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Oli Glaser | 1 Feb 2012 05:00

Re: [EE] analog IC design book - free

On 31/01/2012 05:31, Jesse Lackey wrote:
> A bit OT - and a fun read.  From the creator of the 555 timer!
>
> http://www.designinganalogchips.com/
>
> J

Thanks, downloading now. Will save for a long and rainy day with plenty 
of coffee at hand.. :-)

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RussellMc | 1 Feb 2012 12:50
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[EE]:: Free MPPT (Maximum power point tracking) paper.

MPPT.
Nothing too stunning but worth noting.

http://www.iiste.org/Journals/index.php/JETP/article/view/1179/1100

Fuzzy Intelligent Controller for the Maximum Power Point
Tracking of a Photovoltaic Module at Varying Atmospheric
Conditions

Aurobinda Panda* ,M.K.Pathak, S.P.Srivastava
Department Of Electrical Engineering, IIT Roorkee, PO box 247667, Roorkee, India
* E-mail of the corresponding author: aurobind.panda@...
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RussellMc | 1 Feb 2012 13:07
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[EE]:: Converting all incandescent bulbs to CFLs would INCREASE CO2 emissions in some Canadian provinces.

An interesting and remarkably thorough appearing analysis of the
impact of converting from incandescent bulbs to CFL bulbs in Canada.

While country wide this would lead to a new reduction in CO2
emissions, in a number of provinces the net effect would be an
increase in annual CO2 emissions.
I don't have the figures to hand but somebody said that in eg Quebec
the effect would be the same as adding 24,000? motor vehicles on the
roads.
The report notes that some people find the results implausible and
analyses the typical reasons s=and why the results are indeed correct
(they say).

I won't spoil it for you by pointing out t simple reason that this
effect occurs. Ask if you can't see why. (Skim report first).

Report:

           Impact of Conversion to Compact  Fluorescent Lighting, and
other Energy Efficient Devices,
           on Greenhouse Gas Emissions

Site:

<http://www.intechopen.com/source/pdfs/11764/InTech-Impact_of_conversion_to_compact_fluorescent_lighting_and_other_energy_efficient_devices_on_greenhouse_gas_emissions.pdf>
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information | 1 Feb 2012 14:02

[OT]

It's probably because people put it in their spam filter because the
undelete function doesn't work. There is no confirmation email when you
click the undelete function on the web page. :-(

-----Original Message-----
From: piclist-bounces@... [mailto:piclist-bounces <at> mit.edu] On Behalf Of
Joshua Shriver
Sent: den 19 juli 2011 20:18
To: Microcontroller discussion list - Public.
Subject: Re:

Sucks when crap like this gets through, because this isn't the first time
gmail flags it as spam then all of my piclist ends up in <spam>

rabble rabble
-Josh

On Tue, Jul 19, 2011 at 2:14 PM, Tom Wrighton <ckn1ght@...> wrote:
> It's reliable. It helps me!.
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William Couture | 1 Feb 2012 14:35
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[EE] The 6502 is still around

Need one for your latest project?

http://www.tomshardware.com/news/mouser-6502-motorola-6800-cpu-processor,14557.html

Bill

-- 
Psst...  Hey, you... Buddy...  Want a kitten?  straycatblues.petfinder.org

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Xiaofan Chen | 1 Feb 2012 14:45
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Re: [EE] The 6502 is still around

On Wed, Feb 1, 2012 at 9:35 PM, William Couture <bcouture@...> wrote:
> Need one for your latest project?
> http://www.tomshardware.com/news/mouser-6502-motorola-6800-cpu-processor,14557.html

The Sunplus 8-bit MCUs are based on 6502 as well.
http://www.sunplusit.com/english/products/mcu/8bit/features.aspx
http://www.sunplusit.com/download/english/SPMC65XV12_pro.pdf

"SPMC65 CPU core is a SUNPLUSIT new powerful 8-bit CPU derived from
6502 core. The powerful CPU is called SPMC65 CPU and is based on 6502
architecture. Besides 6502 instructions, SPMC65 CPU also supports bit
operations and is compatible with 6502."

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Howard Winter | 1 Feb 2012 14:58
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Re: [OT] Air-con advice wanted

Joe,

I'm assuming you're talking about the building at the corner of Charles St. and Akepiro St. on the West side
of the latter?  It seems to have 4 long, narrow rooflights, 
but it doesn't look like 1,000m^2, but looks could be deceptive.  Sadly, Google decided not to send their
camera car down that way, or even past the end of Charles 
St. so we can't see the building other than from overhead.

Well Job 1 is to get that roof insulated!  Solar energy can contribute up to 1kW per square metre on a good day,
but even allowing for the angle, reflection and 
other losses you may find that tin roof is being hit with up to half a megawatt.  It makes no sense to let that
heat in and then pay good money to get it out again.

If he doesn't need 5m of height, a false ceiling will help too, as it will tend to keep the warm air above it in
Summer and below it in Winter.  Otherwise trying to heat 
the air in Winter will result in a nice warm ceiling and cold people!

Trying to solve it with AirCon alone is not on unless you have a free electricity supply... speaking of
which, why not put solar panels on the roof?  Removes (some 
of) the heating of the roof in Summer, and provides electricity to help power the AirCon - Win/Win!  :-)

Oh, and that roller-shutter is likely to be drafty in Winter, even when it's closed, so building something
inside (an enclosed loading bay or something) to keep that 
cold air from the body of the bulding would be a Good Thing.

Cheers,

Howard Winter
St.Albans, England
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Howard Winter | 1 Feb 2012 15:02
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Re: [OT] Air-con advice wanted

Joe,

Oh, and 1 Btu/hr is about 0.29W  :-)

Cheers,

Howard Winter
St.Albans, England

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IVP | 2 Feb 2012 00:48
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Re: [OT] Air-con advice wanted

> Joe,
>
> I'm assuming you're talking about the building at the corner of Charles 
> St.
> and Akepiro St. on the West side of the latter?  It seems to have 4 long,
> narrow rooflights, but it doesn't look like 1,000m^2, but looks could be
> deceptive

Hey Howard, long time no read

I tend to agree. I was told 1000 but on closer inspection of that photo it
seems more like 500. You'll notice that it's surrounded by concrete and
tarmac, for better or worse

> Well Job 1 is to get that roof insulated!  Solar energy can contribute up
> to 1kW per square metre on a good day, but even allowing for the angle,
> reflection and other losses you may find that tin roof is being hit with 
> up
> to half a megawatt.  It makes no sense to let that heat in and then pay
> good money to get it out again

My offer so far has been to make at least one of those rooflights openable,
which would solve the short-term problem of them baking in summer. Which
it is now and they are. She's put up some lightweight material to keep the 
sun
off the floor and that's helping. But of course when it rains heavily, oh 
the
noise !! Only some decent continuous insulation/padding is going to block
that. Plus Auckland gets very humid in the summer so even on cloudy days
it can be quite uncomfortably warm and muggy, like it is today. Ugh
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YES NOPE9 | 2 Feb 2012 05:19
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[OT] Looking for donations for educational organization 99thefactory

As I mentioned before ....
I and my associates are putting together an educational effort that will include a building for classes /
seminars / training....
Our efforts will focus on helping inventors , self-starters , etc. with technical and business issues.
90% of our efforts will be FLOSS based.
We like the Khan Academy approach.

We are tentatively calling this theFactory.
We invite any comments or advice or collaborations
http://resume.radmi.com/Resume_CV/theFactory.html

Gus
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Gmane