Questions tagged [magnetron]
A magnetron tube is a metal clad glass tube with a hot cathode in the center which is surrounded by a powerful magnet. It is a low-cost way to generate ~10 GHz microwaves of high intensity but not a stable frequency. It is good for cooking food but no longer used for Radar. The Klystron tube is a much better microwave generator.
29 questions
1 vote
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What's the (seemingly) sinusoidal indentation on a microwave's oven waveguide?
This waveguide has a (my guess) sinusoidal indentation on the face opposite the magnetron's output. It seems to be roughly half a wavelenth in diameter as measured on the surface of the waveguide.
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Microwave magnetron connections reversable F, FA?
The two connections on a microwave magnetron are labeled F (filament) and FA (filament anode), both being either ends of a heated filament powered by a 3V AC supply, and the FA connection being ...
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Testing Industrial Magnetron with Megohm meter?
Magnetrons can have a variety of failure modes, I'm trying to come up with a better test besides applying high voltage in a system and blowing fuses, or blindly swapping it out for a new one when an ...
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1 answer
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Selection of diode and transformer for a 1500 W magnetron [closed]
I have a 1500 W magnetron. What diode and transformer can I use for it?
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2 answers
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Power supply for 9.4 GHz magnetron [closed]
I need a power supplier for a magnetron with following specifications. Can someone help me out with the design? Frequency 9380 to 9440 MHz (Fixed) Output power (Peak) 25 kW Duty cycle / Pulse ...
0 votes
1 answer
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CW magnetron operation [closed]
What limits the duty cycle for turning the magnetron of a microwave oven on? What is the maximum width of the magnetron turning on time in one cycle, if the switching cycle is 30 seconds (on + off). ...
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Heating of water by magnetron
I want to know how to calculate heating effects of magnetron. How much heat will be generated in water by 3kW output 2.45GHz magnetron?
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Could a DIY 1 kW portable version of the military non-lethal microwave beam active denial system (ADS) be made?
How would one create a portable 1 kW microwave emitter that projects out a 95 GHz beam to about 5 - 10 feet? What kind of components would be required? I recently came across this fascinating video ...
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How to generate microwave band frequencies like 85GHz? Is there a DIY device or parts kit to do this? [closed]
Let's say I want to build a device that generates and sends out a microwave of some arbitrary specific frequency to a short distance, say 1 - 2 feet. For example, 95 GHz. Is there a straightforward ...
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What does information on a 2m319J D622 magnetron label imply?
I been looking for a 2m319J D622 magnetron at reasonable $. I see the D622 also D623 and D625 ,, What do the values imply, I've been unable to find any info..
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3 votes
2 answers
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Connecting microwave oven magnetron with coaxial cable (for a simple plasma torch)
I would like to try and build a basic microwave plasma torch using an oven magnetron. I've had experience with S-Band RF back in my physical chemistry days but am not liking the prices for waveguides. ...
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3 votes
1 answer
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What dictates the current drawn by a magnetron's anode?
Typically AFAIK in a magnetron from a commercial microwave oven, the cathode filament is heated by a 3.3V 10A supply, generating a cloud of electrons by thermionic emission. The anode cavity resonator ...
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1 vote
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Is a microwave's cooking cavity of particular dimensions according to the characteristics of the input microwave feed?
i.e. if I were to connect the magnetron inside my microwave to a slightly different steel box (see pic) of a different size and shape (provided the volume inside was roughly similar to the one in my ...
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1 vote
2 answers
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How is the frequency in the label behind microwave ovens determined? How could one measure the frequency?
It is very common online for people on youtube, forums, and other social media to bring up the following fun home experiment to "measure the speed of light" using chocolate and a microwave ...
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2 votes
1 answer
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Understand magnetron monitor circuit
I'm trying to understand the lightbulb monitor section of the following circuit, the 2200 uF cap, zener, choke, and bulb. Everything else is a standard microwave oven circuit. The magnetron will not ...
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