These correlations beg the question: What is frequency? Frequency simply tells us how rapidly something is moving out or oscillating. In layman language you can say frequency is the number of times a thing takes place in just one second. For instance, if a light flickers 60 times per second then we say that the frequency of this is equal to 60 Hz. That is a light bulb turning on and off sixty time per second!
Now, let me do a brief explanation on why the 400Hz frequency is important to airplanes. The special frequency also helps to shrink and lighten the electronic devices in airplanes. Smaller and lighter black boxes can slip into the plane. This is super useful because it will allow additional devices to be on simultaneously, while not using a whole lot of power. This means having things like air conditioning and entertainment systems available to use when you are on an airplane, yet without the requirement of overloading a planes electrical system.
Distribution=> This term means- how we transmit the electricity from production source to consumption area. Electricity has operated at 50-60Hz for so many years. Interestingly now with the improvements in technology, 400Hz is becoming very useful. This higher frequency permits the use of smaller and lighter components for electricity. This means we are being able to use lesser material and hence, need less copper for fabricating these parts. This will not only make things work better, but also helps to save money in the long term.
Each from these industries is using relatively narrow band frequencies, mostly because 400Hz frequency is only optimal for usage when size and weight are of extreme importance. How it is used in some of the fields Here are few examples from different domains
Defense: High-frequency power supply is essential for military devices such as radars, communication tools and missile systems, which find applications in the defence sector. Critical systems can then be kept running with no break, thanks to such a high frequency of 400Hz.
Transportation — trains, ships and buses all require electricity to operate. This is mainly possible because of their high 400Hz frequency on the electrical side (You must be asking, what makes this so helpful? Answer: it reduces weight in terms of its electric component and such vehicles become lighter than usual)
Moreover, as technology advances; smaller and more lightweight electronic devices will have a revelation in the market. Now this is where the 400Hz frequency will come in as a huge help. The use of this frequency should allow devices with electronics to be better performing and smaller as well lighter. This results in the development of electronics and sensors that operate faster, more efficiently consume less power with superior performance as total weight across various industries continue to decrease.
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