All microwave ovens have a common feature. Established official requirements permit the gap not more than 0.5 mm. The microwave generator is called magnetron and is the main element of device. This energy, when dispersed as molecular vibration in solids and liquids (i.e. Do you have a microwave oven and would like to know how it works? They are fast and efficient. Microwave heating principles [2] where Pav is the average power, ω the frequency of radiation, εo the permittivity of free space, E the electric field strength and E* the conjugate of the electric field strength.This equation shows that greater electric field strengths are required at lower frequencies to obtain the same power In this case, heat is generated inside the food using water molecules. In this case, the energy flux density outside of microwave oven does not exceed the permissible level that is 2.1 mW / cm. Different sources define different frequency ranges as microwaves; the above broad definition includes both UHF and EHF (millimeter wave) bands.A more common definition in radio-frequency engineering is the range … Microwave Flow Sensor Working Principle Microwave Flow Sensor is a Non-contact Flow Sensor which emits the microwaves of 2.4GHz from the tip of its sensor. Accumulating a high-voltage capacitor with a capacitance from 0.8 to 1.2 uF is calculated to operate at a voltage up to 10 kV. As known, the use of microwaves for cooking was invented by Percy Lebaron Spencer in 1945. A conventional oven heats food very slowly from the outside in, but a microwave oven uses tiny, high-powered radio waves to cook food more evenly (loosely speaking, we sometimes say it cooks from the "inside out"—although that isn't quite correct). And we talk about attentions for safe using of microwave oven. The heating food process in a microwave oven differs fundamentally. This article discusses the safety and helpful of microwave cooking, including manufacturers’ recommendations regarding the proper use of microwave ovens, some trends for improving them, etc. But sometimes, we really wonder how does a microwave oven work? Generally speaking the systems of a microwave oven can be divided into two fundamental sections, the control section and the high-voltage section . Microwaves are a form of non-ionizing electromagnetic radiation with a frequency higher than ordinary radio waves but lower than infrared light. Microwave ovens use frequencies in one of the ISM (industrial, scientific, medical) bands, which are reserved for this use, so they don’t interfere with other vital radio services. Abstract – We introduce principles of microwave oven. Working chamber is a hollow rectangular resonator. The electrical outlet is good because I plugged the blender and it works. We use cookies to ensure that we give you the best experience on our website. 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