
to
factor the received data to recover the primes used. For example, if I
sent
the number 2040, you would factor it to see that I sent 2 2 2 3 5 17, and
then figure out what I meant with those 6 numbers.


Thanks Travis. Yes, makes sense, that was it. Pleased I hadn't imagined it.

Bingo!. Just spotted it in the bookcase beckoning to me.
regards
john