Driver to drive?

[JosephKK]

On Sun, 9 Aug 2009 07:26:26 -0700 (PDT), MooseFET <kensmith@rahul.net>
wrote:

On Aug 8, 10:04 pm, Paul Keinanen <keina...@sci.fi> wrote:
On Sat, 08 Aug 2009 23:56:38 -0400, Jamie

jamie_ka1lpa_not_valid_after_ka1l...@charter.net> wrote:

And why cars now run 12 instad of 6 volts.
Actually, the voltage was raised to save on copper, weight and space.

Which is the reason, 48 volt electrical systems in car's was once a
subject and may still happen one day.

When was the 48 V system discussed ?

The nominal 48V was really 56V. It was 4 nominal 12V batteries in
series.
There is still talk of it in the area of hybrid cars.


The 42 V (3 x 14 V) system was a hot debate subject in the beginning
of this century.

Paul

I heard that they had gone much higher than that in full electrics,
like 320 V. I also heard that it had something to do with leveraging
existing variable frequency drive electronics and motors.

 

[JosephKK]

On Sat, 8 Aug 2009 16:50:17 -0700, "Joel Koltner"
<zapwireDASHgroups@yahoo.com> wrote:

"Jim Yanik" <jyanik@abuse.gov> wrote in message
news:Xns9C61BCCC54000jyanikkuanet@74.209.136.87...
http://townhall.com/columnists/MikeAdams/2009/08/05/a_health_quiz_for_barry

That appears to be pretty legitimate questioning of some of the provisions in
Obama's plan -- and while some questions don't have simple true/false answers
("Have you stopped beating your wife yet?"), it's definitely worth reading.
Thanks for the link...

I suspect that:

1) Some of the "worrisome" text he quotes are just poorly written and no grand

That is contrary to supreme court decisions.

power play is intended (e.g., the gov't having access to your account --
really could be intended just to mandate that the gov't. *can* accept
electronic payments, not that you'll be *required* to do so)
2) Other bits might not actually be anything new, just things most people are
unaware of (e.g., audits of self-insured employers -- I wouldn't be surprised
if this were already required)

I can answer his questions about rationing: Yes, the government will
absolutely ration health care, just as all private insurers do today. This is
unfortunate, but it's impossible to not ration health care given the finite
resources we have as a country (particular when those "resources" begin as
someone else's private property and are then involuntarily taken in the form
of taxes). Of course, the devil is in the details -- I wouldn't want to be
the PR guy who explains why grandma who's 75 won't be able to get a tax
payer-funded kidney transplant whereas grandpa who's 74 will...

---Joel

Wow. Not even my 28 yo daughter is so stunningly ignorant.

 

[JosephKK]

On Sun, 09 Aug 2009 15:27:12 -0700, Joel Koltner
<zapwireDASHgroups@yahoo.com> wrote:

Jim Yanik wrote:
"Joel Koltner" <zapwireDASHgroups@yahoo.com> wrote in
I wouldn't be surprised if -- assuming an Obamaesque health care plan
passes -- plastic surgeons see an uptick in sales.
yes,all the deviants wanting expensive sex-change ops,which WILL be covered
under Obamacare.

I was thinking more along the lines of breast implants/tummy
tucks/face lifts based on lower-income folks having a bit more free cash
around, but you might be right!

I do think there's something fundamentally wrong with our culture today
that suggests there's something wrong with old people looking... old.
Initially it was just actresses/fashion models going under the knife to
look younger than their years, but I've read that these days a lot of
people in jobs where their appearance has little or no bearing on their
performance whatsoever do so as well. E.g., Sally figures she'll have a
better shot at being promoted to V.P. of the bank branch she works at if
she gets rid of those crows' feet. Sick. (I suppose this is yet another
symptom of how little technical ability is actually required for many
jobs these days, thanks in large part to advances in technology. If
Sally and all of her co-workers have pretty much identical productivity
levels -- since the computers are doing all the "real" work anyway --,
what else is there left to judge?)

I'm thankful that in engineering it's obvious that there is a very wide
range of abilities out there.

snip

So bring us some engineering.

 

[Rich Grise]

On Fri, 14 Aug 2009 18:21:17 -0700, Mycelium wrote:

On Fri, 14 Aug 2009 19:17:41 GMT, Rich Grise <richgrise@example.net
wrote:

And, like the series Xmas lights of yore, when one goes out, they all
go out.

Not if it fails shorted.

NO! You said "and like the Xmas lights..." which means that you were
talking about arc lamps in series. THAT is what my comment is about.

No, I said, "like the Xmas lights of yore," i.e., about fifty years ago.

(which I also wrote quite clearly.)

Ergo, I took you at your word from your response to it.

So go take your nap, and quit being so bitchy.

Thanks,
Rich

 

[JosephKK]

On Sat, 8 Aug 2009 22:39:46 -0500, "Tim Williams"
<tmoranwms@charter.net> wrote:

"Vladimir Vassilevsky" <nospam@nowhere.com> wrote in message
news:I5udnTpBuf_y3ePXnZ2dnUVZ_qOdnZ2d@giganews.com...
Customer service does care.

You wish! Half of all automotive amplifiers out-and-out lie. For instance,
I have a "240W" car amp here which has a 5A fuse in the front. It uses a
pair of TA7250's inside. One of the most humerous I've seen claimed "250W
Class A MOSFET" output; it similarly had a bipolar chipamp inside. At least
I haven't seen one with buzzwords like "billet" emblazoned on it.

Reminds of when as a kid i saw an amplifier rated at 100 W that was 2"
by 5" BY 8". Then i saw that the rating was PMPO. But that was 40
years ago. A lot of such ratings today are "marketing magic" of the
same kind

Maybe the high end stuff has responsible design, I don't know. I do know
I've seen lots of crap. Core saturation (if the designers even consider
it.. or even *know* about the phenomenon!), is likely low on their
priorities.

Tim

Not to be picky or anything, but who uses an output transformer any
more?
High output units? Who can dissipate hundreds of watts inside a
dashboard?

 

[JosephKK]

On Sat, 08 Aug 2009 23:07:07 -0500, Vladimir Vassilevsky
<nospam@nowhere.com> wrote:

Tim Williams wrote:

"Vladimir Vassilevsky" <nospam@nowhere.com> wrote in message
news:I5udnTpBuf_y3ePXnZ2dnUVZ_qOdnZ2d@giganews.com...

Customer service does care.


You wish! Half of all automotive amplifiers out-and-out lie. For instance,
I have a "240W" car amp here which has a 5A fuse in the front. It uses a
pair of TA7250's inside. One of the most humerous I've seen claimed "250W
Class A MOSFET" output; it similarly had a bipolar chipamp inside. At least
I haven't seen one with buzzwords like "billet" emblazoned on it.
Maybe the high end stuff has responsible design, I don't know. I do know
I've seen lots of crap. Core saturation (if the designers even consider
it.. or even *know* about the phenomenon!), is likely low on their
priorities.

Among the other things, I design the audio amplifiers. My clients are
the respectable companies, and they are honest and picky about the
performance parameters. Although it is more of the consumer grade stuff,
it sustains the rated power with the rated distortion at the rated load
for the reasonable period of time. There is certainly a lot of junk on
the market, especially as the mass market is driven by the cost;
fortunately there are still people who know the difference.

Vladimir Vassilevsky
DSP and Mixed Signal Design Consultant
http://www.abvolt.com

Yup, and a large chunk are engineers.

 

[Richard the Dreaded Liber]

On Mon, 17 Aug 2009 04:36:02 -0700, TralfamadoranJetPilot wrote:

We also need to take a stronger stance on North Korea and Iran's
attempts to become armed with nuclear devices or the technology to make
them.

Just lobby for more ABL's:
http://www.boeing.com/defense-space/military/abl/index.html

We've only got the one prototype, and it's due for a field test, but
against nuclear terrorism, one can't be too careful, can one?

Cheers!
Rich

 

[JosephKK]

On Sun, 9 Aug 2009 04:07:10 -0700 (PDT), powerampfreak
<powerampfreak@hotmail.com> wrote:

On 9 Aug, 12:46, "Phil Allison" <phi...@tpg.com.au> wrote:
"powerampfreak"

** Beware -  Hotmailer plus Google Groper.

But if heading for high quality realiable stuff, why not go to current
mode control to eleminate the risk of flux imbalance?

** You have no proof that any such problem really exists at all  - cos
staring a schems does not fucking tell you.

  Piss off.

.....  Phil

Excuse me? Don't like current mode control ?

I seriously doubt that you have a clue of what your posting about.

 

[Tim Williams]

"JosephKK" <quiettechblue@yahoo.com> wrote in message
news:2qaj85hf5cimqihaqmo1rrhofj1jbbk84j@4ax.com...

Reminds of when as a kid i saw an amplifier rated at 100 W that was 2"
by 5" BY 8". Then i saw that the rating was PMPO. But that was 40
years ago. A lot of such ratings today are "marketing magic" of the
same kind

Wow, I didn't know they used PMPO that long ago. That's hardly out of the
tube age. I thought marketing was just discovering "watts RMS" back then!

Not to be picky or anything, but who uses an output transformer any
more?

Just to be sure, we've been talking about the switching supply's output
transformer. But actual audio outputs? Those went out of style in the
*early* 60s.

Last beast I saw with real iron must be my dad's Mcintosh something power
amplifier -- good for over 300 real watts into any kind of load you want.
He bought it in the 70s. They put autotransformers at the end, so the
amplifier always drives around 3 ohms, and you can connect anything from 2
to 32 ohms.

One might theorize this is the reason why Mcintosh hardware sounds "so good"
(in the tubophile sense) -- the only fundamental difference between your
average tube and SS amps is the output transformer.

High output units? Who can dissipate hundreds of watts inside a
dashboard?

Well, those 1kW+ amps are fairly hunky, and they have a lot of aluminum to
hold in the heat from peak loads (class B giving ~60% efficiency, that's
easily 1.6kW input and 600W dissipated). Definitely not continuous duty,
last one I saw used fullpack TO-3P outputs. Hardly 50W capacity in one of
those. There were 8 of them, not quite enough for all that dissipation,
especially after ten or twenty seconds when the chassis starts getting
really hot.

But that's more of a floor-of-the-trunk environment, too. I don't know if
they make in-dash radios over 50W (being the 12V bridged into 4 ohm rating).

Tim

--
Deep Friar: a very philosophical monk.
Website: http://webpages.charter.net/dawill/tmoranwms

 

[JosephKK]

On Mon, 10 Aug 2009 17:45:42 -0600, "Don T" <-painter-@louvre.org>
wrote:

"daestrom" <daestrom@twcny.rr.com> wrote in message
news:h5q7en12lar@news2.newsguy.com...
Don T wrote:
"Richardson" <member@newsguy.com> wrote in message
news:JYWdncZmtr_K2uPXnZ2dnUVZ_tOdnZ2d@posted.toastnet...

Again power is not measured in AMP, but in WATT you stupid jerks, Give it
up now suckers.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


If you know it all answer me this. Why are tools like electric drills and
even shop vacuums listed as having 6.0 AMP etc. motors?

http://www.blackanddecker.com/ProductGuide/CategoryOverview.aspx?cPath=1496.2050


Because it makes better advertising copy than 0.48 horsepower??

daestrom

=> snicker
Probable, but it makes the statement that "power is never measured in
ampere units" quite wrong.

Your inability to detect adspeak from reality should embarrass you.

 

[JosephKK]

On Thu, 13 Aug 2009 17:27:05 +0300, Paul Keinanen <keinanen@sci.fi>
wrote:

On Thu, 13 Aug 2009 09:04:26 -0400, ingvald44 <noone@nowhere.com
wrote:

Paul Keinanen wrote:

Arc lamps in the 1880's were specified by the number of amperes
(typically 6 A for street lighting). All lamps were series connected
and you could operate 20-25 of these in series from a 6 A DC generator
producing a 1000-1500 V DC loaded voltage. Thus, the voltage drop
across each arc lamp was about 55 V on average.


That's interesting. How would you strike an arc on series wired arc
lamps? Seems near impossible...?

When powered down, the electrodes touch each other.

When power is applied to the chain, the nominal loop current will flow
through the electromagnet and electrodes. The magnets starts pulling
the electrodes apart and when the electrodes in one lamp are separated
from each other, the loop is broken and the full generator open
circuit voltage (apparently 1-2 kV) is across the electrodes.
Apparently the inductance in the electromagnets also help create large
voltages peaks across the electrode gap, when the loop current is
interrupted, further helping in striking the arc.

When the arc and electrodes reaches normal operational temperatures,
the voltage drop across the arc is reduced, thus more voltage is
available across the other lamps to start them. I have no idea how
long it takes, before a string of 20 arc lamps will achieve a stable
condition.

Paul

It has been a long time since i have read such crazy irresponsible
trash. I have worked a few projects that were a conversion from
series lighting (6.6 A, 4800 V) to 240 V systems. Worker safety was a
part of the issue. The odd thing is that at each lighting standard
there was a transformer, to make the normal voltage for the
lamp/ballast. The cost of the transformers seems to have added to
impetus of the conversion.

YMMV

 

[Don T]

"JosephKK" <quiettechblue@yahoo.com> wrote in message
news:qqej8519cjv20b8jfs2a20dvb87t8hcgt8@4ax.com...
On Mon, 10 Aug 2009 17:45:42 -0600, "Don T" <-painter-@louvre.org>
wrote:

"daestrom" <daestrom@twcny.rr.com> wrote in message
news:h5q7en12lar@news2.newsguy.com...
Don T wrote:
"Richardson" <member@newsguy.com> wrote in message
news:JYWdncZmtr_K2uPXnZ2dnUVZ_tOdnZ2d@posted.toastnet...

Again power is not measured in AMP, but in WATT you stupid jerks, Give
it
up now suckers.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


If you know it all answer me this. Why are tools like electric drills
and
even shop vacuums listed as having 6.0 AMP etc. motors?

http://www.blackanddecker.com/ProductGuide/CategoryOverview.aspx?cPath=1496.2050


Because it makes better advertising copy than 0.48 horsepower??

daestrom

=> snicker <=

Probable, but it makes the statement that "power is never measured in
ampere units" quite wrong.

Your inability to detect adspeak from reality should embarrass you.

```````````````````````````````````````````````````````````````````````````````````````````````

Your inability to read the snicker makes your opinion irrelevant.

--


Don Thompson

Stolen from Dan: "Just thinking, besides, I watched 2 dogs mating once,
and that makes me an expert. "

There is nothing more frightening than active ignorance.
~Goethe

It is a worthy thing to fight for one's freedom;
it is another sight finer to fight for another man's.
~Mark Twain

 

[Dave Platt]

In article <5Xiim.158324$vp.37400@newsfe12.iad>,
Tim Williams <tmoranwms@charter.net> wrote:

Wow, I didn't know they used PMPO that long ago. That's hardly out of the
tube age. I thought marketing was just discovering "watts RMS" back then!

Naah... in some ways, that was the "pyrite age" of PMPO ratings.
Fantastically-optimistic PMPO ratings were common, especially in
lower-end-of-the-market consumer stereos.

PMPO ratings became less common after the FCC enacted the regulations
which stated that home-audio amplifier power ratings were required to
be in RMS-continuous-into-8-ohms, with well-specified test and warmup
conditions.

PMPO (or equivalent) continued to be used for car-stereo amps, I
believe, and in more recent years a lot of computer-type "amplified
speaker" systems have used them.

--
Dave Platt <dplatt@radagast.org> AE6EO
Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior
I do _not_ wish to receive unsolicited commercial email, and I will
boycott any company which has the gall to send me such ads!

 

[JosephKK]

On Wed, 12 Aug 2009 17:51:59 -0500, AZ Nomad
<aznomad.3@PremoveOBthisOX.COM> wrote:

On Tue, 11 Aug 2009 14:47:02 -0700, Jim Thompson <To-Email-Use-The-Envelope-Icon@My-Web-Site.com> wrote:
On Tue, 11 Aug 2009 16:39:19 -0500, AZ Nomad
aznomad.3@PremoveOBthisOX.COM> wrote:

On Tue, 11 Aug 2009 21:10:19 GMT, Richard the Dreaded Libertarian <freedom_guy@example.net> wrote:
On Tue, 11 Aug 2009 14:36:23 -0500, AZ Nomad wrote:
On Mon, 10 Aug 2009 15:09:54 -0700, Jim Thompson <To-Email-Use-The-Envelope-Icon@My-Web-Site.com> wrote:
On Mon, 10 Aug 2009 15:16:24 -0500, AZ Nomad

On Mon, 10 Aug 2009 11:50:32 -0700, Jim Thompson <To-Email-Use-The-Envelope-Icon@My-Web-Site.com> wrote:
"When implemented, the Complete Lives system produces a priority curve
on which individuals aged between roughly 15 and 40 years get the most
substantial chance, whereas the youngest and oldest people get chances
that are attenuated... The Complete Lives system justifies preference
to younger people because of priority to the worst-off rather than
instrumental value."

http://www.sodahead.com/question/532683/rahms-brother-dr-ezekiel-emanuel-the-death-czar-obama-health-policy-advisor-announced-a-new-stystem-for-selecting-who-in-the-population-should-be-killeda-federal-system-for-withdrawing-care-from-those-chosen-for-death---do-you-care/

Obama's health program... Hitler Care

You're a loon.

Be nice. Otherwise, when you get ill, you'll be declared "surplus"

Please spread your RW lies somewhere else.

Lies? Just wait. You'll see the effects when the chickens come home to
roost.

Pointless scare mongering.
;


The only way socialism can present the illusion of "working" is at
gunpoint.

That hasn't been the experience of other western countries. Denying health care
while problems are cheap so that people end up in the emergency room costing
thousands of times more is a piss poor solution.

But the solution to that is NOT ALL that is in the bill. How can you
be so ignorant? I'll bet that you HAVE NOT READ the bill. I have.
it's downright scary :-(

Don't talk to me about ignorant. You're the fool spreading lies
dreamed up by Palin's press crew.

Poxy hell. Read the damned thing (HR 3200) what insane horror!!
Terror in the first 50 pages. Or maybe you hate productive people so
much.

 

[Jim Thompson]

On Mon, 17 Aug 2009 16:02:56 -0700,
"JosephKK"<quiettechblue@yahoo.com> wrote:

On Wed, 12 Aug 2009 17:51:59 -0500, AZ Nomad
aznomad.3@PremoveOBthisOX.COM> wrote:

On Tue, 11 Aug 2009 14:47:02 -0700, Jim Thompson <To-Email-Use-The-Envelope-Icon@My-Web-Site.com> wrote:
On Tue, 11 Aug 2009 16:39:19 -0500, AZ Nomad
aznomad.3@PremoveOBthisOX.COM> wrote:

On Tue, 11 Aug 2009 21:10:19 GMT, Richard the Dreaded Libertarian <freedom_guy@example.net> wrote:
On Tue, 11 Aug 2009 14:36:23 -0500, AZ Nomad wrote:
On Mon, 10 Aug 2009 15:09:54 -0700, Jim Thompson <To-Email-Use-The-Envelope-Icon@My-Web-Site.com> wrote:
On Mon, 10 Aug 2009 15:16:24 -0500, AZ Nomad

On Mon, 10 Aug 2009 11:50:32 -0700, Jim Thompson <To-Email-Use-The-Envelope-Icon@My-Web-Site.com> wrote:
"When implemented, the Complete Lives system produces a priority curve
on which individuals aged between roughly 15 and 40 years get the most
substantial chance, whereas the youngest and oldest people get chances
that are attenuated... The Complete Lives system justifies preference
to younger people because of priority to the worst-off rather than
instrumental value."

http://www.sodahead.com/question/532683/rahms-brother-dr-ezekiel-emanuel-the-death-czar-obama-health-policy-advisor-announced-a-new-stystem-for-selecting-who-in-the-population-should-be-killeda-federal-system-for-withdrawing-care-from-those-chosen-for-death---do-you-care/

Obama's health program... Hitler Care

You're a loon.

Be nice. Otherwise, when you get ill, you'll be declared "surplus"

Please spread your RW lies somewhere else.

Lies? Just wait. You'll see the effects when the chickens come home to
roost.

Pointless scare mongering.
;


The only way socialism can present the illusion of "working" is at
gunpoint.

That hasn't been the experience of other western countries. Denying health care
while problems are cheap so that people end up in the emergency room costing
thousands of times more is a piss poor solution.

But the solution to that is NOT ALL that is in the bill. How can you
be so ignorant? I'll bet that you HAVE NOT READ the bill. I have.
it's downright scary :-(

Don't talk to me about ignorant. You're the fool spreading lies
dreamed up by Palin's press crew.

Poxy hell. Read the damned thing (HR 3200) what insane horror!!
Terror in the first 50 pages. Or maybe you hate productive people so
much.

AZ Nomad is just another ignorant bastard on the order of NymNoNuts.
I've locked him out. Don't feed the troll ;-)

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |

Postings via gmail, yahoo, hotmail, aioe, uar or googlegroups, and
trolls/feeders, are now automatically kill-filed using Agent v5.0

To be white-listed, send request via the E-mail icon on my website

 

[Mycelium]

On Mon, 17 Aug 2009 19:08:09 GMT, Rich Grise <richgrise@example.net>
wrote:

On Fri, 14 Aug 2009 18:21:17 -0700, Mycelium wrote:
On Fri, 14 Aug 2009 19:17:41 GMT, Rich Grise <richgrise@example.net
wrote:

And, like the series Xmas lights of yore, when one goes out, they all
go out.

Not if it fails shorted.

NO! You said "and like the Xmas lights..." which means that you were
talking about arc lamps in series. THAT is what my comment is about.

No, I said, "like the Xmas lights of yore," i.e., about fifty years ago.
(which I also wrote quite clearly.)

Ergo, I took you at your word from your response to it.

So go take your nap, and quit being so bitchy.

Thanks,
Rich

The discussion went on about arc lamps in series. THEN, YOU made the
above remark, as in:

"Just like the ARC LAMPS..."

When you said "like the xmas lights of yore."

SO, MY response was CLEARLY about ARC LAMPS.

ANY DITZ that came along and read it the wrong way has a fucking
problem.

It has nothing to do with sleep OR bitchyness ... on MY end.

 

[TralfamadoranJetPilot]

On Mon, 17 Aug 2009 19:29:52 GMT, Richard the Dreaded Libertarian
<freedom_guy@example.net> wrote:

On Mon, 17 Aug 2009 04:36:02 -0700, TralfamadoranJetPilot wrote:

We also need to take a stronger stance on North Korea and Iran's
attempts to become armed with nuclear devices or the technology to make
them.

Just lobby for more ABL's:
http://www.boeing.com/defense-space/military/abl/index.html

We've only got the one prototype, and it's due for a field test, but
against nuclear terrorism, one can't be too careful, can one?

Cheers!
Rich

I am pretty goddamned sure that the treaty they signed in the 50s
precluded them from creating and testing ANY form of short OR long range
missile, much less a nuclear (nuke-u-lar) device program.

What we should have done is make a stance at the UN, while
simultaneously bombing the piss out of ANY launch sites found,
particularly ANY that are active.

Then, we should have made it 100% clear that it would not be tolerated
again either.

Then, we ASK Iran ONE MORE TIME, to kill their breeder reactor program,
or we will do it for them.

It's time for brass tacks, boys!

If we keep sitting on our hands, that is what the anthropologists of
the future will find. Just like in Pompeii. They will find idiots
sitting on their hands, fried to a crisp.

Put me in office. Put me in front of a button.

I am not into this "wait until they smite us" CRAP!

 

[Archimedes' Lever]

On Mon, 17 Aug 2009 13:21:24 -0700, "JosephKK"<quiettechblue@yahoo.com>
wrote:

On Mon, 10 Aug 2009 17:45:42 -0600, "Don T" <-painter-@louvre.org
wrote:

"daestrom" <daestrom@twcny.rr.com> wrote in message
news:h5q7en12lar@news2.newsguy.com...
Don T wrote:
"Richardson" <member@newsguy.com> wrote in message
news:JYWdncZmtr_K2uPXnZ2dnUVZ_tOdnZ2d@posted.toastnet...

Again power is not measured in AMP, but in WATT you stupid jerks, Give it
up now suckers.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


If you know it all answer me this. Why are tools like electric drills and
even shop vacuums listed as having 6.0 AMP etc. motors?

http://www.blackanddecker.com/ProductGuide/CategoryOverview.aspx?cPath=1496.2050


Because it makes better advertising copy than 0.48 horsepower??

daestrom

=> snicker <=

Probable, but it makes the statement that "power is never measured in
ampere units" quite wrong.

Your inability to detect adspeak from reality should embarrass you.

Folks as dumb as him have embarrassments that fly right over their
head, while they look at you like a learning disabled kid would.

 

[Archimedes' Lever]

On Mon, 17 Aug 2009 14:23:33 -0700, "JosephKK"<quiettechblue@yahoo.com>
wrote:

It has been a long time since i have read such crazy irresponsible
trash. I have worked a few projects that were a conversion from
series lighting (6.6 A, 4800 V) to 240 V systems. Worker safety was a
part of the issue. The odd thing is that at each lighting standard
there was a transformer, to make the normal voltage for the
lamp/ballast. The cost of the transformers seems to have added to
impetus of the conversion.

YMMV

The discussion was about ARC LAMPS. There are no fucking ballasts.

Try reading the thread next time.

 

[John Larkin]

On Mon, 17 Aug 2009 14:23:33 -0700,
"JosephKK"<quiettechblue@yahoo.com> wrote:

On Thu, 13 Aug 2009 17:27:05 +0300, Paul Keinanen <keinanen@sci.fi
wrote:

On Thu, 13 Aug 2009 09:04:26 -0400, ingvald44 <noone@nowhere.com
wrote:

Paul Keinanen wrote:

Arc lamps in the 1880's were specified by the number of amperes
(typically 6 A for street lighting). All lamps were series connected
and you could operate 20-25 of these in series from a 6 A DC generator
producing a 1000-1500 V DC loaded voltage. Thus, the voltage drop
across each arc lamp was about 55 V on average.


That's interesting. How would you strike an arc on series wired arc
lamps? Seems near impossible...?

When powered down, the electrodes touch each other.

When power is applied to the chain, the nominal loop current will flow
through the electromagnet and electrodes. The magnets starts pulling
the electrodes apart and when the electrodes in one lamp are separated
from each other, the loop is broken and the full generator open
circuit voltage (apparently 1-2 kV) is across the electrodes.
Apparently the inductance in the electromagnets also help create large
voltages peaks across the electrode gap, when the loop current is
interrupted, further helping in striking the arc.

When the arc and electrodes reaches normal operational temperatures,
the voltage drop across the arc is reduced, thus more voltage is
available across the other lamps to start them. I have no idea how
long it takes, before a string of 20 arc lamps will achieve a stable
condition.

Paul

It has been a long time since i have read such crazy irresponsible
trash.

Are you saying that the above is untrue?

I have worked a few projects that were a conversion from

series lighting (6.6 A, 4800 V) to 240 V systems. Worker safety was a
part of the issue. The odd thing is that at each lighting standard
there was a transformer, to make the normal voltage for the
lamp/ballast. The cost of the transformers seems to have added to
impetus of the conversion.

You don't know the functions of the transformer?

Incidentally, DC arc lamps didn't use transformers.

John