Does you soldering iron glow ?

P

Phil Allison

Guest
** Hi to all,

" Does your chewing gum loose its flavour on the bed post overnight "
was THE burning question on everyone's mind back in the 1959 - courtesy
of one Lonnie Donegan. Yep - I am old just enough the remember hearing it
on AM radio.

But my question IS can YOU see any red glow from a typical soldering
iron - in the dark of course. You will need to try this out, in a dark
room, at night - after allowing a few minutes for your eyes to adjust to
the very low light level.

Would just like to know what temperature is needed to create a barely
visible, dull red glow.

So far, I reckon it is a bit less than 370 C.

Any takers?




...... Phil
 
"Phil Allison" <philallison@tpg.com.au> wrote in message
news:688g3gF2rrfhcU1@mid.individual.net...
** Hi to all,

" Does your chewing gum loose its flavour on the bed post overnight " was
THE burning question on everyone's mind back in the 1959 - courtesy of
one Lonnie Donegan. Yep - I am old just enough the remember hearing it
on AM radio.

But my question IS can YOU see any red glow from a typical soldering
iron - in the dark of course. You will need to try this out, in a dark
room, at night - after allowing a few minutes for your eyes to adjust to
the very low light level.

Would just like to know what temperature is needed to create a barely
visible, dull red glow.

So far, I reckon it is a bit less than 370 C.

Any takers?




..... Phil
Click to expand...
Nothing on TV tonight Phil?

Seriously though. The post is electronics related, but most in the industry
are too flat out using their soldering irons and have no time to sit in the
dark wondering if the tip is glowing.
 
Phil Allison wrote:
** Hi to all,

" Does your chewing gum loose its flavour on the bed post overnight "
was THE burning question on everyone's mind back in the 1959 - courtesy
of one Lonnie Donegan. Yep - I am old just enough the remember hearing it
on AM radio.

But my question IS can YOU see any red glow from a typical soldering
iron - in the dark of course. You will need to try this out, in a dark
room, at night - after allowing a few minutes for your eyes to adjust to
the very low light level.

Would just like to know what temperature is needed to create a barely
visible, dull red glow.

So far, I reckon it is a bit less than 370 C.

Any takers?




..... Phil
Click to expand...
Only if the magnetic switch gets stuck. But then you don't need the dark to see
it glowing:)
 
"Glenn"
Phil Allison wrote:

" Does your chewing gum loose its flavour on the bed post overnight "
was THE burning question on everyone's mind back in the 1959 -
courtesy
of one Lonnie Donegan. Yep - I am old just enough the remember
hearing it
on AM radio.

But my question IS can YOU see any red glow from a typical
soldering
iron - in the dark of course. You will need to try this out, in a dark
room, at night - after allowing a few minutes for your eyes to adjust
to
the very low light level.

Would just like to know what temperature is needed to create a barely
visible, dull red glow.

So far, I reckon it is a bit less than 370 C.

Any takers?


Well, Phil's question is actually an interesting one, although not
strictly an electronics question.
Click to expand...

** It is one that electronics types can easily answer - cos they mostly
all own a temp controlled soldering iron.


He is basically asking about
relationship between temperature and electromagnetic radiation.
Click to expand...

** WRONG !

The Q is ALL about the ** sensitivity ** of the human eye to near IR
radiation.


How does an incandescent light work?
Click to expand...

** Ya flick the damn switch - wanker.



To cut a long and complex story short, the cooler the body, the lower
the frequency of electromagnetic radiation. The red end of visible
light in the electromagnetic spectrum is emitted by a body at about
1000 Kelvin (Celsius + 273 = Kelvin). So a soldering iron at 370
Celsius will be at about 640 Kelvin, not that far below the red end of
the visible electromagnetic spectrum. While the peak emission
frequency of EM radiation will be in the infrared and invisible to
normal vision, the shoulders of the emission will run, on one side,
towards the red end of the spectrum... so it is quite possible that a
feint red glow might be visible.
Click to expand...

** Pheeeeeewwwww .....

Now, go see if YOU can see any glow from YOUR iron in the dark.

I take it as granted that your PUNY DICK glows brightly - so keep it
in your trousers during any and all observations.




..... Phil
 
On May 6, 12:23 pm, TonyS <scarboro...@gmail.nspm.com> wrote:
Phil Allison wrote:
** Hi to all,

" Does your chewing gum loose its flavour on the bed post overnight "
was THE burning question on everyone's mind back in the 1959 - courtesy
of one Lonnie Donegan. Yep - I am old just enough the remember hearing it
on AM radio.

But my question IS can YOU see any red glow from a typical soldering
iron - in the dark of course. You will need to try this out, in a dark
room, at night - after allowing a few minutes for your eyes to adjust to
the very low light level.

Would just like to know what temperature is needed to create a barely
visible, dull red glow.

So far, I reckon it is a bit less than 370 C.

Any takers?

..... Phil

Only if the magnetic switch gets stuck. But then you don't need the dark to see
it glowing:)
Click to expand...
Well, Phil's question is actually an interesting one, although not
strictly an electronics question. He is basically asking about
relationship between temperature and electromagnetic radiation. A
'black body' at a certain temperature will emit electromagnetic
radiation with a particular centre frequency (and weaker emissions on
either side of this center frequency).

How does an incandescent light work? By heating a thin tungsten wire
(with a very high melting point) by electrical resistance. The colour
of the incandescent light is related to the temperature the filament
reaches (hence the term for those familiar with it, the colouir
temperature). Have a look at wikipedia or this link (there are many
others):

http://www.mediacollege.com/lighting/colour/colour-temperature.html

To cut a long and complex story short, the cooler the body, the lower
the frequency of electromagnetic radiation. The red end of visible
light in the electromagnetic spectrum is emitted by a body at about
1000 Kelvin (Celsius + 273 = Kelvin). So a soldering iron at 370
Celsius will be at about 640 Kelvin, not that far below the red end of
the visible electromagnetic spectrum. While the peak emission
frequency of EM radiation will be in the infrared and invsibible to
normal vision, the shoulders of the emission will run, on one side,
towards the red end of the spectrum... so it is quite possible that a
feint red glow might be visible.

BTW, if you are wondering how an IR camera or sensor works, it simply
picks up the electromagnetic radiation in the invisible infrared that
comes from an object due to its temperature. So there is a bit of an
electronics link in spite of what I said.

Cheers
Glenn
 
TonyS wrote:
Phil Allison wrote:
** Hi to all,

" Does your chewing gum loose its flavour on the bed post overnight
" was THE burning question on everyone's mind back in the 1959 -
courtesy of one Lonnie Donegan. Yep - I am old just enough the
remember hearing it on AM radio.

But my question IS can YOU see any red glow from a typical
soldering iron - in the dark of course. You will need to try this
out, in a dark room, at night - after allowing a few minutes for
your eyes to adjust to the very low light level.

Would just like to know what temperature is needed to create a barely
visible, dull red glow.

So far, I reckon it is a bit less than 370 C.

Any takers?




..... Phil





Only if the magnetic switch gets stuck. But then you don't need the dark
to see it glowing:)
Click to expand...
Actually, I tried again in absolute darkness (Had to tape off the ON lamp) and
found that shortly before the magnet switches off I see a dim glow.
Weller Magnastat 60W with tip No.7 PT-AA(supposedly switch temperature 370 deg)
:)
 
"TonyS"

Actually, I tried again in absolute darkness (Had to tape off the ON lamp)
and found that shortly before the magnet switches off I see a dim glow.
Weller Magnastat 60W with tip No.7 PT-AA(supposedly switch temperature 370
deg)
:)
Click to expand...


** OK - thanks for the info.

370C is indeed visible.



..... Phil
 
On Tue, 06 May 2008 19:39:52 +1000, Phil Allison wrote:

** Ya flick the damn switch - wanker.
Click to expand...
The guy politely replies to your stupid post, and so you abuse him.

Weird.

Dan
 
"Dan Nutter"


** Ya flick the damn switch - wanker.

The guy politely replies to your stupid post,
Click to expand...

** My post was far from stupid.

The reply from Glenn was a vacuous troll.


and so you abuse him.
Click to expand...

** I corrected him - with flair.


Now, piss off - you fucking MORON.



...... Phil
 
On Wed, 07 May 2008 11:43:27 +1000, Phil Allison wrote:

Now, piss off - you fucking MORON.
Click to expand...
Wow, I guess that kind of language must make you feel really superior.

Dan
 
On Tue, 6 May 2008 22:32:34 +1000, "Phil Allison"
<philallison@tpg.com.au> wrote:

"TonyS"

Actually, I tried again in absolute darkness (Had to tape off the ON lamp)
and found that shortly before the magnet switches off I see a dim glow.
Weller Magnastat 60W with tip No.7 PT-AA(supposedly switch temperature 370
deg)
:)



** OK - thanks for the info.

370C is indeed visible.



.... Phil
Click to expand...
I just tried it on my hakko 700, soldering iron side, not desolderer.
Started off at 360C on the dial and let my eyes adjust to the dark.
Slowly cranked it up over 10 minutes to the max (480C on the dial) and
still could not see anything. Its possible that the dial on my iron is
wrong.
 
"The Real Andy"
"Phil Allison"
"TonyS"

Actually, I tried again in absolute darkness (Had to tape off the ON
lamp)
and found that shortly before the magnet switches off I see a dim glow.
Weller Magnastat 60W with tip No.7 PT-AA(supposedly switch temperature
370
deg)
:)

** OK - thanks for the info.

370C is indeed visible.

I just tried it on my hakko 700, soldering iron side, not desolderer.
Started off at 360C on the dial and let my eyes adjust to the dark.
Slowly cranked it up over 10 minutes to the max (480C on the dial) and
still could not see anything. Its possible that the dial on my iron is
wrong.
Click to expand...

** There is another explanation .....



..... Phil
 
"Dan N" <dan@localhost.net> wrote in message
news:48215db0$0$31643$5a62ac22@per-qv1-newsreader-01.iinet.net.au...
On Wed, 07 May 2008 11:43:27 +1000, Phil Allison wrote:


Now, piss off - you f****ing MORON.

Wow, I guess that kind of language must make you feel really superior.

Dan
Click to expand...
Yeah it does. You know Philthy here was a university drop out that could
have been a Nobel Laureate! He's smart, really smart, just ask him.

Cheers TT
 
On May 7, 8:33 pm, "Phil Allison" <philalli...@tpg.com.au> wrote:
"The Real Andy"
"Phil Allison"



"TonyS"

Actually, I tried again in absolute darkness (Had to tape off the ON
lamp)
and found that shortly before the magnet switches off I see a dim glow.
Weller Magnastat 60W with tip No.7 PT-AA(supposedly switch temperature
370
deg)
:)

** OK - thanks for the info.

370C is indeed visible.

I just tried it on my hakko 700, soldering iron side, not desolderer.
Started off at 360C on the dial and let my eyes adjust to the dark.
Slowly cranked it up over 10 minutes to the max (480C on the dial) and
still could not see anything. Its possible that the dial on my iron is
wrong.

** There is another explanation .....

..... Phil
Click to expand...
Tried it on my ERSA RDS 80 soldering station, started at 400c (on the
display) and even in total darkness couldn't see any glow. Cranked it
up using the "+" button until the display indicated "450" (as far as
it would go).

(I have my doubts as to whether it actually went to 450, seemed to get
there too quickly from 400, and the power bar graph display sat at a
low level throughout the "heating" process - usually it tops out.)

There was still no visible glow, even after a few minutes of "full
power" and complete darkness.


Not wanting to admit defeat,

I pulled out the trusty old Scope iron (the 3.3v one with the carbon
element, and the black bakelite body with the spring loaded ring you
pushed forward to turn on the iron) that I hadnt used in probably 15+
years - and fired it up. Less than 2 minutes of being held on the
end was glowing red, even in room light it was visible. No temp gauge
though on such a beast, and have nothing here that could measure a
temperature that high, so I cant say what temperature it was at.

Got to admit though, you cant beat it for fast heat-up time from
cold :)
 
"TT" <TTencerNoSpAm@westnet.com.au> wrote in message
news:uLudne0HKfqgFrzVnZ2dnUVZ_rninZ2d@westnet.com.au...
"Dan N" <dan@localhost.net> wrote in message
news:48215db0$0$31643$5a62ac22@per-qv1-newsreader-01.iinet.net.au...
On Wed, 07 May 2008 11:43:27 +1000, Phil Allison wrote:


Now, piss off - you f****ing MORON.

Wow, I guess that kind of language must make you feel really superior.

Dan

Yeah it does. You know Philthy here was a university drop out that could
have been a Nobel Laureate! He's smart, really smart, just ask him.

Cheers TT
Click to expand...
At least pretty smart for someone who was raised by dingoes.
 
"ian field" <dai.ode@ntlworld.com> wrote in message
news:6hjUj.122423$4f4.73067@newsfe6-win.ntli.net...
:
: "TT" <TTencerNoSpAm@westnet.com.au> wrote in message
: news:uLudne0HKfqgFrzVnZ2dnUVZ_rninZ2d@westnet.com.au...
: >
: > "Dan N" <dan@localhost.net> wrote in message
: >
news:48215db0$0$31643$5a62ac22@per-qv1-newsreader-01.iinet.net.au...
: >> On Wed, 07 May 2008 11:43:27 +1000, Phil Allison wrote:
: >>
: >>>
: >>> Now, piss off - you f****ing MORON.
: >>
: >> Wow, I guess that kind of language must make you feel
really superior.
: >>
: >> Dan
: >
: > Yeah it does. You know Philthy here was a university
drop out that could
: > have been a Nobel Laureate! He's smart, really smart,
just ask him.
: >
: > Cheers TT
: >
:
: At least pretty smart for someone who was raised by
dingoes.
:
I didn't know they had Dingoes in Tasmania.
 
"Phil Allison" <philallison@tpg.com.au> wrote in message
news:688g3gF2rrfhcU1@mid.individual.net...
** Hi to all,

" Does your chewing gum loose its flavour on the bed post overnight "
was THE burning question on everyone's mind back in the 1959 -
courtesy
of one Lonnie Donegan. Yep - I am old just enough the remember hearing
it
on AM radio.

But my question IS can YOU see any red glow from a typical soldering
iron - in the dark of course. You will need to try this out, in a dark
room, at night - after allowing a few minutes for your eyes to adjust to
the very low light level.

Would just like to know what temperature is needed to create a barely
visible, dull red glow.

So far, I reckon it is a bit less than 370 C.

Any takers?
Click to expand...
Quick answer: No. If it is, it's too hot. The only irons that will get to
that sort of heat is the old large Scope iron with the 3.3 volt AC tranny.
Not recommended for cct board work.

Jason
 
"Jason James"

But my question IS can YOU see any red glow from a typical soldering
iron - in the dark of course. You will need to try this out, in a dark
room, at night - after allowing a few minutes for your eyes to adjust
to
the very low light level.

Would just like to know what temperature is needed to create a barely
visible, dull red glow.

So far, I reckon it is a bit less than 370 C.

Any takers?

Quick answer: No. If it is, it's too hot.
Click to expand...

** 370C is the standard temp for a soldering iron - idiot.


The only irons that will get to
that sort of heat is the old large Scope iron with the 3.3 volt AC tranny.
Click to expand...

** You have not bothered to read the question.

Piss head.



...... Phil
 
"Phil Allison" <philallison@tpg.com.au> wrote in message
news:688g3gF2rrfhcU1@mid.individual.net...
** Hi to all,

" Does your chewing gum loose its flavour on the bed post overnight " was
THE burning question on everyone's mind back in the 1959 - courtesy of
one Lonnie Donegan. Yep - I am old just enough the remember hearing it
on AM radio.

But my question IS can YOU see any red glow from a typical soldering
iron - in the dark of course. You will need to try this out, in a dark
room, at night - after allowing a few minutes for your eyes to adjust to
the very low light level.

Would just like to know what temperature is needed to create a barely
visible, dull red glow.
Click to expand...
This will only work if you have a shitty soldering iron. Iron or steel needs
to get to about 480 degrees for it to glow red. If you have a shitty iron
that is 480 degrees at the top and 300 at your temp censor you can probably
do it. But I seem to remember you would need 400W to get the metal hot
enough.
 
On Wed, 7 May 2008 20:33:44 +1000, "Phil Allison"
<philallison@tpg.com.au> wrote:

"The Real Andy"
"Phil Allison"
"TonyS"

Actually, I tried again in absolute darkness (Had to tape off the ON
lamp)
and found that shortly before the magnet switches off I see a dim glow.
Weller Magnastat 60W with tip No.7 PT-AA(supposedly switch temperature
370
deg)
:)

** OK - thanks for the info.

370C is indeed visible.

I just tried it on my hakko 700, soldering iron side, not desolderer.
Started off at 360C on the dial and let my eyes adjust to the dark.
Slowly cranked it up over 10 minutes to the max (480C on the dial) and
still could not see anything. Its possible that the dial on my iron is
wrong.


** There is another explanation .....
Click to expand...
My eyes cannot see IR like yours? I can often see a glow from IR
remotes in the dark, but i suspect that this is more visible light
that I can see.


..... Phil
Click to expand...
 
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