Digest for sci.electronics.repair@googlegroups.com - 22 updates in 5 topics

oldschool@tubes.com: Sep 08 10:11PM -0400

I've always wondered how they paint on the colored stripes. I put "how
do they paint the stripes on resistors" on google, but all I got was
links explaining how to READ color codes.
 
Has anyone ever heard anything about this process?
Rheilly Phoull <rheilly@bigslong.com>: Sep 09 12:45PM +0800

> do they paint the stripes on resistors" on google, but all I got was
> links explaining how to READ color codes.
 
> Has anyone ever heard anything about this process?
 
They get the christmas elves in the off season to paint them on with
their toy decorating brushes.
Mike Coon <gravity@mjcoon.plus.com>: Sep 09 08:44AM +0100

In article <05j6rcd2vbktmb6r28k8cj2m01gguob6p5@4ax.com>,
oldschool@tubes.com says...
> do they paint the stripes on resistors" on google, but all I got was
> links explaining how to READ color codes.
 
> Has anyone ever heard anything about this process?
 
No, but after an hour or so hunting through my father's random box of
hundreds of resistors looking for the value I wanted, I got a powerful
urge to take any old one and paint on the right colours... (Never did,
though!)
 
Mike.
John-Del <ohger1s@gmail.com>: Sep 09 03:11AM -0700

> do they paint the stripes on resistors" on google, but all I got was
> links explaining how to READ color codes.
 
> Has anyone ever heard anything about this process?
 
 
 
We could tell you, but then we'd have to kill you. Legal mumbo jumbo out of the way, would you like me to explain it to you?
"Michael A. Terrell" <mike.terrell@earthlink.net>: Sep 09 08:21AM -0400

> do they paint the stripes on resistors" on google, but all I got was
> links explaining how to READ color codes.
 
> Has anyone ever heard anything about this process?
 
Isn't it obvious? Early resistors were hand painted, then they
developed machines for the job.
 
 
 
--
Never piss off an Engineer!
 
They don't get mad.
 
They don't get even.
 
They go for over unity! ;-)
Taxed and Spent <nospamplease@nonospam.com>: Sep 09 05:35AM -0700

On 9/9/2017 5:21 AM, Michael A. Terrell wrote:
 
> Isn't it obvious? Early resistors were hand painted, then they
> developed machines for the job.
 
how did they paint the machines?
Jeff Liebermann <jeffl@cruzio.com>: Sep 09 09:07AM -0700


>I've always wondered how they paint on the colored stripes. I put "how
>do they paint the stripes on resistors" on google, but all I got was
>links explaining how to READ color codes.
 
I suspect you could guess how it's done without any assistance.
 
My guess(tm) is that the resistors are hand painted in Japan as a
spare time project for highly skilled porcelain painters. Whey they
get bored, we get resistors like this:
<https://img0.etsystatic.com/174/0/8168616/il_340x270.1181159266_6pfz.jpg>
<https://www.etsy.com/market/resistor_jewelry>
<https://www.pinterest.com/search/pins/?q=resistor jewelry>
 
>Has anyone ever heard anything about this process?
 
Nope. I couldn't find anything under "axial resistor marking
machine", "axial resistor color code marking device", or something
similar. Nothing under patents. Oddly, the color code itself doesn't
seem to be patented. The marking method is probably part of a highly
automated manufacturing process and either a well protected trade
circuit, or so trivial that nobody has bothered to make a dedicated
resistor marking machine. I'll add it to my list of unexplained
electronic phenomenon.
 
--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
oldschool@tubes.com: Sep 08 11:36PM -0400

On Fri, 8 Sep 2017 09:57:32 -0400, Ralph Mowery
>type of oxygen free copper. They do not take into account that there is
>probably 25 to 100 feet of regular wire going to the breaker box and all
>the other junk wire from there to the power company.
 
If they will pay $100 for 6ft of cord, they can buy a whole mile of it
for a mere $88,000. If the power plant is 25 miles away, for a mere
$2,200,000, they can run a dedicated cord all the way to the generator
at the power plant. This will work as long as no one drives over their
wire, and makes a hole in it, allowing oxygen to enter, which could
cause the cones to blow out of their speakers due to the inrush of
air.... <LOL>
 
 
>Even some old stock solder made at a certain place is going for big
>bucks.
 
Geezzzz, I might be rich and not know it. I have 10 or 12 one pound
spools of old solder from the 50's or 60's. It's the old lead/tin
solder. 60/40 or 50/50. I bought them at a flea market. The guy was
selling them for $3 a roll, and I think I offerred him $20 or $25 for
all of it, and bought it all. I just bought it to use.
 
>the equipment. Probably over 90% could not tell one wine from the other
>if in a glass and not a bottle. Some goes for a few bucks and others
>are auctiioned off for thousnds a bottle.
 
I'm not a wine drinker either, but I was at an event where they had a
craft beer tasting contest. I do drink a little beer from time to time,
and I usually spend a couple bucks extra to get some beer with flavor,
because the commercial stuff is crap. But these people were getting full
bottles of different expensive beers, pouring one or two ounces into
tiny cups, and tasting it. The rest of the bottles were going to waste,
so a few guys were just handing them out to anyone nearby. I had no
complaints about any of them. To me, they were all good, but most tasted
about the same. (I guess thats why no one has ever asked me to be a
beer, wine, or food taster) :)
 
Getting back to electronics,
 
I dont consider myself an audiophile, but I do prefer the sound from a
tube amplifier over solid state, and I find vinyl records far superior
in sound quality to digitized music. (assuming a good record, stylus and
turntable is used). However, these days I am running a 600 watt stereo
commercial solid state Altec Lansing amp from the 70s. Being a good
brand name and commercial gear, I am pretty pleased with it.
 
But for superior sound, I still prefer records. Yet, I have a lot of MP3
songs and some CDs too. Some stuff can not be gotten on vinyl, or it
costs way too much, so I make due with digital music when I must. Some
of that can be compensated by using my equalizer as well as some effects
devices and an audio compressor.
 
But I dont have any $150 capacitors around here, and wont be buying any
either. Especially when they are all made about the same anyhow. Foil,
paper or plastic wound up, two pieces of wire, and a coating to hold it
all together.
 
 
I do have a money making idea though. I'll call them Tootsie Roll
capacitors. I plan to take tootsie rolls, shove a wire in each end, and
sell them on ebay for $100 each (plus shipping). There has to be enough
stupid people to buy them, and if they dont work in a circuit, the buyer
can always remove the wires and eat them..... <LOL>
"Michael A. Terrell" <mike.terrell@earthlink.net>: Sep 09 08:25AM -0400

> solder. 60/40 or 50/50. I bought them at a flea market. The guy was
> selling them for $3 a roll, and I think I offerred him $20 or $25 for
> all of it, and bought it all. I just bought it to use.
 
 
50/50 WAS for plumbing. The only solder that fools will overpay for was
made for the Phone company.
 
 
--
Never piss off an Engineer!
 
They don't get mad.
 
They don't get even.
 
They go for over unity! ;-)
Ralph Mowery <rmowery28146@earthlink.net>: Sep 09 10:32AM -0400

In article <k9udnXt6e5EGQC7EnZ2dnUU7-a_NnZ2d@earthlink.com>,
mike.terrell@earthlink.net says...
> > all of it, and bought it all. I just bought it to use.
 
> 50/50 WAS for plumbing. The only solder that fools will overpay for was
> made for the Phone company.
 
I don't know the money conversions,,,but I bet this stuff is very
expensive as it it sold by lengths of one meter.
 
http://www.ebay.com.au/itm/OYAIDE-SS-47-AUDIOPHILE-SILVER-SOLDER-1-
METRE-LENGTHS-/350557902968
Ralph Mowery <rmowery28146@earthlink.net>: Sep 09 10:35AM -0400

In article <okl6rct4a2d96vgs82du4t5ooda7bnrfsb@4ax.com>,
oldschool@tubes.com says...
 
Getting back to electronics,
> either. Especially when they are all made about the same anyhow. Foil,
> paper or plastic wound up, two pieces of wire, and a coating to hold it
> all together.
 
Ever send your tubes off for the big chill ?
 
http://blog.thetubestore.com/cryo-tube-controversy-the-chilling-truth/
rickman <gnuarm@gmail.com>: Sep 08 02:42PM -0400

~misfit~ wrote on 9/7/2017 7:33 AM:
 
> Ok second guy in this thread to use the term "English units". Am I to assume
> it's an Americanism then? In England, Australia and New Zealand (the
> countries I've lived in) non-metric units are reffered to as "imperial".
 
Imperial units are not quite the same. An imperial gallon is larger than
the gallon used in the US. I don't know if there are other differences, I'm
pretty sure the inch, foot and yard are the same. I'm not sure if a
fortnight is the same on both sides of the Atlantic... ;)
 
We use the term "English units" because like many of our customs, laws and
general ways of life, they came to us by way of England.
 
--
 
Rick C
 
Viewed the eclipse at Wintercrest Farms,
on the centerline of totality since 1998
rickman <gnuarm@gmail.com>: Sep 08 02:44PM -0400

~misfit~ wrote on 9/7/2017 7:26 AM:
 
> "Voluntary conversion" is doomed to failure due to inertia so it's a failure
> of the legislators not the public. It should have been made compulsory as it
> was in most other countries which changed over.
 
This country can be pretty idiotic about "compulsory" issues. The federal
government has a regulation that children must wear life vests in federally
controlled waters. The State of Virginia has a similar law, but it only
applies to the waterways that are regulated by the Coast Guard (federal
laws). So the law is no additional regulation, it simply allows the state
authorities to enforce it. Meanwhile it is perfectly legal in the state
controlled waters to not put a life vest on your children. Allegedly this
is because the legislators get tremendous push back when they pass laws that
add new regulations.
 
How fooking stupid is that?! *Everyone* should have to wear a life vest any
time they are in a boat underway. Just this past July 4th weekend someone
died when he fell overboard while not wearing a life vest. They do nothing
for you if you don't wear them. Cutting a tree down with your six year old
next to you would be considered child endangerment even though there is no
specific law against it. By the same reasoning allowing children to ride in
a boat without a life vest should be child endangerment regardless of the
law. But we legislate according to the push back from fears of "over
regulation".
 
--
 
Rick C
 
Viewed the eclipse at Wintercrest Farms,
on the centerline of totality since 1998
Ralph Mowery <rmowery28146@earthlink.net>: Sep 08 03:19PM -0400

In article <oouoe6$t4r$2@dont-email.me>, gnuarm@gmail.com says...
> a boat without a life vest should be child endangerment regardless of the
> law. But we legislate according to the push back from fears of "over
> regulation".
 
I can see laws like the life vest for children and seat belts or safety
seats for children.
 
What I would really like is for the insurance companies to get togetner
with the law makers and not pay off to the people over 21 that do not
follow those laws. I do not care if some one of reasonable age falls
off the boat without the life vest and drowns. Just don't expect his
life insurance to pay off. Or is someone gets hurt in a car crash
without the seat belt, just do not pay off for medical bills or to get
his car repaired.
"~misfit~" <shaun.at.pukekohe@gmail.com>: Sep 09 06:51PM +1200

Once upon a time on usenet rickman wrote:
>> to as "imperial".
 
> Imperial units are not quite the same. An imperial gallon is larger
> than the gallon used in the US.
 
In the rest of the world is 4.54 litres. Only in the US is 'gallon'
different (approximately 3.75 litres?).
 
> Atlantic... ;)
> We use the term "English units" because like many of our customs,
> laws and general ways of life, they came to us by way of England.
 
Likewise in Australia and New Zealand we owe a lot of our heritage to
England - however we don't call the units "English". It just seemed odd to
me <shrug>
--
Shaun.
 
"Humans will have advanced a long, long way when religious belief has a cozy
little classification in the DSM*."
David Melville (in r.a.s.f1)
(*Diagnostic and Statistical Manual of Mental Disorders)
"~misfit~" <shaun.at.pukekohe@gmail.com>: Sep 09 06:52PM +1200

Once upon a time on usenet rickman wrote:
> same reasoning allowing children to ride in a boat without a
> life vest should be child endangerment regardless of the law. But we
> legislate according to the push back from fears of "over regulation".
 
Very fooking stupid. ;) Are seat belts compulsory yet? It seems an odd mix.
--
Shaun.
 
"Humans will have advanced a long, long way when religious belief has a cozy
little classification in the DSM*."
David Melville (in r.a.s.f1)
(*Diagnostic and Statistical Manual of Mental Disorders)
rickman <gnuarm@gmail.com>: Sep 08 02:49PM -0400

> (*I'm not sure about water, but I mixed up my own tanks
> of gas for a CO2 laser and it took weeks to diffuse...
> surprised the hell out of me.)
 
Yes, it can be slow compared to many uses of the word "slow". I've brewed
tea in glass and watched the tea diffuse. Since the water is hot the
diffusion is faster and the cooling causes some current, so you can actually
watch the tea colored water fall out of the tea bag. At 3 °C diffusion will
be much slower. Stirring mixes up the water to bring fresh to the surface.
Better yet is to push the gas through the water as tiny bubbles which is
what they do at a soda fountain. Nearly instantaneous diffusion.
 
--
 
Rick C
 
Viewed the eclipse at Wintercrest Farms,
on the centerline of totality since 1998
etpm@whidbey.com: Sep 08 01:29PM -0700

On Fri, 8 Sep 2017 00:11:09 -0000 (UTC), "Danny D."
>there is some kind of pragmatic coefficient, that's OK. It works.
 
>I just don't know what I'm doing and why.
>Do you?
I can't tell you how fast it will diffuse if the gas is just exposed
to the one surface of the liquid when the container is upright. But I
can tell you that gentle agitation will greatly shorten the time for
the gas to dissolve into the liquid. A friend of mine, who owns a
brewery, told me how he carbonates beer sometimes in a "Corny" keg.
These are the small diameter kegs seen at portable soda fountains. The
ones he carbonates at home are the 5 gallon size. He fills 'em with
the liquid, pressurizes 'em, then lays them on the floor and rolls
them back and forth for about 1/2 hour while watching TV.
Eric
Mike Coon <gravity@mjcoon.plus.com>: Sep 08 10:02PM +0100

In article <oouoo5$vlg$1@dont-email.me>, gnuarm@gmail.com says...
 
> Yes, it can be slow compared to many uses of the word "slow". I've
brewed
> be much slower. Stirring mixes up the water to bring fresh to the surface.
> Better yet is to push the gas through the water as tiny bubbles which is
> what they do at a soda fountain. Nearly instantaneous diffusion.
 
I think a major area where agitation makes a big difference is in the
absorption of CO2 in sea water. O2 too, for that matter!
 
Mike.
rickman <gnuarm@gmail.com>: Sep 08 07:01PM -0400

Mike Coon wrote on 9/8/2017 5:02 PM:
>> what they do at a soda fountain. Nearly instantaneous diffusion.
 
> I think a major area where agitation makes a big difference is in the
> absorption of CO2 in sea water. O2 too, for that matter!
 
The agitation helps through the creation of tiny bubbles greatly increasing
the surface area. If you think about it the agitation itself would do
nothing. Shake a soda bottle that is 100% full and it won't change the
pressure appreciably. Shake a soda bottle that has some air space and the
increase in pressure from the CO2 coming out of solution will be large.
 
Well... to be honest, I've never actually tried this. It would be worth an
experiment if I had any soda on hand. I have heard of a simple drop causing
a soda bottle to explode. Perhaps that is from both the shock to the bottle
and an increase in pressure from released CO2. To be sure the soda bottle
would need to be 100% full. Shake vigorously or even drop it on the floor
and then open it... well... or maybe a pressure gauge can be attached... lol
 
--
 
Rick C
 
Viewed the eclipse at Wintercrest Farms,
on the centerline of totality since 1998
oldschool@tubes.com: Sep 08 11:58AM -0400

According to a chart I have, they read similar to a resistor.
 
On those Bumble Bee caps, the first two color bands are the value, the
3rd band is the number of zeros. The 4th band is the tolerance (%).
 
After a gap, there are supposed to be two more bands that tell the
voltage. Yet, looking at a few of them that I have laying around, and
pictures of the ones being sold on ebay, I have yet to find any of them
that have TWO bands for the voltage.
 
For example, I have a picture of one right now that has ONE yellow band.
That means "4", which I would consider to be 400v. Is this correct?
Apparently this chart is defective, or else theye stopped using a dual
band for the voltage at some time.....
 
Most of the time, I've just read the schematic and not bothered with the
band colors, because nearly every cap I use as a replacement is rated at
a higher voltage than the originals anyhow.
"Dave M" <dgminala@mediacombb.net>: Sep 08 12:30PM -0500


> Most of the time, I've just read the schematic and not bothered with
> the band colors, because nearly every cap I use as a replacement is
> rated at a higher voltage than the originals anyhow.
 
 
 
You are correct in your description of the Bumble Bee capacitors. The same
coding applies to paper and paper-in-oil capacitors in general (of the era).
The voltage bands can, indeed, consist of two bands if the voltage rating is
1000V or more. For example, voltage bands of Gold-Red would indicate a
1200V rating (Gold being the color for 1000V). Don't remember seeing any
paper capacitors of that high voltage rating, though.
 
Cheers!!
Dave M
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