OT - CRT's

On Saturday, 25 May 2019 21:50:18 UTC+1, jurb...@gmail.com wrote:

** The signal storage is digital, ones and zeros representing binary >numbers derived from sampling the audio - that is what the title >refers to.

Do you mean the title "Digital" ? I missed that part.

The term is suffering. (or it will shortly)

It has been bastardised as indicated by etymology. There are ten Arabic digits, our ten fingers have ten digits. Do the math. We do not have 8, 16, 32, 64, we have ten.

So now digital means quantized to a number.

Well volts and amps are quantized to numbers. Now if you take ananalog transistor and increase the B-E current by the amount that will cause one more electron to go to the output the electron is the quantization level. Infinitesimal but still there.

In fact you can increase the base current to pass one more electron only, but that will cause more than one electron to flow through the transistor.. That has got to be 1 times the hfe or HFE wherever you are on the curve - in electrons. In amperes that is 1/6.28X10^something, whatever, I don't care right now. But one ampere is still a specific quantity of electrons no matter which way you cut it.

Technically it is quantized. That means everything is. Tape, not only how many electrons go through the coils of the tape heads but also it is chopped in in a bit of a similar way as a class D amp. different but somewhat similar.

Another one, if ONE MORE photon comes out of an LED, hits a detector, that is the quantization level. In a tube (valve) if one more electron hits that plate, that is the quantization level and might really be because there is no current to the grid which means it is a charge. I am not saying you CAN control it that well, but it certainly is never happening in a current driven device.

Everything is digital if that is the new definition. But smaller and smaller bits until we get to the atomic level. And they are, it has been years since I got the Fairchilde newsletter but I remember they said they were coming out with a transistor that was only one molecule.

Where can you get if you eliminate most of thee capacitive mass of the devices and make them so small as to significantly reduce the miles of interconnects in like a uProcessor ? I think we'll see this approach used in maybe the next seven years and the speeds will go through the roof and that of course take processing power up with it. That will have to be the time when we slow down or we are going to have it like those Terminator movies.

And the faster processors will allow like old audio to be restored better than ever, or at least reproduced better than ever. And movies ? All they'll have to sell one of these days is the oldies and the only way the can do that with lobbying for the (strictest in the world) copyright laws. That applies especially to movies n shit. They are already doing wonders with the old shit, and I don't mean colorizing them, fuck that. I mean taking and using a good gamma correction properly to restore a real grey scale to this stuff. But new stuff ? People will make it in their basements on MACs that cost all of two days pay. At least in the US people are going to have such good systems in their mansions n there will be no theatres, or even DVD rentals. Their era is almost over like newspapers.

I hijack too much, later.

Class D amps have continuously variable m/s ratio, but only 2 voltage levels in much of the circuit, 0 & 1. They're 1 bit. Unclocked digital circuitry does tend to have the same, continuously variable edge times but 0 & 1 voltage levels, or current in some cases.

You can buy digital shredders now. They have finger-like bits on the plastic case.

It's all a game of semantics. Try not to take it too seriously.


NT

 

[Phil Allison]

tabb...@gmail.com wrote:

It's all a game of semantics.

** The implied meaning of words and terms is not a trivial matter.

Only fools and deceivers play fast and loose with language.

People like Nutcse Thornton.



...... Phil

 

On Sunday, 26 May 2019 23:17:43 UTC+1, Phil Allison wrote:

tabby wrote:

It's all a game of semantics.

** The implied meaning of words and terms is not a trivial matter.

sometimes not, sometimes it is

> Only fools and deceivers play fast and loose with language.

and comedians. And people exploring concepts.

> People like Nutcse Thornton.

it's more the domain of marketing depts. I'm not in one of those.


NT

 

[Phil Allison]

tabb...@gmail.com wrote:

It's all a game of semantics.

** The implied meaning of words and terms is not a trivial matter.

sometimes not, sometimes it is

** NT is a raving lunatic.

Only fools and deceivers play fast and loose with language.

and comedians.

** NT is delusional, likely schizophrenic.

I'm not in one of those.

** A raving loony without the slightest doubt.




..... Phil

 

[Chris Jones]

On 23/05/2019 14:27, Jasen Betts wrote:

On 2019-05-22, Chris Jones <lugnut808@spam.yahoo.com> wrote:
On 21/05/2019 21:57, Bob Engelhardt wrote:
Is there still a use for CRT's?

They collect radioactive dust (I think polonium that results from the
decay of radon) out of the air (it seems to be charged).

If you wipe the entire face of a CRT that has been used a lot recently,
with a tissue (preferably held in such a way that the dust all collects
in a small area of the tissue) then hold this dust in front of a geiger
counter, it will be quite noticably radioactive.

By collecting this radioactive dust out of the air, some of it will be
prevented from lodging in my lungs.

I suspect that the replacement of CRTs with LCDs in households will
eventually result in an increase in lung cancer, though probably only a
small one that may be masked by other changes over the years such as
vehicle emissions.

Also a reduction due to reduced exposure to ozone by not being near
CRTs, also radon isn't everywhere, moslty it's over granite.

Unless there is a problem with the insulation of the anode wire I would
not expect ozone from a CRT TV. Laser printers sure, and TVs that are
arcing internally and about to die, but not working ones.

There is radon present in houses in enough places to make it a
significant cause of lung cancer. Certainly it is present in every house
I have lived in.

 

[John Larkin]

On Wed, 22 May 2019 22:27:34 +1000, Chris Jones
<lugnut808@spam.yahoo.com> wrote:

On 21/05/2019 21:57, Bob Engelhardt wrote:
Is there still a use for CRT's?

They collect radioactive dust (I think polonium that results from the
decay of radon) out of the air (it seems to be charged).

If you wipe the entire face of a CRT that has been used a lot recently,
with a tissue (preferably held in such a way that the dust all collects
in a small area of the tissue) then hold this dust in front of a geiger
counter, it will be quite noticably radioactive.

By collecting this radioactive dust out of the air, some of it will be
prevented from lodging in my lungs.

I suspect that the replacement of CRTs with LCDs in households will
eventually result in an increase in lung cancer, though probably only a
small one that may be masked by other changes over the years such as
vehicle emissions.

Here is some info about the dust:
http://www.techlib.com/science/secondhandsmoke.htm

My uncle Sheldon, who started me in electronics, was a rascal. He had
a TV repair service and had kids go out in trucks to make house calls.
Some sets had the CRT and then a flat cover glass. If people smoked,
particles would accumulate on the CRT face and make the picture dim.
They'd take the set back to the shop, Windex it, and charge for a new
picture tube.


--

John Larkin Highland Technology, Inc trk

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

 

[Jan Panteltje]

On a sunny day (Mon, 27 May 2019 07:37:44 -0700) it happened John Larkin
<jjlarkin@highlandtechnology.com> wrote in
<fatneel5b09lhggfbnith1j0016ermks2e@4ax.com>:

My uncle Sheldon, who started me in electronics, was a rascal. He had
a TV repair service and had kids go out in trucks to make house calls.
Some sets had the CRT and then a flat cover glass. If people smoked,
particles would accumulate on the CRT face and make the picture dim.
They'd take the set back to the shop, Windex it, and charge for a new
picture tube.

I had a TV repair shop for many years,
and you could increase brightness by wiping of the nicotine tar from the smokers with alcohol.
I have been exposed to that stuff so much I should have been dead?
As to the radioactivity, well we had Chernobyl, do not eat vegetables from you garden thing.
Bit of radioactivity is probably good, prevents or kills cancer,
an other place were I worked had the airco filters replaced after Chernobyl because those were so hot.
I run a radiation counter (GM tube) 24/7 and have been logging counts per minute for years now.
Well, bit more of trumpism and it may set of the alarm.
Come to think of it, that barrier in tunnel diodes is a bit like trumps wall,
Nothing can go through, but still life forms tunnel through and jump over it.

hehe
LOL
y

 

[Tauno Voipio]

On 27.5.19 17:52, Jan Panteltje wrote:

On a sunny day (Mon, 27 May 2019 07:37:44 -0700) it happened John Larkin
jjlarkin@highlandtechnology.com> wrote in
fatneel5b09lhggfbnith1j0016ermks2e@4ax.com>:

My uncle Sheldon, who started me in electronics, was a rascal. He had
a TV repair service and had kids go out in trucks to make house calls.
Some sets had the CRT and then a flat cover glass. If people smoked,
particles would accumulate on the CRT face and make the picture dim.
They'd take the set back to the shop, Windex it, and charge for a new
picture tube.

I had a TV repair shop for many years,
and you could increase brightness by wiping of the nicotine tar from the smokers with alcohol.
I have been exposed to that stuff so much I should have been dead?
As to the radioactivity, well we had Chernobyl, do not eat vegetables from you garden thing.
Bit of radioactivity is probably good, prevents or kills cancer,
an other place were I worked had the airco filters replaced after Chernobyl because those were so hot.
I run a radiation counter (GM tube) 24/7 and have been logging counts per minute for years now.
Well, bit more of trumpism and it may set of the alarm.
Come to think of it, that barrier in tunnel diodes is a bit like trumps wall,
Nothing can go through, but still life forms tunnel through and jump over it.

hehe
LOL
y

In worse cases, the high-voltage lead and contents of the HV shield box
had to be cleaned of the tar and dust sitting pasted to the tar. I had
some flash-overs due to the mess.

--

-TV

 

[John Larkin]

On Mon, 27 May 2019 14:52:23 GMT, Jan Panteltje
<pNaOnStPeAlMtje@yahoo.com> wrote:

On a sunny day (Mon, 27 May 2019 07:37:44 -0700) it happened John Larkin
jjlarkin@highlandtechnology.com> wrote in
fatneel5b09lhggfbnith1j0016ermks2e@4ax.com>:

My uncle Sheldon, who started me in electronics, was a rascal. He had
a TV repair service and had kids go out in trucks to make house calls.
Some sets had the CRT and then a flat cover glass. If people smoked,
particles would accumulate on the CRT face and make the picture dim.
They'd take the set back to the shop, Windex it, and charge for a new
picture tube.

I had a TV repair shop for many years,
and you could increase brightness by wiping of the nicotine tar from the smokers with alcohol.

There was also some valuable placebo effect.


--

John Larkin Highland Technology, Inc trk

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

 

[Jan Panteltje]

On a sunny day (Mon, 27 May 2019 11:12:59 -0700) it happened John Larkin
<jjlarkin@highlandtechnology.com> wrote in
<d4aoeepgj7rij7cpg71r8i4h2avukm87t3@4ax.com>:

On Mon, 27 May 2019 14:52:23 GMT, Jan Panteltje
pNaOnStPeAlMtje@yahoo.com> wrote:

On a sunny day (Mon, 27 May 2019 07:37:44 -0700) it happened John Larkin
jjlarkin@highlandtechnology.com> wrote in
fatneel5b09lhggfbnith1j0016ermks2e@4ax.com>:

My uncle Sheldon, who started me in electronics, was a rascal. He had
a TV repair service and had kids go out in trucks to make house calls.
Some sets had the CRT and then a flat cover glass. If people smoked,
particles would accumulate on the CRT face and make the picture dim.
They'd take the set back to the shop, Windex it, and charge for a new
picture tube.

I had a TV repair shop for many years,
and you could increase brightness by wiping of the nicotine tar from the smokers with alcohol.

There was also some valuable placebo effect.

I know what a placebo effect is but how in this relation?

As to radiation, an other place I worked (large linear accelerator)
got badly contaminated with radiation a few years after I left.
Those guys were careless, that was clear from my first day there...
I quit the first day!
Serendipity had me come back there years later...
Fear was overcome? But it was justified in retrospect!

What bothers me is the fear mongering by clueless greenies.
There was a nice video of wildlife after Chernobyl on youtube
how it thrived, wolves, birds in the no go area,
and guess what, it is removed.

Just today I was reading that some genes determine if you become old without
getting things like altzheimer or Parkinson.
In Dutch (use google translate perhaps)
https://nos.nl/artikel/2286526-gen-ontdekt-voor-langer-leven-zonder-dementie-resultaten-spectaculair.html

Makes perfect sense, I worked with 60/40 solder from 4 years upward,
now if you mention the world 'lead' people freeze in fear.

 

[John Larkin]

On Mon, 27 May 2019 19:19:05 GMT, Jan Panteltje
<pNaOnStPeAlMtje@yahoo.com> wrote:

On a sunny day (Mon, 27 May 2019 11:12:59 -0700) it happened John Larkin
jjlarkin@highlandtechnology.com> wrote in
d4aoeepgj7rij7cpg71r8i4h2avukm87t3@4ax.com>:

On Mon, 27 May 2019 14:52:23 GMT, Jan Panteltje
pNaOnStPeAlMtje@yahoo.com> wrote:

On a sunny day (Mon, 27 May 2019 07:37:44 -0700) it happened John Larkin
jjlarkin@highlandtechnology.com> wrote in
fatneel5b09lhggfbnith1j0016ermks2e@4ax.com>:

My uncle Sheldon, who started me in electronics, was a rascal. He had
a TV repair service and had kids go out in trucks to make house calls.
Some sets had the CRT and then a flat cover glass. If people smoked,
particles would accumulate on the CRT face and make the picture dim.
They'd take the set back to the shop, Windex it, and charge for a new
picture tube.

I had a TV repair shop for many years,
and you could increase brightness by wiping of the nicotine tar from the smokers with alcohol.

There was also some valuable placebo effect.

I know what a placebo effect is but how in this relation?

As to radiation, an other place I worked (large linear accelerator)
got badly contaminated with radiation a few years after I left.
Those guys were careless, that was clear from my first day there...
I quit the first day!
Serendipity had me come back there years later...
Fear was overcome? But it was justified in retrospect!

What bothers me is the fear mongering by clueless greenies.
There was a nice video of wildlife after Chernobyl on youtube
how it thrived, wolves, birds in the no go area,
and guess what, it is removed.

Just today I was reading that some genes determine if you become old without
getting things like altzheimer or Parkinson.
In Dutch (use google translate perhaps)
https://nos.nl/artikel/2286526-gen-ontdekt-voor-langer-leven-zonder-dementie-resultaten-spectaculair.html

Makes perfect sense, I worked with 60/40 solder from 4 years upward,
now if you mention the world 'lead' people freeze in fear.

I never work with 60/40 leaded solder.

63/37.


--

John Larkin Highland Technology, Inc trk

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

 

[Jan Panteltje]

On a sunny day (Mon, 27 May 2019 13:24:48 -0700) it happened John Larkin
<jjlarkin@highlandtechnology.com> wrote in
<gqhoeeht8bg420dhs9spj2m0cgm3vhs8ko@4ax.com>:

On Mon, 27 May 2019 14:52:23 GMT, Jan Panteltje
pNaOnStPeAlMtje@yahoo.com> wrote:
https://nos.nl/artikel/2286526-gen-ontdekt-voor-langer-leven-zonder-dementie-resultaten-spectaculair.html

Makes perfect sense, I worked with 60/40 solder from 4 years upward,
now if you mention the world 'lead' people freeze in fear.

I never work with 60/40 leaded solder.

63/37.

I still use it:
http://panteltje.com/pub/60_40_solder_IMG_6939.JPG

Have some other stuff too, silver, other ratios.

I figured out your placebo comment, no I always tried to do a honest trade.
No lack of customers, people will find out,
if not from you then from an other repair shop.
'tube was replaced' 'no that is an old one'.

My uncle had a jewel and watch repair shop, in my high school days I would
sneak there. It is in the genes, mechanics and soldering, grandfather too.

 

[Clive Arthur]

On 21/05/2019 12:57, Bob Engelhardt wrote:
> Is there still a use for CRT's?

Storing vacuum. It has to go somewhere.

Cheers
--
Clive

 

[Jan Panteltje]

On a sunny day (Tue, 28 May 2019 00:16:38 +0100) it happened Clive Arthur
<cliveta@nowaytoday.co.uk> wrote in <qchr4m$v90$1@dont-email.me>:

On 21/05/2019 12:57, Bob Engelhardt wrote:
Is there still a use for CRT's?

Storing vacuum. It has to go somewhere.

I thought they used politician heads for that?

 

On Monday, 27 May 2019 11:40:24 UTC+1, Phil Allison wrote:

tabb wrote:



It's all a game of semantics.

** The implied meaning of words and terms is not a trivial matter.

sometimes not, sometimes it is



** NT is a raving lunatic.



Only fools and deceivers play fast and loose with language.

and comedians.


** NT is delusional, likely schizophrenic.


I'm not in one of those.


** A raving loony without the slightest doubt.




.... Phil

I guess ad hominem is one way to concede.

 

[Phil Allison]

tabb...raving lunatic troll.

On Monday, 27 May 2019 11:40:24 UTC+1, Phil Allison wrote:
tabb wrote:



It's all a game of semantics.

** The implied meaning of words and terms is not a trivial matter.

sometimes not, sometimes it is



** NT is a raving lunatic.



Only fools and deceivers play fast and loose with language.

and comedians.


** NT is delusional, likely schizophrenic.


I'm not in one of those.


** A raving loony without the slightest doubt.



I guess ad hominem is one way to concede.

** Never any point in debating raving lunatic.

That WOULD be a fool's errand.




.... Phil

 

Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> wrote in news:qchij2$j6e$1
@dont-email.me:

I never work with 60/40 leaded solder.

63/37.

I still use it:
http://panteltje.com/pub/60_40_solder_IMG_6939.JPG

60/40 is lame for electronics. The military, and science community
studied and settled on 63/37 over half a century ago.


You were right about at least one thing. Metallic form lead is not
an environmental hazard.

So your 60/40 and my (and the rest of the EE world) 63/37 is
perfectly fine.

 

Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> wrote in news:qchd7d$gr0$1
@dont-email.me:

What bothers me is the fear mongering by clueless greenies.
There was a nice video of wildlife after Chernobyl on youtube
how it thrived, wolves, birds in the no go area,
and guess what, it is removed.

I saw it... years ago. But the video I saw DID show where
certain species were affected, and a couple new ones may have
morphed out of those.

It DID have an effect. It is not about fear mongering, it is
about basic safety and truth. I doubt the video was removed. More
likely it was cancelled because the poster did not have the right to
post non-public material and the actual copyright owners got it
pulled. Why don't you try to find the video from its actual source?
Or noticing who made the video was not all that high on your brain
list of things to do...

Go build your house right over the failure location. Not out in
the zone... Right over ground zero.

You make some pretty dumb statements sometimes.

 

Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> wrote in
news:qcij9t$c6q$1@dont-email.me:

On a sunny day (Tue, 28 May 2019 00:16:38 +0100) it happened Clive
Arthur <cliveta@nowaytoday.co.uk> wrote in
qchr4m$v90$1@dont-email.me>:

On 21/05/2019 12:57, Bob Engelhardt wrote:
Is there still a use for CRT's?

Storing vacuum. It has to go somewhere.

I thought they used politician heads for that?

No. If they contained a vacuum, they would actually perform better
than what they actually currently contain. And the odor would not be
nearly as bad as it is right now. Yeah, a vacuum would actually be an
improvement with the bat's turds.

 

Clive Arthur <cliveta@nowaytoday.co.uk> wrote in news:qchr4m$v90$1
@dont-email.me:

On 21/05/2019 12:57, Bob Engelhardt wrote:
Is there still a use for CRT's?

Storing vacuum. It has to go somewhere.

Cheers

That's like a light bulb is really a "Dark Sucker", and when you turn
it on, it sucks all the dark out of the room.