Timeline for Can a lower voltage overheat a magnetron?
Current License: CC BY-SA 4.0
23 events
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| May 1 at 17:54 | history | edited | kackle123 | CC BY-SA 4.0 |
Another detail.
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| May 31, 2021 at 16:58 | comment | added | kackle123 | @Peter R. McMahon Regarding the low voltage causing magnetron heating, I unexpectedly found/learned this: ballstateuniversityphysicsnanolab.weebly.com/…; though, this was not my issue, apparently. Regarding my low readings post-repair, I see what you mean. However, the oven has worked perfectly with no smell for 8 months, and as I mentioned, I don't know the accuracy of this 25-year old, analog, HV meter. | |
| May 30, 2021 at 2:28 | comment | added | Peter R. McMahon | @kackle123 dances with Monica I haven't heard anything about low voltage heating a magnetron. They act like a 4kV zener & will not conduct under about 3900V because the magnetic field steers the electrons back towards the cathode. That in itself wouldn't cause heating, but reducing the current, causing the voltage to sit just on the threshold would likely cause a high resistance between the spoked cloud and the anode tips causing some losses and heating of the anode, but that would be offset by the lower power input reducing heat from the normal losses. PS Your voltage readings look way 2 low. | |
| Apr 18, 2021 at 14:04 | history | edited | kackle123 | CC BY-SA 4.0 |
Minor technical correction.
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| Feb 2, 2021 at 16:00 | history | edited | kackle123 | CC BY-SA 4.0 |
added 11 characters in body
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| Dec 10, 2020 at 1:45 | history | edited | kackle123 | CC BY-SA 4.0 |
Added horizontal rule for better formatting.
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| Nov 27, 2020 at 19:00 | history | edited | kackle123 | CC BY-SA 4.0 |
Added final repair solution.
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| Oct 11, 2020 at 1:04 | answer | added | Peter R. McMahon | timeline score: 0 | |
| Oct 6, 2020 at 0:23 | vote | accept | kackle123 | ||
| Sep 27, 2020 at 20:48 | history | edited | kackle123 |
Altered tags.
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| Sep 27, 2020 at 19:03 | comment | added | kackle123 | @pericynthion I don't see anything. And I doubt a bug would make that particular odor; if you've smelled it, you never forget it. | |
| Sep 27, 2020 at 18:13 | comment | added | pericynthion | Are you sure an insect hasn't crawled into the transformer (or somewhere else that gets hot) and died? That can have a similar smell. | |
| Sep 27, 2020 at 15:09 | comment | added | kackle123 | @Bimpelrekkie I understand. I also originally mentioned that I replaced the magnetron and still had the smell. | |
| Sep 27, 2020 at 15:00 | history | tweeted | twitter.com/StackElectronix/status/1310232745566760960 | ||
| Sep 27, 2020 at 12:40 | comment | added | Bimpelrekkie | And that's why it is a comment and not an answer. Without a thorough investigation it is impossible to answer without making assumptions and/or guessing. | |
| Sep 27, 2020 at 12:31 | answer | added | fraxinus | timeline score: 1 | |
| Sep 27, 2020 at 4:40 | history | became hot network question | |||
| Sep 27, 2020 at 2:17 | answer | added | david | timeline score: 4 | |
| Sep 26, 2020 at 23:22 | comment | added | kackle123 | @Bimpelrekkie Thank you, but that doesn't address "smell". | |
| Sep 26, 2020 at 21:02 | answer | added | Moty | timeline score: 4 | |
| Sep 26, 2020 at 20:54 | comment | added | Bimpelrekkie | Do realize that magnetrons deteriorate when used, their output power decreases over lifetime, see: hunker.com/12592740/do-microwave-ovens-lose-power-with-time and: electronics.stackexchange.com/questions/380899/… so if this magnetron already has many hours of operation it might be a good time to just replace it. | |
| Sep 26, 2020 at 20:53 | answer | added | Spehro 'speff' Pefhany | timeline score: 2 | |
| Sep 26, 2020 at 20:40 | history | asked | kackle123 | CC BY-SA 4.0 |