Tuesday 19 April 2016

Microwave Magnetron

microwave magnetron 

Do you want to cook a dinner within 5-minutes or you can make an airplane safer to fly in bad weather? For that you need a some microwaves can help, those are the super-energetic, invisible and short wave length radio waves that travel at the speed of light and doing some important stuff in microwave ovens and radar-navigation equipment's. If you have a right equipment like handy gadget called magnetron, make use of magnetron and you can prepare food in microwaves within a 5-minutes.

What is Magnetron and How does it works?

Let's take a closer look! Microwave Oven contains high voltage and it should be handled with extreme care. Magnetron are horribly complicated and it has quite a lot in common with a cathode ray(electron) tube. Magnetron generates radio waves they are usually no shorter than 1mm and no longer than 30cm. 

How does a Magnetron make Microwaves?

Structure of Magnetron

1. There is a heated cathode at the center of magnetron.

2. A ring shaped anode surrounds the cathode.

3. If you switched on a simple magnetron, electrons would boil off from the cathode and zip across to the anode in straight lines.

4. First, Anode has holes or slots cut into it called resonant cavities. Second, To generate a magnetic field along with the length of the tube, magnet is placed underneath the anode.

5. Now when the electrons try to zip from cathode to anode, they travel through an electric field and at the same time magnetic field can also travel, So like that electrically charged particles can be moved to the magnetic field. Instead of straight one, they feel a force and follow a curved path, whizzing around the space between anode and cathode.

6. When electron nip past the cavities, then cavities resonate and emits the microwave radiation.

7. When microwave radiation produces cavities, it collects the kind of funnel called waveguide, either from cooking compartment of a microwave oven. 

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