| Author |
Message |
jason b
Guest
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 Posted:
Mon Feb 21, 2005 5:22 am Post subject:
Strange Problem With Monitor being around Microwave.. |
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Does anyone know what would cause this to happen :
In my apt, I've got my monitor set up so that it's in my living
room, theres a 'window' to the kitchen where I have my Microwave. They
are around 5' apart. When I turn my microwave on I get a noticable
shaking on my screen. It only has happpened with my new monitor ( Dell -
Sony Trinitron 19" model M991). Do I have anything to worry about as far
as ruining the display ?
tia ,
jason bean
--
((¯`'·.¸(¯`'·.((¯`'·.¸ * jason bean* ¸.·'´¯))¸.·'´¯)¸.·'´¯))
For me , said Sherlock Holmes, "there still remains the cocaine bottle,"
and he reached his hand up for it.
http://home.cogeco.ca/~jabean
http://musicpage.kicks-ass.org/
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Rubbishrat
Guest
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| Posted:
Mon Feb 21, 2005 5:53 am Post subject:
Re: Strange Problem With Monitor being around Microwave.. |
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"Jamie" <jamie_5_not_valid_after_5_Please@charter.net> wrote in message
news:ik9Sd.8528$k74.2557@fe03.lga...
| Quote: | jason b wrote:
Does anyone know what would cause this to happen :
In my apt, I've got my monitor set up so that it's in my living room,
theres a 'window' to the kitchen where I have my Microwave. They are
around 5' apart. When I turn my microwave on I get a noticable shaking on
my screen. It only has happpened with my new monitor ( Dell - Sony
Trinitron 19" model M991). Do I have anything to worry about as far as
ruining the display ?
tia ,
jason bean
|
There's no real danger of doing any permanent damage to the screen, when you
move the monitor away from the powerful alternating magnetic field the
shaking should stop. Its just pulling the beams about inside the CRT. The
field is of course spherical in shape and its strength decreases in
proportion to the inverse of the square of the distance from the oven so
just another foot or so might be enough to stop the shivers. Try it!
Pete |
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Sam Goldwasser
Guest
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| Posted:
Mon Feb 21, 2005 6:10 am Post subject:
Re: Strange Problem With Monitor being around Microwave.. |
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Jamie <jamie_5_not_valid_after_5_Please@charter.net> writes:
| Quote: | jason b wrote:
Does anyone know what would cause this to happen :
In my apt, I've got my monitor set up so that it's in my living
room, theres a 'window' to the kitchen where I have my
Microwave. They are around 5' apart. When I turn my microwave on I
get a noticable shaking on my screen. It only has happpened with my
new monitor ( Dell - Sony Trinitron 19" model M991). Do I have
anything to worry about as far as ruining the display ?
tia ,
jason bean
its most likely a voltage drop problem and i don't think its a good
idea to operate your monitor that way. many things in your monitor are
designed to operate at the correct voltage other wise, you may get
area's in the monitor that will actually run hotter than it should due
to improper voltages causing circuits to go off the lim..
i would sugguest getting a UPS for your computer and Monitor.
|
More likely a magnetic interference problem from the large power transformer
in the microwave.
It isn't harmful except to your sanity. :)
--- sam | Sci.Electronics.Repair FAQ Mirror: http://repairfaq.ece.drexel.edu/
Repair | Main Table of Contents: http://repairfaq.ece.drexel.edu/REPAIR/
+Lasers | Sam's Laser FAQ: http://repairfaq.ece.drexel.edu/sam/lasersam.htm
| Mirror Sites: http://repairfaq.ece.drexel.edu/REPAIR/F_mirror.html
Note: These links are hopefully temporary until we can sort out the excessive
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Important: Anything sent to the email address in the message header above is
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Jamie
Guest
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| Posted:
Mon Feb 21, 2005 6:10 am Post subject:
Re: Strange Problem With Monitor being around Microwave.. |
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Jerry G. wrote:
| Quote: | If the supply voltage was reduced to a CRT type monitor, the image size
would start to decrease, and the picture may have some blooming with the
increase of brightness. What is being described here, is the common effect
of a strong magnetic field to the mask and the deflection system of a CRT.
to put an example as to why i say voltage drop is from experience. |
i am not saying that is the problem how ever, i have had monitors and
Tv's produce that same effect due to the unit on the same line that
wasn't able to maintain the voltage to a minimum required level for the
regulator and thus caused strange bending and waving effects in the
image.
if this is the case, in some designs these effects are not healthy.
that is all i have to say about that one. i just find it hard to
believe that 5 feet of space is generating that kind of field, i think
i would have second thoughts about where i would be sitting on a
regular bases when the nuker was running. |
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Jerry G.
Guest
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| Posted:
Mon Feb 21, 2005 6:10 am Post subject:
Re: Strange Problem With Monitor being around Microwave.. |
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If the supply voltage was reduced to a CRT type monitor, the image size
would start to decrease, and the picture may have some blooming with the
increase of brightness. What is being described here, is the common effect
of a strong magnetic field to the mask and the deflection system of a CRT.
--
Jerry G.
======
"Jamie" <jamie_5_not_valid_after_5_Please@charter.net> wrote in message
news:ik9Sd.8528$k74.2557@fe03.lga...
jason b wrote:
| Quote: | Does anyone know what would cause this to happen :
In my apt, I've got my monitor set up so that it's in my living room,
theres a 'window' to the kitchen where I have my Microwave. They are
around 5' apart. When I turn my microwave on I get a noticable shaking
on my screen. It only has happpened with my new monitor ( Dell - Sony
Trinitron 19" model M991). Do I have anything to worry about as far as
ruining the display ?
tia ,
jason bean
its most likely a voltage drop problem and i don't think its a good |
idea to operate your monitor that way. many things in your monitor are
designed to operate at the correct voltage other wise, you may get
area's in the monitor that will actually run hotter than it should due
to improper voltages causing circuits to go off the lim..
i would sugguest getting a UPS for your computer and Monitor. |
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Jerry G.
Guest
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| Posted:
Mon Feb 21, 2005 6:10 am Post subject:
Re: Strange Problem With Monitor being around Microwave.. |
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The magnetic field from the microwave, and possibly to a smaller degree, the
electrical wiring near the microwave that is supplying it, is creating a
magnetic field that the particular monitor is sensitive to. This will not
have a permanent effect on the monitor, but would be annoying to someone
like me.
If you move them a few more feet apart, you will see the effect decrease.
If you were to have an LCD type screen, there would be no effect from
magnetic fields, unless they were excessively strong.
--
Jerry G.
======
"jason b" <electric_chaos.deletemeplease@cogeco.ca> wrote in message
news:zX8Sd.6258$RM2.5250@read1.cgocable.net...
Does anyone know what would cause this to happen :
In my apt, I've got my monitor set up so that it's in my living
room, theres a 'window' to the kitchen where I have my Microwave. They
are around 5' apart. When I turn my microwave on I get a noticable
shaking on my screen. It only has happpened with my new monitor ( Dell -
Sony Trinitron 19" model M991). Do I have anything to worry about as far
as ruining the display ?
tia ,
jason bean
--
((¯`'·.¸(¯`'·.((¯`'·.¸ * jason bean* ¸.·'´¯))¸.·'´¯)¸.·'´¯))
For me , said Sherlock Holmes, "there still remains the cocaine bottle,"
and he reached his hand up for it.
http://home.cogeco.ca/~jabean
http://musicpage.kicks-ass.org/ |
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Jamie
Guest
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| Posted:
Mon Feb 21, 2005 6:10 am Post subject:
Re: Strange Problem With Monitor being around Microwave.. |
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Rubbishrat wrote:
| Quote: | "Jamie" <jamie_5_not_valid_after_5_Please@charter.net> wrote in message
news:ik9Sd.8528$k74.2557@fe03.lga...
jason b wrote:
Does anyone know what would cause this to happen :
In my apt, I've got my monitor set up so that it's in my living room,
theres a 'window' to the kitchen where I have my Microwave. They are
around 5' apart. When I turn my microwave on I get a noticable shaking on
my screen. It only has happpened with my new monitor ( Dell - Sony
Trinitron 19" model M991). Do I have anything to worry about as far as
ruining the display ?
tia ,
jason bean
There's no real danger of doing any permanent damage to the screen, when you
move the monitor away from the powerful alternating magnetic field the
shaking should stop. Its just pulling the beams about inside the CRT. The
field is of course spherical in shape and its strength decreases in
proportion to the inverse of the square of the distance from the oven so
just another foot or so might be enough to stop the shivers. Try it!
Pete
5 feet away? |
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Ol' Duffer
Guest
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| Posted:
Mon Feb 21, 2005 6:10 am Post subject:
Re: Strange Problem With Monitor being around Microwave.. |
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In article <zX8Sd.6258$RM2.5250@read1.cgocable.net>,
electric_chaos.deletemeplease@cogeco.ca says...
| Quote: | In my apt, I've got my monitor set up so that it's in my living
room, theres a 'window' to the kitchen where I have my Microwave. They
are around 5' apart. When I turn my microwave on I get a noticable
shaking on my screen. It only has happpened with my new monitor ( Dell -
Sony Trinitron 19" model M991). Do I have anything to worry about as far
as ruining the display ?
|
Your microwave generates a strong magnetic field (and to
a lesser degree your house wiring), which can deflect the
monitor's electron beam(s). Some monitors (and microwaves)
are better shielded than others. It won't do permanent
damage, but it can be a nuisance. It may be more or less
noticable on some display modes. |
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Alan S
Guest
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| Posted:
Mon Feb 21, 2005 6:10 am Post subject:
Re: Strange Problem With Monitor being around Microwave.. |
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On Sun, 20 Feb 2005 19:13:15 -0800, Jamie
<jamie_5_not_valid_after_5_Please@charter.net> wrote:
|jason b wrote:
|> Does anyone know what would cause this to happen :
|> In my apt, I've got my monitor set up so that it's in my living room,
|> theres a 'window' to the kitchen where I have my Microwave. They are
|> around 5' apart. When I turn my microwave on I get a noticable shaking
|> on my screen. It only has happpened with my new monitor ( Dell - Sony
|> Trinitron 19" model M991). Do I have anything to worry about as far as
|> ruining the display ?
|>
|> tia ,
|>
|> jason bean
|>
| its most likely a voltage drop problem and i don't think its a good
|idea to operate your monitor that way. many things in your monitor are
|designed to operate at the correct voltage other wise, you may get
|area's in the monitor that will actually run hotter than it should due
|to improper voltages causing circuits to go off the lim..
| i would sugguest getting a UPS for your computer and Monitor.
|
It won't be voltage drop. Just EMI, maybe RFI. Just move them apart a
little more, or don't try to read the computer screen while cooking:-)
I doubt that it's doing any damage; however, the screening on the
microwave is probably not much good. Hopefully nobody wears a
pacemaker in that house.
A new microwave would be far cheaper than an (unnecessary in this
case) UPS.
Cheers, Alan |
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NSM
Guest
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| Posted:
Mon Feb 21, 2005 6:10 am Post subject:
Re: Strange Problem With Monitor being around Microwave.. |
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"jason b" <electric_chaos.deletemeplease@cogeco.ca> wrote in message
news:zX8Sd.6258$RM2.5250@read1.cgocable.net...
| Quote: |
Does anyone know what would cause this to happen :
In my apt, I've got my monitor set up so that it's in my living
room, theres a 'window' to the kitchen where I have my Microwave. They
are around 5' apart. When I turn my microwave on I get a noticable
shaking on my screen. It only has happpened with my new monitor ( Dell -
Sony Trinitron 19" model M991). Do I have anything to worry about as far
as ruining the display ?
|
It's normal. Move them further apart.
N |
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Jamie
Guest
|
| Posted:
Mon Feb 21, 2005 6:10 am Post subject:
Re: Strange Problem With Monitor being around Microwave.. |
|
|
jason b wrote:
| Quote: | Does anyone know what would cause this to happen :
In my apt, I've got my monitor set up so that it's in my living room,
theres a 'window' to the kitchen where I have my Microwave. They are
around 5' apart. When I turn my microwave on I get a noticable shaking
on my screen. It only has happpened with my new monitor ( Dell - Sony
Trinitron 19" model M991). Do I have anything to worry about as far as
ruining the display ?
tia ,
jason bean
its most likely a voltage drop problem and i don't think its a good |
idea to operate your monitor that way. many things in your monitor are
designed to operate at the correct voltage other wise, you may get
area's in the monitor that will actually run hotter than it should due
to improper voltages causing circuits to go off the lim..
i would sugguest getting a UPS for your computer and Monitor. |
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Jim Adney
Guest
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| Posted:
Mon Feb 21, 2005 12:22 pm Post subject:
Re: Strange Problem With Monitor being around Microwave.. |
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On Sun, 20 Feb 2005 19:37:28 -0500 Ol' Duffer <DontSend@MeSpam.net>
wrote:
| Quote: | Your microwave generates a strong magnetic field
|
The only thing in the microwave that would generate a strong AC
magnetic field would be the HV transformer. I've no direct experience
with microwave transformers, but I have a hard time imagining that
they are made so poorly that they have significant fringing magnetic
field that far away.
Are they really this poor?
Or is it more likely to be power line interference?
-
-----------------------------------------------
Jim Adney jadney@vwtype3.org
Madison, WI 53711 USA
----------------------------------------------- |
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NSM
Guest
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| Posted:
Mon Feb 21, 2005 1:04 pm Post subject:
Re: Strange Problem With Monitor being around Microwave.. |
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|
"Jim Adney" <jadney@vwtype3.org> wrote in message
news:a3vi11td7k5p7gom28jfb7ei8fspj9iavg@4ax.com...
| Quote: | Or is it more likely to be power line interference?
|
But from where? The rectifier?
N |
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Tomi Holger Engdahl
Guest
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| Posted:
Mon Feb 21, 2005 4:34 pm Post subject:
Re: Strange Problem With Monitor being around Microwave.. |
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jason b <electric_chaos.deletemeplease@cogeco.ca> writes:
| Quote: | Does anyone know what would cause this to happen :
In my apt, I've got my monitor set up so that it's in my living
room, theres a 'window' to the kitchen where I have my Microwave. They
are around 5' apart. When I turn my microwave on I get a noticable
shaking on my screen. It only has happpened with my new monitor ( Dell
-
Sony Trinitron 19" model M991). Do I have anything to worry about as
far as ruining the display ?
|
The shaking on the screen could be either caused by the magnetic field
caused by the microwave oven (they have large transformers in them) or
because of the effect that microwave oven causes to your electrical
distribution (microwave oven takes lots of power, can cause noticeable
voltage drop on poor wiring etc..). Then there is possiblity of some
RFI getting to monitor because of some microwave leakage in your microwave
oven...
I don't think you need to worry bout ruining your display much...
--
Tomi Engdahl (http://www.iki.fi/then/)
Take a look at my electronics web links and documents at
http://www.epanorama.net/ |
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jason b
Guest
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| Posted:
Mon Feb 21, 2005 6:16 pm Post subject:
Re: Strange Problem With Monitor being around Microwave.. |
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Alan S wrote:
| Quote: | On Sun, 20 Feb 2005 19:13:15 -0800, Jamie
jamie_5_not_valid_after_5_Please@charter.net> wrote:
|jason b wrote:
|> Does anyone know what would cause this to happen :
|> In my apt, I've got my monitor set up so that it's in my living room,
|> theres a 'window' to the kitchen where I have my Microwave. They are
|> around 5' apart. When I turn my microwave on I get a noticable shaking
|> on my screen. It only has happpened with my new monitor ( Dell - Sony
|> Trinitron 19" model M991). Do I have anything to worry about as far as
|> ruining the display ?
|
|> tia ,
|
|> jason bean
|
| its most likely a voltage drop problem and i don't think its a good
|idea to operate your monitor that way. many things in your monitor are
|designed to operate at the correct voltage other wise, you may get
|area's in the monitor that will actually run hotter than it should due
|to improper voltages causing circuits to go off the lim..
| i would sugguest getting a UPS for your computer and Monitor.
|
It won't be voltage drop. Just EMI, maybe RFI. Just move them apart a
little more, or don't try to read the computer screen while cooking:-)
I doubt that it's doing any damage; however, the screening on the
microwave is probably not much good. Hopefully nobody wears a
pacemaker in that house.
A new microwave would be far cheaper than an (unnecessary in this
case) UPS.
Cheers, Alan
It's a small micorwave. Panasonic I think. Sooner or later it'll get |
replaced.
jason
--
((¯`'·.¸(¯`'·.((¯`'·.¸ * jason bean* ¸.·'´¯))¸.·'´¯)¸.·'´¯))
For me , said Sherlock Holmes, "there still remains the cocaine bottle,"
and he reached his hand up for it.
http://home.cogeco.ca/~jabean
http://musicpage.kicks-ass.org/ |
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