Driver to drive?

[Richard the Dreaded Liber]

On Sun, 03 May 2009 04:11:22 +0100, Eeyore wrote:

Some REAL science at last, notably illustrating that the effect of CO2
in the atmosphere is nearly already at saturation level and more can
contribute very little to temperature rise.

Anthropogenic Global Warming was debunked in the 1970's. That's why they

changed the name to "Climate Change".

Hope This Helps!
Rich

 

[Rich Grise]

On Mon, 04 May 2009 00:41:58 +0000, Don Klipstein wrote:

"Eeyore" <rabbitsfriendsandrelations@hotmail.com> wrote in message

Some REAL science at last, notably illustrating that the effect of CO2
in the atmosphere is nearly already at saturation level and more can
contribute very little to temperature rise.

http://brneurosci.org/co2.html

Which claims that water vapor accounts for 90-95% of the "Greenhouse
Effect", and that CO2 accounts for 4.2-8.4% of it.

The Wiki article on "Greenhouse Effect" says 9-26% for CO2 and 36-70%

The very concept of "greenhouse gases" is ludicrous in the first place.

Not only is it based on Venus, which has so much CO2 with H2SO4 clouds
that its atmospheris pressure at ground level is approx. 90 atmospheres,
or 1350 PSI, but it very studiously evades the fact that a living, dynamic
atmosphere is NOT a huge pane of glass.

Hope This Helps!
Rich

 

[keithw86@gmail.com]

On May 4, 11:42 am, alertj...@rediffmail.com wrote:

On May 4, 8:58 am, "keith...@gmail.com" <keith...@gmail.com> wrote:

On May 4, 12:46 am, alertj...@rediffmail.com wrote:

Based on trends in mask and design costs for standard cells, vs. FGPA
capabilities, do
you believe the number of new designs per year executed in standard
cells will increase
or decrease in the future as compared with a baseline of 2007 ?

I think it will increase, what do you think ?

I think you're nuts, but you can ignore history at your peril.

Dave..You are smart..It was an exam question. But I am not convinced
by the answer professor gave me...that FPGAs will takeover standard
cell designs thereby reducing the number of standard cell designs. I
think as the performance and power of FPGAs will be bad compared to SC
designs, SC designs are always going to be winners
and I dont think FPGAs will take over.

You didn't answer Dave.

FPGAs won't "take over" standard cell designs any more than digital
esigns will "take over" analog designs or microcontrollers will "take
over" logic designs. Each has its purpose and the lines will shift.

Standard cells will certainly continue to lose designs to FPGAs as
costs rise. There will continue to be a niche for standard cell, as
well as custom logic, for those applications that can afford the costs
(where "afford" == require).

 

[Richard the Dreaded Liber]

On Sun, 03 May 2009 08:34:28 -0700, Bob Eld wrote:

In the mean time the Arctic, Greenland and the Antarctic keep melting and
ice breaking up. Explain that. Me thinks you are "out to lunch."

OK, so the climate is changing. The climate has been changing for billions
of years. I don't think anyone denies that.

But the idea that it's "all our fault" would be laughable if it weren't so
tragic that such massive hordes of people have fallen for the scam hook,
line, and sinker.

Al Gore is like those TV evangelists: "Send me all your money, and I
will SAVE you!"

The reason there's so little real science published is because you don't
get billion-dollar research grants by saying "There's no problem."

Hope This Helps!
Rich

 

[Richard Henry]

On May 4, 9:42 am, alertj...@rediffmail.com wrote:

On May 4, 8:58 am, "keith...@gmail.com" <keith...@gmail.com> wrote:

On May 4, 12:46 am, alertj...@rediffmail.com wrote:

Based on trends in mask and design costs for standard cells, vs. FGPA
capabilities, do
you believe the number of new designs per year executed in standard
cells will increase
or decrease in the future as compared with a baseline of 2007 ?

I think it will increase, what do you think ?

I think you're nuts, but you can ignore history at your peril.

Dave..You are smart..It was an exam question. But I am not convinced
by the answer professor gave me...that FPGAs will takeover standard
cell designs thereby reducing the number of standard cell designs. I
think as the performance and power of FPGAs will be bad compared to SC
designs, SC designs are always going to be winners
and I dont think FPGAs will take over.

Your professor, wsa right, but he had the wrong reason.

In electronics design, there are critical 2 speed measurements.
1. How fast will your circuit operate?
2. When will you be finished with the design?

FPGA circuits are easier to design, require less training, and (at
least in my experience) require less expensive tools. Your typical MB-
bearing middle manager realizes that he is more likely to get a bonus
for finishing his project ahead of schedule and within budget than for
producing a high-quality product. Thus the enthusiasm for FPGAs.

 

[Rich Grise]

On Sat, 02 May 2009 17:15:50 -0700, Mark-T wrote:

DId anyone here see the problem presented in
the Science section of NY Times last week?

No. Got a link?

Thanks,
Rich

 

[Rich Grise]

On Mon, 04 May 2009 08:43:46 -0700, Tim Williams wrote:

On May 4, 9:56 am, Anon <a...@domain.invalid> wrote:
Some very basic calculus is helpful.  A solution is given at
http://www.mathrec.org/old/2003jul/solutions.html

Riddle:

There is a rabbit in the middle of a perfectly circular pond. An
agent is trying to get the rabbit. The rabbit swims exactly away from
the agent. After a few seconds, the agent's head explodes. Why?

Is the "agent" wading/swimming, or just walking around the perimeter
of the pond? What's each of their respective speeds? How did the rabbit
get to the middle of the pond in the first place? Was somebody using him
for Muxkie bait? ;-)

Thanks,
Rich

 

[Rich the Cynic]

On Sun, 03 May 2009 02:11:11 -0400, M Rath wrote:

DId anyone here see the problem presented in
the Science section of NY Times last week?
Quite startling, to see something so sophisticated
in a 'general readership' publication.
Is it solvable without a calculus of variations approach?

The rabbit is in the middle of a circular pond. The agent is on the edge of
the pond. The agent can run 4-times as fast as the rabbit can swim. Can the
rabbit get away ?

It doesn't have to. All it needs to do is float there until the agent dies
of exhaustion from running around and around the pond forever. >:->

Hope This Helps!
Rich

 

[Rich the Cynic]

On Sat, 02 May 2009 18:27:59 -0400, RFI-EMI-GUY wrote:

In my house attic, I have several 4 inch white PVC vent stacks which are
simply white PVC drain pipe extending from the wall headers through the
attic and the roof. On the roof, these are covered with lead flashing to
prevent water from getting inside the house. I have been doing a lot of
work in the attic, and have noticed that these pipes "glow" quite
noticeably as a result of the sunlight outside. As this often happens
when the sun is at the horizon and thus at an angle below which direct
coupling into the pipe would be possible, I am very curious as to the
reason that the visible infrared portion is so much more visible than
white light spectrum. Has anyone else noticed this? What is going on?

Duh. They're light pipes.

I'd put something over the top of them to keep birds from putting their
nests there and plugging them.

Good Luck!
Rich

 

[Rich Grise]

On Mon, 04 May 2009 18:21:31 +0000, Charlie E. wrote:

On Sun, 03 May 2009 10:51:21 -0700, Joerg
RFI-EMI-GUY wrote:

In my house attic, I have several 4 inch white PVC vent stacks which are
simply white PVC drain pipe extending from the wall headers through the
attic and the roof. On the roof, these are covered with lead flashing to
prevent water from getting inside the house. I have been doing a lot of
work in the attic, and have noticed that these pipes "glow" quite
noticeably as a result of the sunlight outside. As this often happens
when the sun is at the horizon and thus at an angle below which direct
coupling into the pipe would be possible, I am very curious as to the
reason that the visible infrared portion is so much more visible than
white light spectrum. Has anyone else noticed this? What is going on?


White PVC sticking out the roof? 4"? Wow. White PVC usually becomes
rotten from UV pretty quickly. If it isn't painted it begins to turn
brown within 2-3 years in our area. After some more years you can
sometimes crumble it by hand.

Around here, it takes considerably less time than that. The pipes I
ran to my pools solar heater were quite dark within a year, even the
ones by the pumphouse that are mostly in the shade!

Would it make any difference if they were black ABS? It would obviously

dramatically minimize the "glow", but how's black ABS's UV susceptibillity
vs. white PVC?

Thanks,
Rich

 

[Rich Grise]

On Mon, 04 May 2009 10:25:42 +0000, Jasen Betts wrote:

On 2009-05-03, Joerg <notthisjoergsch@removethispacbell.net> wrote:
RFI-EMI-GUY wrote:

In my house attic, I have several 4 inch white PVC vent stacks which are
simply white PVC drain pipe extending from the wall headers through the
attic and the roof. On the roof, these are covered with lead flashing to
prevent water from getting inside the house. I have been doing a lot of
work in the attic, and have noticed that these pipes "glow" quite
noticeably as a result of the sunlight outside. As this often happens
when the sun is at the horizon and thus at an angle below which direct
coupling into the pipe would be possible, I am very curious as to the
reason that the visible infrared portion is so much more visible than
white light spectrum. Has anyone else noticed this? What is going on?


White PVC sticking out the roof? 4"? Wow. White PVC usually becomes
rotten from UV pretty quickly. If it isn't painted it begins to turn
brown within 2-3 years in our area. After some more years you can
sometimes crumble it by hand.

if it's loaded with TiO it'll last several decades exposed.

Wouldn't that be TiO2?

Thanks,
Rich

 

[Rich Grise]

On Mon, 04 May 2009 09:41:17 -0700, Joerg wrote:

Jasen Betts wrote:
On 2009-05-03, Joerg <notthisjoergsch@removethispacbell.net> wrote:
RFI-EMI-GUY wrote:
In my house attic, I have several 4 inch white PVC vent stacks which are
simply white PVC drain pipe extending from the wall headers through the
attic and the roof. On the roof, these are covered with lead flashing to
prevent water from getting inside the house. I have been doing a lot of
work in the attic, and have noticed that these pipes "glow" quite
noticeably as a result of the sunlight outside. As this often happens
when the sun is at the horizon and thus at an angle below which direct
coupling into the pipe would be possible, I am very curious as to the
reason that the visible infrared portion is so much more visible than
white light spectrum. Has anyone else noticed this? What is going on?

White PVC sticking out the roof? 4"? Wow. White PVC usually becomes
rotten from UV pretty quickly. If it isn't painted it begins to turn
brown within 2-3 years in our area. After some more years you can
sometimes crumble it by hand.

if it's loaded with TiO it'll last several decades exposed.


Contractors typically use the cheapest stuff they can get. Made in China.

So, how is Chinese PVC different from "domestic" PVC (if there is any such
thing any more)? I'd have assumed that PVC is PVC.

Thanks,
Rich

 

[Rich Grise]

On Sun, 03 May 2009 14:37:21 -0400, RFI-EMI-GUY wrote:

Joerg wrote:
RFI-EMI-GUY wrote:

In my house attic, I have several 4 inch white PVC vent stacks which
are simply white PVC drain pipe extending from the wall headers
through the attic and the roof. On the roof, these are covered with
lead flashing to prevent water from getting inside the house. I have
been doing a lot of work in the attic, and have noticed that these
pipes "glow" quite noticeably as a result of the sunlight outside. As
this often happens when the sun is at the horizon and thus at an angle
below which direct coupling into the pipe would be possible, I am very
curious as to the reason that the visible infrared portion is so much
more visible than white light spectrum. Has anyone else noticed this?
What is going on?

White PVC sticking out the roof? 4"? Wow. White PVC usually becomes
rotten from UV pretty quickly. If it isn't painted it begins to turn
brown within 2-3 years in our area. After some more years you can
sometimes crumble it by hand.

Read the above again, the part sticking through the roof is covered in
lead flashing as is standard practice.

Is there anything over the top of the hole, like a shroud? If not, then
it's pretty obvious, like those SS skylights.

Thanks,
Rich

 

[John Larkin]

On Mon, 04 May 2009 18:29:46 GMT, Rich Grise <richgrise@example.net>
wrote:

On Sun, 03 May 2009 17:58:21 -0700, John Larkin wrote:
On Sun, 3 May 2009 17:32:18 -0700 (PDT), Greegor <Greegor47@gmail.com
On May 3, 7:23 pm, John Larkin
jjlar...@highNOTlandTHIStechnologyPART.com> wrote:
These crappy RatShack terminal posts are actually conductive!

http://www.radioshack.com/product/index.jsp?productId=2103639

A pair of them leak 12 pA to the chassis at +1 volt. If I ground
myself and hold the plastic screw part of one, it goes up to 20.

So I'll have to replace them with some Pomonas or something. What a
nuisance.

Pity; they do look nice.

John

0.000000012 Amp? LOL

I just finished machining a couple of big slots in the aluminum box,
where the critical binding posts go, and added a polycarb plate that
the terminal strips mount on. Now the leakage is showing about 100 fA,
basically my measurement limit. It was ugly, machining the
already-"finished" electronics. I tried milling it dry, but that
didn't work, so I wound up getting chips and cutting fluid everywhere.
Had to clean all that up.

It's amazing what a few drops of Tapmatic will do.

Here's the box:

ftp://jjlarkin.lmi.net/99A260A1.JPG

ftp://jjlarkin.lmi.net/99A260A3.JPG

ftp://jjlarkin.lmi.net/99S260A.JPG

Seems to work now.

Geez, John, did you just fall off the turnip truck yesterday? I've been
doing this sort of thing for decades. For steel, practically any ol'
ordinay petroleum-based oil will work, and for aluminum lard, which in
Mexicanese is "manteca". It works like a charm, albeit, as you've noticed,
it makes mell of a hess, but you do get real purty results.[1] ;-)

Cheers!
Rich
[1] yes, I know it should be "really pretty", but I thought the way
I wrote it here would be somehow more poetic, or amusing, or whatever. ;-)

What's wrong with Tapmatic Aluminum cutting fluid? A tiny bit is all
it takes to cut cleanly. A tiny bit is also what it takes to gunk up
my beautiful finished electronics.

We don't stock lard in the machine ship. It attracts ants.

John

 

[Rich Grise]

On Sun, 03 May 2009 14:38:11 -0400, RFI-EMI-GUY wrote:

RFI-EMI-GUY wrote:
....
am very curious as to the reason that the visible infrared portion
is so much more visible than white light spectrum. Has anyone else

AS usual the topic veers far away from the question asked :{

That's because the question is so stupid.

What the hell is "visible infrared?"

Thanks,
Rich

 

[Rich Grise]

On Sun, 03 May 2009 02:25:49 -0400, RFI-EMI-GUY wrote:

Eeyore wrote:
RFI-EMI-GUY wrote:
John Larkin wrote, but R-E-G snipped his attribution:
(snip)
:Visible infrared?

Maybe I meant "near infrared". Indeed it is red and very warm light.

Presumably the optical pass-band of the PVC.

What I am seeing seems to contradict the PVC spectral absorption curve.

What time of day?

Thanks
Rich

 

[John Larkin]

On Mon, 04 May 2009 18:16:45 GMT, Rich Grise <richgrise@example.net>
wrote:

On Sun, 03 May 2009 22:08:40 -0400, Spehro Pefhany wrote:
On Sun, 3 May 2009 17:32:18 -0700 (PDT), the renowned Greegor
On May 3, 7:23 pm, John Larkin

These crappy RatShack terminal posts are actually conductive!

http://www.radioshack.com/product/index.jsp?productId=2103639

A pair of them leak 12 pA to the chassis at +1 volt. If I ground
myself and hold the plastic screw part of one, it goes up to 20.

So I'll have to replace them with some Pomonas or something. What a
nuisance.

Pity; they do look nice.

0.000000012 Amp? LOL

No, that's 12nA. 12pA is 1/1000 of that:

0.000000000012 A

Doesn't humid air itself have that kind of leakage? ;-)

Cheers!
Rich

RH is 63% here right now, and I'm seeing about 5 fA. That's 5
microvolts across a 1G resistor.

Plenty good enough for testing diodes and jfets.

John

 

[Rich Grise]

On Sat, 02 May 2009 19:09:28 -0400, RFI-EMI-GUY wrote:

(snip John Larkin's attribution)
:Visible infrared?

Maybe I meant "near infrared". Indeed it is red and very warm light.

If it's visible, then by definition it's not "infrared".

Hope This Helps!
Rich

 

On May 4, 1:46 am, alertj...@rediffmail.com wrote:

Based on trends in mask and design costs for standard cells, vs. FGPA
capabilities, do
you believe the number of new designs per year executed in standard
cells will increase
or decrease in the future as compared with a baseline of 2007 ?

I think it will increase, what do you think ?

Neither.

The ever-increasing costs of mask sets for any kind of custom chip and
the ever-increasing cost of getting decent cost and performance out of
FPGAs will lead to more hybrid pattern-able custom chips: SoCs with
hard-coded processor / DSP / memory / standard peripheral cores but
with final metal mask(s)- or fuse- or flash- programmable logic cell
and/or analog array areas for specific applications. Vendors that
cover as much application / volume space as possible with the least
investment and best service (models, tool chains, prototype
turnaround, application support, etc.) will be the big winners (as in
every other generational transition of semi-custom silicon product).
Think Microchip (or higher-order) with FPGA and/or programmable analog
blocks.

--
Silvar Beitel

 

On May 4, 12:54 pm, "keith...@gmail.com" <keith...@gmail.com> wrote:

On May 4, 11:42 am, alertj...@rediffmail.com wrote:



On May 4, 8:58 am, "keith...@gmail.com" <keith...@gmail.com> wrote:

On May 4, 12:46 am, alertj...@rediffmail.com wrote:

Based on trends in mask and design costs for standard cells, vs. FGPA
capabilities, do
you believe the number of new designs per year executed in standard
cells will increase
or decrease in the future as compared with a baseline of 2007 ?

I think it will increase, what do you think ?

I think you're nuts, but you can ignore history at your peril.

Dave..You are smart..It was an exam question. But I am not convinced
by the answer professor gave me...that FPGAs will takeoverstandard> celldesigns thereby reducing the number ofstandard celldesigns. I
think as the performance and power of FPGAs will be bad compared to SC
designs, SC designs are always going to be winners
and I dont think FPGAs will take over.

You didn't answer Dave.

FPGAs won't "take over"standard celldesigns any more than digital
esigns will "take over" analog designs or microcontrollers will "take
over" logic designs.  Each has its purpose and the lines will shift.

Standard cells will certainly continue to lose designs to FPGAs as
costs rise.  There will continue to be a niche forstandard cell, as
well as custom logic, for those applications that can afford the costs
(where "afford" == require).

Keith,
I agree that Standard Cells will continue to lose designs to FPGA as
FPGA costs keeps coming down and can hold bigger designs in them.
But, won't the performance/power requirements becomes more and more
stringent when we move into future ? Excuse me for using the term
"take over", displace would be more appropriate.

Jean