Today's Message Index:
----------------------
1. 05:19 AM - Bob Nuckolls, in person (Harley)
2. 07:15 AM - Re: El-Cheeso batteries follow up tests . . (Robert L. Nuckolls, III)
3. 07:34 AM - Re: El-Cheeso batteries (Eric M. Jones)
4. 07:51 AM - Re: Radio Noise Redux (William Yamokoski)
5. 08:00 AM - An item only a true geek will love (Richard Riley)
6. 09:01 AM - Re: Bob Nuckolls, in person (Sally and George)
7. 09:14 AM - Re: El-Cheeso batteries follow up tests . . . (Mickey Coggins)
8. 05:53 PM - Re: An item only a true geek will love (Robert L. Nuckolls, III)
9. 06:04 PM - Revision 11 is in print (Robert L. Nuckolls, III)
10. 07:02 PM - SD-8 Noisy Performance? (J. Mcculley)
11. 08:32 PM - Re: SD-8 Noisy Performance? (Robert L. Nuckolls, III)
Message 1
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| Subject: | Bob Nuckolls, in person |
--> AeroElectric-List message posted by: Harley <harley@agelesswings.com>
Morning, Everyone...
If any of you are curious, like I was, as to who Bob Nuckolls is and
what he sounds like, and have yet to see him at a seminar or Oshkosh, I
found this interview with him.
Besides now knowing a little more about him (not the least what he
sounds like <G>) it's very informative, as to his goals and experience.
http://www.worldtalkradio.com/playlist.asp?SegmentID=13189
Harley Dixon
Message 2
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| Subject: | El-Cheeso batteries follow up tests . . |
.
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <b.nuckolls@cox.net>
.
At 11:10 PM 5/4/2005 -0400, you wrote:
>--> AeroElectric-List message posted by: "Brian Kraut"
><brian.kraut@engalt.com>
>
>Hmmm, now that you have killed a bunch of batteries how many of the more
>economical ones do you have to use a year to make the experiment break even?
Educational endeavors almost never 'break even' until you share
what is learned as a teacher -or- apply what is learned toward elegant
solutions. You spend a ton of $time$ going to college . . . and
when you get out, you're WAY below break even. It's what
you do with the knowledge and skills afterward that determines
the return on investment. I treat my career as an ongoing
educational process that demands a continuous investment in $time$
for learning. I carry around a lot of data that may never be tapped
in a design task. So it seems the best use of any knowledge is to
share it with as many folks as possible. Knowledge is the one
commodity that does not diminish in value the more it is shared.
Being able to share those data with folks here on the list is the
first opportunity to reap benefits from the investment. As to
application of this information into future design efforts,
who knows? But like data store in any library, you can't tap
the information contained in a book if the book is not on the
shelf waiting to be read.
Bob . . .
Message 3
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| Subject: | RE: El-Cheeso batteries |
--> AeroElectric-List message posted by: "Eric M. Jones" <emjones@charter.net>
Bob,
You need to enlist a cute secretary to stage a "9V Battery Race". Entry fee
$1 to a worthwhile charity. The entrants must write their name on their own
new 9V battery. The rest is details. You get the data for free.
I want to suggest, as in my previous post, that the load on the battery may
produce different results--to wit: The best battery at 100 mA may not be the
best at either 10 mA or 250 mA. Batteries are very sensitive to the test
conditions.
For some applications there are great choices:
Zinc-air battery Duracell #146 . Their nominal voltage is 8.4V but they pack
in 1500 mA-hours. Their cost is very reasonable, but they should be used
only for low current-draw applications.
Lithium batteries are available in 9V sizes and are exceptional for all
tasks.
NiMH rechargeables are still the battery of choice for most portable
applications.
There are tiny little electronic up-converters that can be retrofitted to
portable devices to produce 9V from a couple AA's. These schemes are very
efficient See: http://www.siliconchip.com.au/cms/A_100886/article.html The
advantages are cost and voltage maintenance over life. This little circuit
needs to be updated with newer parts that work even better.
Ebay is the place to get great deals on batteries.
Regards,
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge MA 01550-2705
Phone (508) 764-2072
Email: emjones@charter.net
"Competition brings out the best in products and the worst in people."
- David Sarnoff
Message 4
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| Subject: | Re: Radio Noise Redux |
--> AeroElectric-List message posted by: "William Yamokoski" <yamokosk@lakemichigancollege.edu>
Hi Folks,
Thanks very much for the input. It certainly seemed like
ignition-related to me.
<Sounds like ignition noise getting into the mic audio. Try
pushing the mic hi leads out of their pins on the back of the
radio (pins 1 and 3 assuming you're using both). Key up the
radio with mic audio leads disconnected and see if the noise
goes away.
I suspect it will. Have you insulated the mic and headset jacks
from airframe ground? See:>
I tried Bob's suggestion of disconnecting the mic audio leads....this
had no effect on the noise. I retained this configuration and tied
the radio into the separate battery. Now I got no mike function at
all...no evidence of any transmission. The little red light on the
face of the radio did not come on. At this point I should have stepped
away, because further fiddling with things resulted in reversing
polarity on the battery and frying the radio. Sigh...
Infazed, I plugged the harness into my backup MicroAir 760 and noticed
that it came on even though both the radio and intercom ground wires
were hanging in the breeze, not connected to anything. Then I managed
to fry that radio too
This sure is fun
Any more thoughts (other than take a few days rest! I already figured
that out:)
Bill Yamokoski
Message 5
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| Subject: | An item only a true geek will love |
--> AeroElectric-List message posted by: Richard Riley <Richard@Riley.net>
Ebay has an original Loewe OE333 radio, with the 3NF tube, for auction
http://tinyurl.com/7pppu
It's up to $600.
The 3NF is the first integrated circuit ever made. At the time, in
Germany, radios were taxed on how many tubes they had. Loewe responded in
1926 by building the 3nf, a single tube with several components - typically
three triodes, two capacitors and four resistors. They are works of
art. http://homepage.ntlworld.com/electricstuff/loewe.html
I've seen a few of the tubes come up on Ebay, they seem to go for about
$250-300. I've never seen one of the radios.
Message 6
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| Subject: | Bob Nuckolls, in person |
--> AeroElectric-List message posted by: "Sally and George" <aeronut58@hotmail.com>
If you ever have a chance to attend one of the periodic seminars he puts on,
jump at it. Not only is it a pleasure to meet this nice person, but the
information that spills from his lips is like an endless stream of gold,
whether you're a Tesla or a tyro.
George Kilishek
Harley Dixon wrote:
>
>
>If any of you are curious, like I was, as to who Bob Nuckolls is and
>what he sounds like, and have yet to see him at a seminar or Oshkosh, I
>found this interview with him.
>
>Besides now knowing a little more about him (not the least what he
>sounds like <G>) it's very informative, as to his goals and experience.
>
>http://www.worldtalkradio.com/playlist.asp?SegmentID=13189
>
>Harley Dixon
>
>
Message 7
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| Subject: | Re: El-Cheeso batteries follow up tests . . . |
--> AeroElectric-List message posted by: Mickey Coggins <mick-matronics@rv8.ch>
> Being able to share those data with folks here on the list is the
> first opportunity to reap benefits from the investment. ...
I can confirm that you have saved me *a lot* of money on
batteries over the past year or so. After reading your
analysis of AA batteries, I only buy Ikea "brand" batteries
here in Switzerland, and they are about 1/3 the price of
all others. They last just as long if not longer, and
with two little kids, I use these things like I used
to use diapers.
Thanks!
--
Mickey Coggins
http://www.rv8.ch/
#82007 Wiring
Message 8
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| Subject: | Re: An item only a true geek will love |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <b.nuckolls@cox.net>
At 07:57 AM 5/5/2005 -0700, you wrote:
>--> AeroElectric-List message posted by: Richard Riley <Richard@Riley.net>
>
>Ebay has an original Loewe OE333 radio, with the 3NF tube, for auction
>
>http://tinyurl.com/7pppu
>
>It's up to $600.
>
>The 3NF is the first integrated circuit ever made. At the time, in
>Germany, radios were taxed on how many tubes they had. Loewe responded in
>1926 by building the 3nf, a single tube with several components - typically
>three triodes, two capacitors and four resistors. They are works of
>art. http://homepage.ntlworld.com/electricstuff/loewe.html
>
>I've seen a few of the tubes come up on Ebay, they seem to go for about
>$250-300. I've never seen one of the radios.
Great find Richard. Thanks for sharing this. I've written
the owner of this site for permission to use some of his
photography and documentation in some of my lunchtime learning
sessions I do out at RAC.
I've got a veritable museum of antique components stacked
away in boxes. Some day, I'm going to photograph all the
parts and produce a website much like Mike's except I'll
run further afield in describing components while his
effort concentrates on glass. I need to get retired from
RAC so I can spend 8 more hours a day with this fun stuff!
Bob . . .
Message 9
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| Subject: | Revision 11 is in print |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <b.nuckolls@cox.net>
Looked over a proof copy of R11 from the printer today and
gave them a green light to run the presses. If any of you
have an R10 book on order, you'll be receiving an R11 book
at the R10 price.
Folks with R10 editions in hand may download and print the update
pages found at: http://aeroelectric.com/articles/Rev11
There are three .pdf files
RIGHT CLICK these and download them to your hard drive
before you attempt to open them for viewing/printing.
Many browsers have problems opening large .pdf files
directly into Adobe Reader. Down load first, view later.
Bob . . .
--------------------------------------------------------
< Throughout history, poverty is the normal condition >
< of man. Advances which permit this norm to be >
< exceeded -- here and there, now and then -- are the >
< work of an extremely small minority, frequently >
< despised, often condemned, and almost always opposed >
< by all right-thinking people. Whenever this tiny >
< minority is kept from creating, or (as sometimes >
< happens) is driven out of a society, the people >
< then slip back into abject poverty. >
< >
< This is known as "bad luck". >
< -Lazarus Long- >
<------------------------------------------------------>
http://www.aeroelectric.com
Message 10
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| Subject: | SD-8 Noisy Performance? |
7.50 BARRACUDA_HEADER_FP57 RBL: Blacklist relays.ordb
[This mail was handled by an open relay - please]
[visit <<http://ORDB.org/lookup/?host=208.59.156.131>>]
--> AeroElectric-List message posted by: "J. Mcculley" <mcculleyja@starpower.net>
--> AeroElectric-List message posted by: "Larry E. James"
<larry@ncproto.com>
<SNIP>
4) the SD-8 puts out enough to power any essential
electrical requirements - although it will be "noisy" power
and radios may not work as well <SNIP>
Larry,
Have you had some experience with the SD-8 alternator wherein you found
it to be a noise source or had a negative impact on radios?
My aircraft uses only the SD-8 for primary alternator power in a single
battery setup and it has been totally without even a trace of noise in
the radio and intercom system. I don't know of a more noise free
aircraft that I have ever flown. Granted, YMMV, but I'm just curious.
Jim McCulley
Message 11
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| Subject: | Re: SD-8 Noisy Performance? |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <b.nuckolls@cox.net>
At 11:11 PM 5/4/2005 -0400, you wrote:
>--> AeroElectric-List message posted by: "J. Mcculley"
><mcculleyja@starpower.net>
>
>--> AeroElectric-List message posted by: "Larry E. James"
><larry@ncproto.com>
>
>
><SNIP>
>4) the SD-8 puts out enough to power any essential
>electrical requirements - although it will be "noisy" power
>and radios may not work as well <SNIP>
>
>
>Larry,
>
>Have you had some experience with the SD-8 alternator wherein you found
>it to be a noise source or had a negative impact on radios?
>
>My aircraft uses only the SD-8 for primary alternator power in a single
>battery setup and it has been totally without even a trace of noise in
>the radio and intercom system. I don't know of a more noise free
>aircraft that I have ever flown. Granted, YMMV, but I'm just curious.
I'm surprised that Bill would say such a thing. We did tests
years ago wherein the SD-8 was loaded over a range of power
settings with what I recall was a 14,000 uFd capacitor across
the output. Noise levels recorded on the 'scope were well inside
DO-160/Mil-Std-704 expectations/requirements. I.e. this combination
was no worse than any other alternator I've tested.
I looked for the traces I took but can't put my hands on them
right now. I'll publish the data if I find it.
Further, there must be many hundreds of SD-8's flying as
sole sources of engine driven power. This was the product
that launched B&C back about 1984. It was Bill's quest
to purchase front end-bell castings from our (Electro-Mech's)
vacuum pump pad mounted generators for Bonanzas that
brought Bill and I together for the first time.
The SD-8 has been studied several times over the years
for system integration issues and it's never presented
intractable problems.
Bob . . .
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