Eddie Currents

Guest
Sounds like a minor mobster.

https://www.electronicdesign.com/analog/11-myths-about-inductive-position-sensors

See Fig 1.

I remember when Electronic Design often made sense.




--

John Larkin Highland Technology, Inc

lunatic fringe electronics
 
On 10/14/19 11:11 PM, jlarkin@highlandsniptechnology.com wrote:
Sounds like a minor mobster.

https://www.electronicdesign.com/analog/11-myths-about-inductive-position-sensors

See Fig 1.

I remember when Electronic Design often made sense.

Eddie Currents possibly associated with the notorious Eddie Coyle:

<https://www.youtube.com/watch?v=vWdqoPHW-F8>
 
On 2019-10-14 23:11, jlarkin@highlandsniptechnology.com wrote:
Sounds like a minor mobster.

Where have you been? Eddie Current is famous for inventing the LVDT :
"Linear Voltage Displacement Transformer", according to the article. ;)

https://www.electronicdesign.com/analog/11-myths-about-inductive-position-sensors

See Fig 1.

I remember when Electronic Design often made sense.

Most recently around 1995, iirc.

Cheers

Phil Hobbs
(Who BITD learned a fair amount from ED, EDN, and especially RF Design.)


--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com
 
jlarkin@highlandsniptechnology.com wrote in
news:mtdaqe1ij8kv9bt3grdkhipls6ue6m57li@4ax.com:

Sounds like a minor mobster.

https://www.electronicdesign.com/analog/11-myths-about-inductive-po
sition-sensors

See Fig 1.

I remember when Electronic Design often made sense.

Eddie who?

Eddie Currants?

Does he Edify The Church?
 
On Tuesday, October 15, 2019 at 2:11:17 PM UTC+11, jla...@highlandsniptechnology.com wrote:
Sounds like a minor mobster.

https://www.electronicdesign.com/analog/11-myths-about-inductive-position-sensors

See Fig 1.

I remember when Electronic Design often made sense.

That would have been back when you could still remember how to spell "eddy".

Dementia does leave you feeling confused.

--
Bill Sloman, Sydney
 
Eddie who?

 Eddie Currants?
He's the LVDT's raisin d'etre.

(If you'd even skimmed the article, you'd have gotten the jokes--JL was pointing out one of several illiterate mistakes found there, hence the lament about ED's quality having tanked.)

Cheers

Phil Hobbs

(inknown to the Microchip marketing droid who wrote the piece, LVDT is "linear differential _variable_ transformer.)
 
pcdhobbs@gmail.com wrote in
news:1d47167c-8385-4c25-83cf-c5949e87c8eb@googlegroups.com:

Eddie who?

 Eddie Currants?
He's the LVDT's raisin d'etre.

(If you'd even skimmed the article, you'd have gotten the
jokes--JL was pointing out one of several illiterate mistakes
found there, hence the lament about ED's quality having tanked.)

I did look. All I saw was "eddie" being incorrectly spelled.

Did not see many if any literary errors. But I did just quick glance
it.

Cheers

Phil Hobbs

(inknown to the Microchip marketing droid who wrote the piece,
LVDT is "linear differential _variable_ transformer.)

Yeah I saw that as well. But I decided to leave it alone.

You must be experiencing a bit of mild dyslexia in your old age. You
got your 'differential' and your 'variable' swapped. :)

Hey Phil... I am the inknown critic. ;-)
 
On Tue, 15 Oct 2019 01:20:02 -0400, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:

On 2019-10-14 23:11, jlarkin@highlandsniptechnology.com wrote:
Sounds like a minor mobster.


Where have you been? Eddie Current is famous for inventing the LVDT :
"Linear Voltage Displacement Transformer", according to the article. ;)

https://www.electronicdesign.com/analog/11-myths-about-inductive-position-sensors

See Fig 1.

I remember when Electronic Design often made sense.

Most recently around 1995, iirc.

Cheers

Phil Hobbs
(Who BITD learned a fair amount from ED, EDN, and especially RF Design.)

I thought you might enjoy the single-winding transformer and its
interesting field lines.

I think I have seen billboards for Eddie Currents and His Rythm
Machine playing at an Indian Casino lounge.



--

John Larkin Highland Technology, Inc

lunatic fringe electronics
 
jlarkin@highlandsniptechnology.com wrote in
news:pujbqepjjco6ouijqmctuolv98o2rj7c58@4ax.com:

On Tue, 15 Oct 2019 01:20:02 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

On 2019-10-14 23:11, jlarkin@highlandsniptechnology.com wrote:
Sounds like a minor mobster.


Where have you been? Eddie Current is famous for inventing the
LVDT : "Linear Voltage Displacement Transformer", according to the
article. ;)

https://www.electronicdesign.com/analog/11-myths-about-inductive-
position-sensors

See Fig 1.

I remember when Electronic Design often made sense.

Most recently around 1995, iirc.

Cheers

Phil Hobbs
(Who BITD learned a fair amount from ED, EDN, and especially RF
Design.)

I thought you might enjoy the single-winding transformer and its
interesting field lines.

I think I have seen billboards for Eddie Currents and His Rythm
Machine playing at an Indian Casino lounge.



And why were you playing at an Indian Casino Lounge? :)

Indian? Wouldn't it be Eddie Currants then?
 
jlarkin@highlandsniptechnology.com wrote in
news:eknbqed61k70l1u2nbjthkkmp42f5jcoka@4ax.com:

On Tue, 15 Oct 2019 01:20:02 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

On 2019-10-14 23:11, jlarkin@highlandsniptechnology.com wrote:
Sounds like a minor mobster.


Where have you been? Eddie Current is famous for inventing the
LVDT : "Linear Voltage Displacement Transformer", according to the
article. ;)

https://www.electronicdesign.com/analog/11-myths-about-inductive-
position-sensors

See Fig 1.

I remember when Electronic Design often made sense.

Most recently around 1995, iirc.

Cheers

Phil Hobbs
(Who BITD learned a fair amount from ED, EDN, and especially RF
Design.)

Remember bingo cards? The mags and the cards kept us up to date.

Given the importance of the electronics industry, the publications
are now disgraceful. They might hire some retired-actual-EEs to
check their stuff before they publish.

The microwave and optics and aerospace mags are still good.

I am relieved to learn that inductive sensors don't measure
inductance.

Another mispeller... Unless they actually say "tray - sis - tor"
over there.

<http://www.mediafire.com/view/61ozc5v3c11cu0s/O-pequeno-
trasistor.jpg#>
 
On Tue, 15 Oct 2019 14:34:55 +0000 (UTC),
DecadentLinuxUserNumeroUno@decadence.org wrote:

jlarkin@highlandsniptechnology.com wrote in
news:pujbqepjjco6ouijqmctuolv98o2rj7c58@4ax.com:

On Tue, 15 Oct 2019 01:20:02 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

On 2019-10-14 23:11, jlarkin@highlandsniptechnology.com wrote:
Sounds like a minor mobster.


Where have you been? Eddie Current is famous for inventing the
LVDT : "Linear Voltage Displacement Transformer", according to the
article. ;)

https://www.electronicdesign.com/analog/11-myths-about-inductive-
position-sensors

See Fig 1.

I remember when Electronic Design often made sense.

Most recently around 1995, iirc.

Cheers

Phil Hobbs
(Who BITD learned a fair amount from ED, EDN, and especially RF
Design.)

I thought you might enjoy the single-winding transformer and its
interesting field lines.

I think I have seen billboards for Eddie Currents and His Rythm
Machine playing at an Indian Casino lounge.



And why were you playing at an Indian Casino Lounge? :)

Stretches of I80 are festooned with billboards of happy gamblers
(usually Asian) and has-been bands. It's sad that a band goes from
Golden Record to Las Vegas to Reno to Indian casinos.

Indian? Wouldn't it be Eddie Currants then?

Raisin the standards.



--

John Larkin Highland Technology, Inc

lunatic fringe electronics
 
On Tue, 15 Oct 2019 01:20:02 -0400, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:

On 2019-10-14 23:11, jlarkin@highlandsniptechnology.com wrote:
Sounds like a minor mobster.


Where have you been? Eddie Current is famous for inventing the LVDT :
"Linear Voltage Displacement Transformer", according to the article. ;)

https://www.electronicdesign.com/analog/11-myths-about-inductive-position-sensors

See Fig 1.

I remember when Electronic Design often made sense.

Most recently around 1995, iirc.

Cheers

Phil Hobbs
(Who BITD learned a fair amount from ED, EDN, and especially RF Design.)

Remember bingo cards? The mags and the cards kept us up to date.

Given the importance of the electronics industry, the publications are
now disgraceful. They might hire some retired-actual-EEs to check
their stuff before they publish.

The microwave and optics and aerospace mags are still good.

I am relieved to learn that inductive sensors don't measure
inductance.





--

John Larkin Highland Technology, Inc

lunatic fringe electronics
 
On Tue, 15 Oct 2019 10:58:56 -0500, amdx <nojunk@knology.net> wrote:

On 10/15/2019 8:59 AM, jlarkin@highlandsniptechnology.com wrote:
On Tue, 15 Oct 2019 01:20:02 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

On 2019-10-14 23:11, jlarkin@highlandsniptechnology.com wrote:
Sounds like a minor mobster.


Where have you been? Eddie Current is famous for inventing the LVDT :
"Linear Voltage Displacement Transformer", according to the article. ;)

https://www.electronicdesign.com/analog/11-myths-about-inductive-position-sensors

See Fig 1.

I remember when Electronic Design often made sense.

Most recently around 1995, iirc.

Cheers

Phil Hobbs
(Who BITD learned a fair amount from ED, EDN, and especially RF Design.)

I thought you might enjoy the single-winding transformer and its
interesting field lines.


I am assuming you noticed that half of the lines of force are drawn
incorrectly? Or did my 11th grade electronics course fail me?

They cancel to zero field at the center of the coil.


It looks like two turns on the primary, and I wish they had shown the
secondaries.

It's a transformer. It doesn't have secondaries!

On the electric vehicle, how well is a compass going to work? Ask
just to say I once had a dash mounted compass, I had to cross a bridge
to and from work, When I drove at 40mph across the bridge, the compass
would make a full 90* swivel before coming back to proper orientation.
If I went faster it didn't quite make the 90*.
Mikek

The compass in my Audi rear-view mirror usually works pretty well, but
a steel bridge might mess up any magnetic compass. There is a
drive-in-circles cal procedure that I haven't tried.



--

John Larkin Highland Technology, Inc

lunatic fringe electronics
 
On 10/15/2019 8:59 AM, jlarkin@highlandsniptechnology.com wrote:
On Tue, 15 Oct 2019 01:20:02 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

On 2019-10-14 23:11, jlarkin@highlandsniptechnology.com wrote:
Sounds like a minor mobster.


Where have you been? Eddie Current is famous for inventing the LVDT :
"Linear Voltage Displacement Transformer", according to the article. ;)

https://www.electronicdesign.com/analog/11-myths-about-inductive-position-sensors

See Fig 1.

I remember when Electronic Design often made sense.

Most recently around 1995, iirc.

Cheers

Phil Hobbs
(Who BITD learned a fair amount from ED, EDN, and especially RF Design.)

I thought you might enjoy the single-winding transformer and its
interesting field lines.

I am assuming you noticed that half of the lines of force are drawn
incorrectly? Or did my 11th grade electronics course fail me?
It looks like two turns on the primary, and I wish they had shown the
secondaries.
On the electric vehicle, how well is a compass going to work? Ask
just to say I once had a dash mounted compass, I had to cross a bridge
to and from work, When I drove at 40mph across the bridge, the compass
would make a full 90* swivel before coming back to proper orientation.
If I went faster it didn't quite make the 90*.
Mikek
 
jlarkin@highlandsniptechnology.com wrote in
news:5vsbqeh2g8jddc05jb0g7omjvlj11t4u93@4ax.com:

On Tue, 15 Oct 2019 10:58:56 -0500, amdx <nojunk@knology.net
wrote:

On 10/15/2019 8:59 AM, jlarkin@highlandsniptechnology.com wrote:
On Tue, 15 Oct 2019 01:20:02 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

On 2019-10-14 23:11, jlarkin@highlandsniptechnology.com wrote:
Sounds like a minor mobster.


Where have you been? Eddie Current is famous for inventing the
LVDT : "Linear Voltage Displacement Transformer", according to
the article. ;)

https://www.electronicdesign.com/analog/11-myths-about-inductiv
e-position-sensors

See Fig 1.

I remember when Electronic Design often made sense.

Most recently around 1995, iirc.

Cheers

Phil Hobbs
(Who BITD learned a fair amount from ED, EDN, and especially RF
Design.)

I thought you might enjoy the single-winding transformer and its
interesting field lines.


I am assuming you noticed that half of the lines of force are
drawn
incorrectly? Or did my 11th grade electronics course fail me?

They cancel to zero field at the center of the coil.


It looks like two turns on the primary, and I wish they had
shown the
secondaries.

It's a transformer. It doesn't have secondaries!

On the electric vehicle, how well is a compass going to work?
Ask
just to say I once had a dash mounted compass, I had to cross a
bridge to and from work, When I drove at 40mph across the bridge,
the compass would make a full 90* swivel before coming back to
proper orientation.
If I went faster it didn't quite make the 90*.
Mikek





The compass in my Audi rear-view mirror usually works pretty well,

That is where the readout is. Most likely it is coming from the
GPS in the car and getting piped to the mirror via BT or wires along
with the power. There is a chance that they put a compass cicuit in
the mirror, but it makes more sense to use the GPS as conflicting
outputs might get noted.

but a steel bridge might mess up any magnetic compass. There is a
drive-in-circles cal procedure that I haven't tried.

Your audi have a map display? If so, I would bet the mirror is
just reading out what that gathers.
 
amdx <nojunk@knology.net> wrote in news:qo4qbu$e5b$1@dont-email.me:

> On the electric vehicle, how well is a compass going to work?

My phone's GPS position indicator responds instantly to direction
changes, even if I stand in one spot.

Maybe they dampen the transducer output for the direction indicator,
so it is not so erratic with nearby mag fields.

Anyway works in a car or on a bus. Not sure about high DC electrical
currents. They would likely toss it (the reading) around a lot.
 
On Tue, 15 Oct 2019 17:01:09 +0000 (UTC),
DecadentLinuxUserNumeroUno@decadence.org wrote:

jlarkin@highlandsniptechnology.com wrote in
news:5vsbqeh2g8jddc05jb0g7omjvlj11t4u93@4ax.com:

On Tue, 15 Oct 2019 10:58:56 -0500, amdx <nojunk@knology.net
wrote:

On 10/15/2019 8:59 AM, jlarkin@highlandsniptechnology.com wrote:
On Tue, 15 Oct 2019 01:20:02 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

On 2019-10-14 23:11, jlarkin@highlandsniptechnology.com wrote:
Sounds like a minor mobster.


Where have you been? Eddie Current is famous for inventing the
LVDT : "Linear Voltage Displacement Transformer", according to
the article. ;)

https://www.electronicdesign.com/analog/11-myths-about-inductiv
e-position-sensors

See Fig 1.

I remember when Electronic Design often made sense.

Most recently around 1995, iirc.

Cheers

Phil Hobbs
(Who BITD learned a fair amount from ED, EDN, and especially RF
Design.)

I thought you might enjoy the single-winding transformer and its
interesting field lines.


I am assuming you noticed that half of the lines of force are
drawn
incorrectly? Or did my 11th grade electronics course fail me?

They cancel to zero field at the center of the coil.


It looks like two turns on the primary, and I wish they had
shown the
secondaries.

It's a transformer. It doesn't have secondaries!

On the electric vehicle, how well is a compass going to work?
Ask
just to say I once had a dash mounted compass, I had to cross a
bridge to and from work, When I drove at 40mph across the bridge,
the compass would make a full 90* swivel before coming back to
proper orientation.
If I went faster it didn't quite make the 90*.
Mikek





The compass in my Audi rear-view mirror usually works pretty well,


That is where the readout is. Most likely it is coming from the
GPS in the car and getting piped to the mirror via BT or wires along
with the power. There is a chance that they put a compass cicuit in
the mirror, but it makes more sense to use the GPS as conflicting
outputs might get noted.

Does GPS give compass direction? How does that work?

but a steel bridge might mess up any magnetic compass. There is a
drive-in-circles cal procedure that I haven't tried.

Your audi have a map display? If so, I would bet the mirror is
just reading out what that gathers.

Yes, it has GPS and map. But how does it know direction?
 
On 10/15/2019 11:33 AM, jlarkin@highlandsniptechnology.com wrote:
On Tue, 15 Oct 2019 10:58:56 -0500, amdx <nojunk@knology.net> wrote:

On 10/15/2019 8:59 AM, jlarkin@highlandsniptechnology.com wrote:
On Tue, 15 Oct 2019 01:20:02 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

On 2019-10-14 23:11, jlarkin@highlandsniptechnology.com wrote:
Sounds like a minor mobster.


Where have you been? Eddie Current is famous for inventing the LVDT :
"Linear Voltage Displacement Transformer", according to the article. ;)

https://www.electronicdesign.com/analog/11-myths-about-inductive-position-sensors

See Fig 1.

I remember when Electronic Design often made sense.

Most recently around 1995, iirc.

Cheers

Phil Hobbs
(Who BITD learned a fair amount from ED, EDN, and especially RF Design.)

I thought you might enjoy the single-winding transformer and its
interesting field lines.


I am assuming you noticed that half of the lines of force are drawn
incorrectly? Or did my 11th grade electronics course fail me?

They cancel to zero field at the center of the coil.


It looks like two turns on the primary, and I wish they had shown the
secondaries.

It's a transformer. It doesn't have secondaries!

What is this referring to, first sentence below image #1.
"Two secondary coils are used to detect this magnetic field, and just
like with a transformer, we use Faraday's law to convert this field into
a voltage."

On the electric vehicle, how well is a compass going to work? Ask
just to say I once had a dash mounted compass, I had to cross a bridge
to and from work, When I drove at 40mph across the bridge, the compass
would make a full 90* swivel before coming back to proper orientation.
If I went faster it didn't quite make the 90*.
Mikek





The compass in my Audi rear-view mirror usually works pretty well, but
a steel bridge might mess up any magnetic compass. There is a
drive-in-circles cal procedure that I haven't tried.
 
tirsdag den 15. oktober 2019 kl. 19.27.03 UTC+2 skrev John Larkin:
On Tue, 15 Oct 2019 17:01:09 +0000 (UTC),
DecadentLinuxUserNumeroUno@decadence.org wrote:

jlarkin@highlandsniptechnology.com wrote in
news:5vsbqeh2g8jddc05jb0g7omjvlj11t4u93@4ax.com:

On Tue, 15 Oct 2019 10:58:56 -0500, amdx <nojunk@knology.net
wrote:

On 10/15/2019 8:59 AM, jlarkin@highlandsniptechnology.com wrote:
On Tue, 15 Oct 2019 01:20:02 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

On 2019-10-14 23:11, jlarkin@highlandsniptechnology.com wrote:
Sounds like a minor mobster.


Where have you been? Eddie Current is famous for inventing the
LVDT : "Linear Voltage Displacement Transformer", according to
the article. ;)

https://www.electronicdesign.com/analog/11-myths-about-inductiv
e-position-sensors

See Fig 1.

I remember when Electronic Design often made sense.

Most recently around 1995, iirc.

Cheers

Phil Hobbs
(Who BITD learned a fair amount from ED, EDN, and especially RF
Design.)

I thought you might enjoy the single-winding transformer and its
interesting field lines.


I am assuming you noticed that half of the lines of force are
drawn
incorrectly? Or did my 11th grade electronics course fail me?

They cancel to zero field at the center of the coil.


It looks like two turns on the primary, and I wish they had
shown the
secondaries.

It's a transformer. It doesn't have secondaries!

On the electric vehicle, how well is a compass going to work?
Ask
just to say I once had a dash mounted compass, I had to cross a
bridge to and from work, When I drove at 40mph across the bridge,
the compass would make a full 90* swivel before coming back to
proper orientation.
If I went faster it didn't quite make the 90*.
Mikek





The compass in my Audi rear-view mirror usually works pretty well,


That is where the readout is. Most likely it is coming from the
GPS in the car and getting piped to the mirror via BT or wires along
with the power. There is a chance that they put a compass cicuit in
the mirror, but it makes more sense to use the GPS as conflicting
outputs might get noted.

Does GPS give compass direction? How does that work?

I don't see how unless you have more than one antenna and calculate from that

but a steel bridge might mess up any magnetic compass. There is a
drive-in-circles cal procedure that I haven't tried.

Your audi have a map display? If so, I would bet the mirror is
just reading out what that gathers.

Yes, it has GPS and map. But how does it know direction?

probably with one of the numerous 3 axis magnetic sensor ICs
 
On Tue, 15 Oct 2019 10:41:41 -0700 (PDT), Lasse Langwadt Christensen
<langwadt@fonz.dk> wrote:

tirsdag den 15. oktober 2019 kl. 19.27.03 UTC+2 skrev John Larkin:
On Tue, 15 Oct 2019 17:01:09 +0000 (UTC),
DecadentLinuxUserNumeroUno@decadence.org wrote:

jlarkin@highlandsniptechnology.com wrote in
news:5vsbqeh2g8jddc05jb0g7omjvlj11t4u93@4ax.com:

On Tue, 15 Oct 2019 10:58:56 -0500, amdx <nojunk@knology.net
wrote:

On 10/15/2019 8:59 AM, jlarkin@highlandsniptechnology.com wrote:
On Tue, 15 Oct 2019 01:20:02 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

On 2019-10-14 23:11, jlarkin@highlandsniptechnology.com wrote:
Sounds like a minor mobster.


Where have you been? Eddie Current is famous for inventing the
LVDT : "Linear Voltage Displacement Transformer", according to
the article. ;)

https://www.electronicdesign.com/analog/11-myths-about-inductiv
e-position-sensors

See Fig 1.

I remember when Electronic Design often made sense.

Most recently around 1995, iirc.

Cheers

Phil Hobbs
(Who BITD learned a fair amount from ED, EDN, and especially RF
Design.)

I thought you might enjoy the single-winding transformer and its
interesting field lines.


I am assuming you noticed that half of the lines of force are
drawn
incorrectly? Or did my 11th grade electronics course fail me?

They cancel to zero field at the center of the coil.


It looks like two turns on the primary, and I wish they had
shown the
secondaries.

It's a transformer. It doesn't have secondaries!

On the electric vehicle, how well is a compass going to work?
Ask
just to say I once had a dash mounted compass, I had to cross a
bridge to and from work, When I drove at 40mph across the bridge,
the compass would make a full 90* swivel before coming back to
proper orientation.
If I went faster it didn't quite make the 90*.
Mikek





The compass in my Audi rear-view mirror usually works pretty well,


That is where the readout is. Most likely it is coming from the
GPS in the car and getting piped to the mirror via BT or wires along
with the power. There is a chance that they put a compass cicuit in
the mirror, but it makes more sense to use the GPS as conflicting
outputs might get noted.

Does GPS give compass direction? How does that work?


I don't see how unless you have more than one antenna and calculate from that



but a steel bridge might mess up any magnetic compass. There is a
drive-in-circles cal procedure that I haven't tried.

Your audi have a map display? If so, I would bet the mirror is
just reading out what that gathers.

Yes, it has GPS and map. But how does it know direction?

probably with one of the numerous 3 axis magnetic sensor ICs

GPS can determine compass direction if the car is in motion, if GPS
tracks its location, and you assume the car is pointed in the
direction that it is going.

I doubt anyone has actually done that.
 

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