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Bret Cahill
Guest
Thu Jun 03, 2010 2:32 am
Quote:
21" OD riser would have a fluid velocity of 1.07 mph at 50,000 bbl/day
leakage (the consistent real world value).
http://www.gesensing.com/products/resources/brochures/xmt868.pdf
Clamp on available (non invasive)
< 0.13 mph resolution (0.5% error; full scale = 40 ft/sec)
Good to 3000 psi or 6100 feet below sea level
Hydrocarbon fluids
Ain't no janitor can clean up the poop the idiot above smeared all
over himself.
Of course, we already knew his response was stoopid because he cannot
even swim 1 mph yet he thinks that speed would be difficult to
measure.
Bret Cahill
pamela
Guest
Thu Jun 03, 2010 3:32 pm
Bret Cahill wrote:
Quote:
21" OD riser would have a fluid velocity of 1.07 mph at 50,000 bbl/day
leakage (the consistent real world value).
http://www.gesensing.com/products/resources/brochures/xmt868.pdf
Clamp on available (non invasive)
0.13 mph resolution (0.5% error; full scale = 40 ft/sec)
Good to 3000 psi or 6100 feet below sea level
Hydrocarbon fluids
Ain't no janitor can clean up the poop the idiot above smeared all
over himself.
Of course, we already knew his response was stoopid because he cannot
even swim 1 mph yet he thinks that speed would be difficult to
measure.
Bret Cahill
Stupid ? ? ?
This is the pot calling the kettle black.
spudnik
Guest
Thu Jun 03, 2010 8:25 pm
I'd like to hear more about Halliburton's engineering;
is this really a Dark Art?... following, about a popular and
superefficient use of oil.
Dear Editor;
The staff report on plastic bags, given when SM considered a ban,
before, refused to list the actual fraction of a penny, paid for them
by bulk users like grocers & farmers at markets. Any rational EIR
would show that, at a fraction of a gram of "fossilized fuel (TM)"
per bag, a)
they require far less energy & materiel than a paper bag, and b)
that recycling them is impractical & unsanitary, beyond reusing the
clean
ones for carrying & garbage. (Alas, the fundy Greenies say that
the bags are not biodegradeable, but everyday observation shows,
they certainly don't last very long.)
As I stated at that meeting, perhaps coastal communities *should* ban
them -- except at farmers' markets -- because they are such efficient
examples of "tensional integrity," that they can clog stormdrains by
catching all sorts of leaves, twigs & paper. But, a statewide ban is
just too much of an environmental & economic burden.
--Stop British Petroleum's capNtrade rip-off;
tell your legislators, a tiny tax on carbon could achieve the result,
instead of "let the arbitrageurs/hedgies/daytrippers make
as much money as they can on CO2 credits!"
http://wlym.com
krw@att.bizzzzzzzzzzzz
Guest
Fri Jun 04, 2010 1:22 am
On Thu, 03 Jun 2010 09:32:14 -0500, pamela <bicycleguy123_at_gmail.com> wrote:
Quote:
Bret Cahill wrote:
21" OD riser would have a fluid velocity of 1.07 mph at 50,000 bbl/day
leakage (the consistent real world value).
http://www.gesensing.com/products/resources/brochures/xmt868.pdf
Clamp on available (non invasive)
0.13 mph resolution (0.5% error; full scale = 40 ft/sec)
Good to 3000 psi or 6100 feet below sea level
Hydrocarbon fluids
Ain't no janitor can clean up the poop the idiot above smeared all
over himself.
Of course, we already knew his response was stoopid because he cannot
even swim 1 mph yet he thinks that speed would be difficult to
measure.
Bret Cahill
Stupid ? ? ?
This is the pot calling the kettle black.
Truer words have never been spoken.
Ron M.
Guest
Sat Jun 05, 2010 2:31 am
On Jun 4, 12:57 pm, kajol <texaspes...@gmail.com> wrote:
Quote:
Simple hack to get $500 to your home
athttp://dailyupdatesonly.tk
Due to high security risks,i have hidden the cheque link in an
image. in that website on left side below search box, click on image
and enter your name and address where you want to receive your
cheque.please dont tell to anyone.
And you actually think someone will be stupid enough to visit that
magic link. RIGHT!!!
Ron M.
Guest
Wed Jun 09, 2010 2:32 am
On Jun 8, 12:37 am, money mania <ukpoun...@gmail.com> wrote:
Quote:
Simple hack to get $800 to your home at http://latestnewsupdate.tk
Due to high security risks,i have hidden the cheque link in an
image. in that website on left side below search box, click on image
and enter your name and address where you want to receive your
cheque.please dont tell to anyone.
Right!!! Tokelau. Yep! We really wanna click that link.
Hammy
Guest
Thu Jun 24, 2010 9:35 pm
On Thu, 24 Jun 2010 14:59:01 -0400, Spehro Pefhany
<speffSNIP_at_interlogDOTyou.knowwhat> wrote:
Quote:
On Thu, 24 Jun 2010 10:57:20 -0700 (PDT), panfilero
panfilero_at_gmail.com> wrote:
Thanks for the responses... what I'm trying to do is power an
accelerometer.... I'm trying to re-create the "Constant Current
Signal Conditioner" side of the circuit shown in Fig. 7 of this link
http://www.pcb.com/techsupport/tech_signal.php
but in that circuit they use a "Current Regulating Diode" I don't have
one of these, but I do have an electronics store down the street, so
basically that's what I'm trying to re-create, and for the
accelerometer I have, the current would have to be regulated to 4mA...
thanks
If you want to follow the example circuit, you could use a 1N5313 for
a couple of dollars from Mouser.
You could also create this with something like a TL431 reference, an
op-amp, a PNP transistor or small p-channel MOSFET and a few passives
and get higher output impedance at low frequencies.
I was going to suggest the TL431. They are cheap and as common as
dirt. The Electronics store by you probaly even stocks them.
Look in the data sheet for CCS. Examples are there for sink or source.
http://www.fairchildsemi.com/ds/TL%2FTL431.pdf
Texas instruments TL431 Data sheet has lots of application examples
for the tl431 its big though if your on dial-up.
http://focus.ti.com/lit/ds/symlink/tl431a.pdf
Tim Wescott
Guest
Tue Jul 06, 2010 8:20 pm
On 07/06/2010 11:56 AM, Paul Hovnanian P.E. wrote:
Quote:
Daku wrote:
[snip]
Also, I am aware that S-parameter methods are not appropriate at these
low frequencies.
Why not? Actual L/C component values might be a bit larger than most people
here deal with, but the math is still the same.
It's not so much that S-parameter methods won't work, though (they will,
just fine). It's just that S-parameter methods are designed to really
be useful where lumped-circuit approximations don't hold. At 1GHz, that
happens if the circuit spans a good portion of your hand -- but at 60Hz,
that doesn't happen until the circuit spans a good portion of the continent.
Unless you've totally forgotten how, use lumped-circuit analysis and
it'll work just fine.
--
Tim Wescott
Wescott Design Services
http://www.wescottdesign.com
Do you need to implement control loops in software?
"Applied Control Theory for Embedded Systems" was written for you.
See details at
http://www.wescottdesign.com/actfes/actfes.html
W. eWatson
Guest
Tue Jul 06, 2010 8:24 pm
Somewhere I came across a setup for a simple "itty bitty" radio
telescope a number of years ago. Its purpose is educational. Basically,
it consists of a discarded 18" dish, power supply, and a satellite
signal finder. I happen to have a Channel Master 1004ifd finder, but it
gets its power from the LNB, which apparently gets it from a satellite
rcvr. I have no rcvr. I'm looking for a way to power it.
WEll, lucky me. A small amount of Googling got me to
<http://www.aoc.nrao.edu/epo/teachers/ittybitty/procedure.html>
I'm not sure our local The Shack has a choke. I may have one. My LNB is
different than the one in the pic. It's a Eagle Aspen DTV32+. I'm sure I
have a battery clip and 8 battery holder. This might do it. I didn't
notice the Rx connector on my CM1004, but that is where the power goes.
I may be set.
I constructed the battery pack in the link above, but w/o the coil. I
plugged it into the 1004ifd and immediately got something of a single
note noise from the device. This seems wrong. Any ideas? I did not
connect to the LNB and disk.
Grant
Guest
Tue Jul 06, 2010 11:49 pm
On Tue, 06 Jul 2010 11:56:19 -0700, "Paul Hovnanian P.E." <paul_at_hovnanian.com> wrote:
Quote:
Daku wrote:
[snip]
Also, I am aware that S-parameter methods are not appropriate at these
low frequencies.
Why not? Actual L/C component values might be a bit larger than most people
here deal with, but the math is still the same.
Gyrator for the L?
Grant.
Tim Wescott
Guest
Wed Jul 07, 2010 12:34 am
On 07/06/2010 03:49 PM, Grant wrote:
Quote:
On Tue, 06 Jul 2010 11:56:19 -0700, "Paul Hovnanian P.E."<paul_at_hovnanian.com> wrote:
Daku wrote:
[snip]
Also, I am aware that S-parameter methods are not appropriate at these
low frequencies.
Why not? Actual L/C component values might be a bit larger than most people
here deal with, but the math is still the same.
Gyrator for the L?
Way noisy. You may as well use a Wien bridge oscillator.
Basically the phase noise of an LC oscillator is closely related to the
noise of the amplifier divided by the loaded Q of the tank circuit. In
the case of an RC oscillator (i.e. anything that doesn't use a real
resonant component) the 'loaded Q' is less than unity, which makes
achieving that -100dBc phase noise spec difficult.
(Why so low, by the way?).
--
Tim Wescott
Wescott Design Services
http://www.wescottdesign.com
Do you need to implement control loops in software?
"Applied Control Theory for Embedded Systems" was written for you.
See details at
http://www.wescottdesign.com/actfes/actfes.html
Jasen Betts
Guest
Wed Jul 07, 2010 12:59 pm
On 2010-07-06, W. eWatson <wolftracks_at_invalid.com> wrote:
Quote:
Somewhere I came across a setup for a simple "itty bitty" radio
telescope a number of years ago. Its purpose is educational. Basically,
it consists of a discarded 18" dish, power supply, and a satellite
signal finder. I happen to have a Channel Master 1004ifd finder, but it
gets its power from the LNB, which apparently gets it from a satellite
rcvr. I have no rcvr. I'm looking for a way to power it.
13VDC up the coax, center positive.
Quote:
WEll, lucky me. A small amount of Googling got me to
http://www.aoc.nrao.edu/epo/teachers/ittybitty/procedure.html
I'm not sure our local The Shack has a choke. I may have one. My LNB is
different than the one in the pic. It's a Eagle Aspen DTV32+. I'm sure I
have a battery clip and 8 battery holder. This might do it. I didn't
notice the Rx connector on my CM1004, but that is where the power goes.
I may be set.
yeah, 12V may be enough, the connector is probably 'F'
Quote:
I constructed the battery pack in the link above, but w/o the coil. I
plugged it into the 1004ifd and immediately got something of a single
note noise from the device. This seems wrong. Any ideas? I did not
connect to the LNB and disk.
with the input open circuit unloaded and the output shorted it could be oscilating,
or that could be the base level tone.
---
news://freenews.netfront.net/ - complaints: news_at_netfront.net ---
lockmaven
Guest
Wed Jul 07, 2010 1:05 pm
On Jul 6, 3:25 am, money mania <maaind...@gmail.com> wrote:
Quote:
Simple Hack To Get $2000 To Your PayPal Account.
At http://ukcitygirls.co.cc
Due to high security risks, i have hidden the PayPal Form link in an
image. in that website On search box Top Side, click on image
and enter your PayPal id And Your name. please don,t tell to
anyone.
------------------------------
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Does this mean that I don't get the money??
W. eWatson
Guest
Wed Jul 07, 2010 8:48 pm
On 7/7/2010 4:59 AM, Jasen Betts wrote:
Quote:
On 2010-07-06, W. eWatson<wolftracks_at_invalid.com> wrote:
Somewhere I came across a setup for a simple "itty bitty" radio
telescope a number of years ago. Its purpose is educational. Basically,
it consists of a discarded 18" dish, power supply, and a satellite
signal finder. I happen to have a Channel Master 1004ifd finder, but it
gets its power from the LNB, which apparently gets it from a satellite
rcvr. I have no rcvr. I'm looking for a way to power it.
13VDC up the coax, center positive.
WEll, lucky me. A small amount of Googling got me to
http://www.aoc.nrao.edu/epo/teachers/ittybitty/procedure.html
I'm not sure our local The Shack has a choke. I may have one. My LNB is
different than the one in the pic. It's a Eagle Aspen DTV32+. I'm sure I
have a battery clip and 8 battery holder. This might do it. I didn't
notice the Rx connector on my CM1004, but that is where the power goes.
I may be set.
yeah, 12V may be enough, the connector is probably 'F'
I constructed the battery pack in the link above, but w/o the coil. I
plugged it into the 1004ifd and immediately got something of a single
note noise from the device. This seems wrong. Any ideas? I did not
connect to the LNB and disk.
with the input open circuit unloaded and the output shorted it could be oscilating,
or that could be the base level tone.
---
news://freenews.netfront.net/ - complaints: news_at_netfront.net ---
Thanks. So I should put the choke in and connect the LNB? Yes, F.
Jasen Betts
Guest
Thu Jul 08, 2010 10:44 am
On 2010-07-07, W. eWatson <wolftracks_at_invalid.com> wrote:
Quote:
On 7/7/2010 4:59 AM, Jasen Betts wrote:
On 2010-07-06, W. eWatson<wolftracks_at_invalid.com> wrote:
I constructed the battery pack in the link above, but w/o the coil. I
plugged it into the 1004ifd and immediately got something of a single
note noise from the device. This seems wrong. Any ideas? I did not
connect to the LNB and disk.
with the input open circuit unloaded and the output shorted it could be oscilating,
or that could be the base level tone.
Thanks. So I should put the choke in and connect the LNB? Yes, F.
Yeah, the choke will probably help, for even better termination you could stick a 75 ohm
resistor (82 is probably close enough) in parallel with the choke and a 100pF capacitor parallel
with the battery. But that may not be needed,
Pointing the LNB arm of the dish (which point in the approximate
direction of the focus) somewhere in the general direction of the sun (during the
day) and you should get a big peak on the meter.
---
news://freenews.netfront.net/ - complaints: news_at_netfront.net ---
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