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Title: Weird--But True...
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BCB
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Registered: 09/24/2003
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(Date Posted:03/14/2005 02:30:01)

I have a garage that is approximately 150 feet from my house.  The electric to that garage is underground from my breaker box in my house, so it is on the same circuits as my house.  On this garage I have a motion sensor light.  In the mornings at about 0430 hours when I go to the basement to let the dog out, I always put a cup of cold coffee in the microwave to heat for a minute.  Then when the dog comes back in and I return upstairs the coffee is hot.  Every morning the motion sensor light is on at the garage when I look out the basement door as the dog goes forth and I see nothing--rabbit, cat, dog, deer, prowler, etc.  The other morning I went through the usual coffee to the microwave routine, BUT I looked out the upstairs window and after about 10 seconds of the microwave running, the motion sensor light came on!!!  So I let the dog out and came back upstairs and tried the microwave again.  Sure enough, after about 10 seconds the motion sensor light comes on!  This happens everytime I run the microwave and it is dark enough to have the motion sensor light come on.  Any thoughts on such an occurrence?  Thanks...BCB

Crazy Mark
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(Date Posted:03/14/2005 06:00:25)

Either a voltage drop enough to reset the light or your microwave is really messed up. I'd think the voltage drop kinda like when the power goes out. They look at infrared to turn off and on and will reset on enough of a voltage drop.
BCB
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(Date Posted:03/14/2005 23:08:29)

Crazy Mark,

Yep, I'll bet you are correct as I think about it now.  I does reset itself during a thunder storm if even the most minimal surge in electricity to the house occurs.  You know, just enough so I have to reset all of the digital clocks, but the electric handstyle clocks don't loose anytime at all. Yet, it sure was strange to finally figure out that the microwave was the culprit!  Thanks...BCB
Linstrum
3# 



Registered:05/13/2004
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(Date Posted:03/16/2005 06:23:22)

Hi, there, BCB,

There are two types of motion detectors, one uses the infrared already mentioned and the other uses extremely low power microwave. The micowave ones are the kind most often used in supermarkets for operating doors, but they are found in better quality home detectors as well.

Take a known 1500 watt load like a hair drier and plug into the same outlet as the microwave and see if it turns the outdoor light on. If not you, have a badly "leaking" microwave oven!

--------------------------------------------------------------
There is no such thing as too many tools! Especially when it comes to casting and reloading. Howard Hughes said: "He who has the tools rules".

Safe casting and shooting!

Linstrum, All Outdoors survivor and Shooters.com alumnus.

starmetal
4# 



Registered:09/21/2003
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(Date Posted:03/16/2005 06:53:07)

Linstrum,

You forgot the third kind of motion detector. It is covered with fur, barks alot, and it poops in your yard...a DOG!!!!

Joe

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VENIT HORA "THE HOUR HAS COME"

Linstrum
5# 



Registered:05/13/2004
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(Date Posted:03/16/2005 09:16:42)

By jove starmetal, you've got it!

Hey, BCB, make real sure the dog isn't sneaking back around when you ain't lookin and turning it on! 

Linstrum,You forgot the third kind of motion detector. It is covered with fur, barks alot, and it poops in your yard...a DOG!!!!Joe

--------------------------------------------------------------
There is no such thing as too many tools! Especially when it comes to casting and reloading. Howard Hughes said: "He who has the tools rules".

Safe casting and shooting!

Linstrum, All Outdoors survivor and Shooters.com alumnus.

BCB
6# 



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Registered:09/24/2003
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(Date Posted:03/16/2005 17:58:02)


Ahhhhhhhhh, come on guys, give me a break!!!  The light comes on before I let the mutt out!!!  But, could it be a consperacy, in that my dog has a dog friend who trips the light activater as I put my cup of cold coffee in the microwave?  I actually believing it is the voltage surge or stray microwaves.  Now then, will I get cooked from the stray waves?  Thanks again...BCB
wills
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(Date Posted:03/16/2005 18:47:44)

Perhaps the dog is using the hair dryer.

--------------------------------------------------------------
A haw, haw, haw, haw, a haw.
A haw, haw, haw.

BCB
8# 



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(Date Posted:03/16/2005 20:59:04)

Now wait a minute...I think it is a conspiracy among some of the posters on this site and my loyal (?) Chocolate Lab to drive my further crazy than what I have been accused of being.  I will solve this problem, yes sir I will, and shoot the light out with cast boolits, of course...BCB
NotRicochet
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Registered:10/07/2003
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(Date Posted:03/18/2005 01:57:01)

Pretty unlikely that you're getting enough stray microwave leakage to trigger the sensor. You'd need big visible holes in the metal shielding to let much out. It's the power surge that starts a few seconds after turnon, when the cathode of the magnetron has warmed up. 10 seconds sounds about right. I run a microwave at engine shows with "Dolly," my Indian-made copy of a Lister Diesel. (I pop popcorn and give it away to passersby.) A few seconds after it cuts on, she really starts barking as the generator gets loaded down.

BTW, if you've got lots of stray microwave RF, you'll feel the warmth from it.

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"A cheerful heart is good medicine."

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