Reviewing a cheap CRT degaussing wand...

[whit3rd]

On Tuesday, January 12, 2021 at 10:47:08 PM UTC-8, John Robertson wrote:

On 2021/01/12 4:56 p.m., Rayner Lucas wrote:
In article <MPG.3a67ec6b3...@news.east.earthlink.net>,
rmower...@earthlink.net says...

In article <fpmdnckH4tWUgWPC...@giganews.com>,

I use a large Weller Soldering Gun when I can\'t find one of the
degaussing coils in the shop...

You need something that puts out a large AC field - like the unshielded
transformer used in soldering guns.

Some soldering guns use a hairpin winding on a toroid core; those do NOT give
external field, they\'re self-shieding, but a 5\" diameter simple wire loop connected instead of the
short tip will do a degaussing task adequately.

 

[Phil Allison]

whit3rd wrote:

==============

Some soldering guns use a hairpin winding on a toroid core; those do NOT give
external field, they\'re self-shieding, but a 5\" diameter simple wire loop connected instead of the
short tip will do a degaussing task adequately.

** I have read that a magnet attached to the chuck of a power drill, running at high speed, can also be used to demag a TV tube.

Never tried it - seems a bit dodgy.



....... Phil

 

[Rob]

Rayner Lucas <usenet202101@magic-cookie.co.ukNOSPAMPLEASE> wrote:

Hi all. This post is a review of the cheap \"green stick\" CRT degaussing
wands, as I haven\'t found much discussion of them and some other
repairers of vintage monitors may find it useful.

CRT degaussing tools seem to be hard to find these days.

Small wonder, as hardly anyone uses a CRT these days...
Normally when a CRT TV needs some form of repair, it will join its
fellows in the recycling bin.

 

[ohg...@gmail.com]

On Sunday, January 17, 2021 at 12:34:53 AM UTC-5, palli...@gmail.com wrote:

whit3rd wrote:

==============

Some soldering guns use a hairpin winding on a toroid core; those do NOT give
external field, they\'re self-shieding, but a 5\" diameter simple wire loop connected instead of the
short tip will do a degaussing task adequately.

** I have read that a magnet attached to the chuck of a power drill, running at high speed, can also be used to demag a TV tube.

Never tried it - seems a bit dodgy.

I can envision some Einstein attaching a magnet to a drill with cellophane tape, and watching in stunned horror as the magnet flies off and smashes the glass top coffee table..

 

[ohg...@gmail.com]

On Sunday, January 17, 2021 at 12:34:53 AM UTC-5, palli...@gmail.com wrote:

whit3rd wrote:

==============

Some soldering guns use a hairpin winding on a toroid core; those do NOT give
external field, they\'re self-shieding, but a 5\" diameter simple wire loop connected instead of the
short tip will do a degaussing task adequately.

** I have read that a magnet attached to the chuck of a power drill, running at high speed, can also be used to demag a TV tube.

Never tried it - seems a bit dodgy.

I can envision some Einstein attaching a magnet to a drill with cellophane tape, and watching in stunned horror as the magnet flies off and smashes the glass top coffee table..

 

[John Robertson]

On 2021/01/17 2:02 p.m., ohg...@gmail.com wrote:

On Sunday, January 17, 2021 at 12:34:53 AM UTC-5, palli...@gmail.com wrote:
whit3rd wrote:

==============

Some soldering guns use a hairpin winding on a toroid core; those do NOT give
external field, they\'re self-shieding, but a 5\" diameter simple wire loop connected instead of the
short tip will do a degaussing task adequately.

** I have read that a magnet attached to the chuck of a power drill, running at high speed, can also be used to demag a TV tube.

Never tried it - seems a bit dodgy.

You think? Seems an understatement for you, Phil...

I can envision some Einstein attaching a magnet to a drill with cellophane tape, and watching in stunned horror as the magnet flies off and smashes the glass top coffee table..

Or explodes the picture tube!

John :-#(#

--
(Please post followups or tech inquiries to the USENET newsgroup)
John\'s Jukes Ltd.
MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
(604)872-5757 (Pinballs, Jukes, Video Games)
www.flippers.com
\"Old pinballers never die, they just flip out.\"

 

[John Robertson]

On 2021/01/17 2:02 p.m., ohg...@gmail.com wrote:

On Sunday, January 17, 2021 at 12:34:53 AM UTC-5, palli...@gmail.com wrote:
whit3rd wrote:

==============

Some soldering guns use a hairpin winding on a toroid core; those do NOT give
external field, they\'re self-shieding, but a 5\" diameter simple wire loop connected instead of the
short tip will do a degaussing task adequately.

** I have read that a magnet attached to the chuck of a power drill, running at high speed, can also be used to demag a TV tube.

Never tried it - seems a bit dodgy.

You think? Seems an understatement for you, Phil...

I can envision some Einstein attaching a magnet to a drill with cellophane tape, and watching in stunned horror as the magnet flies off and smashes the glass top coffee table..

Or explodes the picture tube!

John :-#(#

--
(Please post followups or tech inquiries to the USENET newsgroup)
John\'s Jukes Ltd.
MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
(604)872-5757 (Pinballs, Jukes, Video Games)
www.flippers.com
\"Old pinballers never die, they just flip out.\"

 

[Mike Coon]

In article <DKydnb5sGf25T5n9nZ2dnUU7-IWdnZ2d@giganews.com>,
spam@flippers.com says...

On 2021/01/17 2:02 p.m., ohg...@gmail.com wrote:
On Sunday, January 17, 2021 at 12:34:53 AM UTC-5, palli...@gmail.com wrote:
whit3rd wrote:
I can envision some Einstein attaching a magnet to a drill with

cellophane tape, and watching in stunned horror as the magnet flies off
and smashes the glass top coffee table..

Or explodes the picture tube!

John :-#(#

I used to walk to school (in the 1950s) beside a canal in Bristol (UK).
There was a girder footbridge over this canal, and small kids had
somehow acquired duff CRTs and would carry them half across this bridge
in order to watch them smash into the water. Happy to say I never
actually saw a child burst one on the girders...

 

[Phil Allison]

Mike Coon wrote:
=============

Or explodes the picture tube!


There was a girder footbridge over this canal, and small kids had
somehow acquired duff CRTs and would carry them half across this bridge
in order to watch them smash into the water.

-------------------------------

** One saw a pic of a B&W picture tube that had imploded.
The electron gun had been propelled though the screen and imbeded itself in the back of a lounge chair.

There is almost 20,000lbs of pressure on the out side of a 23inch one..

....... Phil

 

[Phil Allison]

Mike Coon wrote:
=============

Or explodes the picture tube!


There was a girder footbridge over this canal, and small kids had
somehow acquired duff CRTs and would carry them half across this bridge
in order to watch them smash into the water.

-------------------------------

** One saw a pic of a B&W picture tube that had imploded.
The electron gun had been propelled though the screen and imbeded itself in the back of a lounge chair.

There is almost 20,000lbs of pressure on the out side of a 23inch one..

....... Phil

 

[Mike Garcia]

On Tue, 12 Jan 2021 20:48:30 +0000, Rayner Lucas wrote:

> Hi all. This post is a review of the cheap \"green stick\" CRT degaussing

Nice post!
Good to know!


--

Mike Garcia
http://mgarcia.org

 

[Mike Garcia]

On Tue, 12 Jan 2021 20:48:30 +0000, Rayner Lucas wrote:

> Hi all. This post is a review of the cheap \"green stick\" CRT degaussing

Nice post!
Good to know!


--

Mike Garcia
http://mgarcia.org