Taking apart a magnetron from a microwave for the magnets...

http://www.crazyfishfarmer.com
Be aware off disassembling a magnetron! Some types contain beryllium oxide ceramic insulators. Beryllium oxide is very dangerous if inhaled. Lead to berylliosis, an nasty incurable lung condition.

http://en.wikipedia.org/wiki/Arsenic

http://en.wikipedia.org/wiki/Cadmium

modhurin08

There are 2 magnets present (usually samarium cobalt type) to give a uniform B field inside the tube. Without a uniform field from cathode to anode, the electrons won't follow a trajectory that remains inside the resonator cavities, hence giving poor or no microwave output.

And, word to the wise: you can't tell by looking if there's BeO in the ceramic. No magnet is worth a painful death...just buy them for

Taking apart a magnetron from a microwave for the magnets...

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[modhurin08]

There are 2 magnets present (usually samarium cobalt type) to give a uniform B field inside the tube. Without a uniform field from cathode to anode, the electrons won't follow a trajectory that remains inside the resonator cavities, hence giving poor or no microwave output.

And, word to the wise: you can't tell by looking if there's BeO in the ceramic. No magnet is worth a painful death...just buy them for crying out loud. Beryllium is far, far worse than even arsenic or cadmium.

[buildingwindmills]

BeO ?

[JohnATallon]

@buildingwindmills I believe he means Beryllium Oxide. BeO powder is carcinogenic, but it's safe once it has been fired. You're likely to see it as the glass-like insulator on certain parts. Just don't smash them into powder and you'll be fine. In its fired form it's not considered hazardous.

[coilgunman]

poor new magnetron

[Isoprenyl]

@buildingwindmills

BeO = Beryllium oxide...

derp

[demnlordd666]

@JohnATallon no no no no no no. beryllium oxide was used as the base ceramic in tube style amplifiers and radio equipment. even back in the 50's they told you to have an external source of air to cool you equipment and venting outside. this is because when warm they can give off beryllium compounds. and by the way look up berylliosis. can b fatal from the first contact of a few miligrams/kg. first time exposure can = death. check Merk index

[lahnlynn7]

Very Slow-loading video, bogged down with inessential trivia -- not to the point.

[Ikions]

@modhurin08 Hi,

According to this video (/watch?v=N-ogNZ6UPD8) you can tell by looking at the "tube" of the magnetron if it has BeO or not. Please check it.

Thank you

[MrStemkilla]

@TheSaltysack it takes thousands of volts to turn it on.. hardly free at all

[thewii552]

@packrat541 because beryllium is super toxic...

[packrat541]

For all of those terrified of Beryllium oxide there is a natural ocurring mineral called beryl and other minerals that contain beryllium and it is in soil that crops are grown in and no one or nothing is dropping dead from it. Why is it that every time people hear a chemical name for something they automaticly assume everyone is going to drop dead from it???

[97skinnyboyswag]

@buildingwindmills

beryllium oxide



[CsaptukEst]

Hello! Is the magnetron's intact remnant functional as a rectifier tube?

[TheSaltysack]

hmm a magnetron sends a heat wave into foods but can we focus the magnetrons wave into the magnetron and make free energy ...of topic i know but just a thought