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How Does a MOSFET Work?

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📱 Unlocking Your Smartphone’s Hidden Secrets 🕵️

Have you ever wondered how the videos on your smartphone load instantly and disappear once you close the app? Well, this article delves into the inner workings of your smartphone’s RAM, which is filled with billions of MOSFET transistors. It’s a fascinating read that reveals how your device manages to handle all the data and processes it needs to run smoothly. So, if you’re curious about the technology behind your smartphone, this article is definitely worth a read!

Demystifying the Basics of MOSFETs 💡

The memory of your smartphone is predominantly comprised of RAM. This RAM contains billions of FGMOS transistors which are a subset of the MOSFET family. They are responsible for enabling fast memory access within your device.

For example, a 16GB RAM module consists of numerous FGMOS transistors, each with its specific function. Acting like tiny switches, these MOSFET transistors control the flow of electricity, making efficient data storage and retrieval possible.

The MOSFET structure is elegantly simple. It has green and pink regions that represent different types of semiconductors. Three visible terminals – source, drain, and gate – work together seamlessly to ensure the smooth and efficient functioning of your smartphone’s memory.

MOSFETs at Work: The Science Behind It All 🔬

To understand the science behind MOSFETs, it is essential to comprehend their two primary operational states – the Cut-Off region and the Saturation region. These states are governed by the voltage applied across the terminals, particularly between the drain and source. Consequently, when this voltage changes, it can either cut off or facilitate the flow of current.

Now, let’s unlock the magic trick! To create a channel within the MOSFET that allows the flow of electrons, it is necessary to apply a voltage between the gate and the substrate. This channel forms a vital bridge between the source and the drain, making data access and storage possible.

To understand the role of MOSFETs in power supplies, audio amplification, microprocessors, and data storage devices, we must dive deeper into each of these applications. For instance, MOSFETs play a crucial role in safeguarding power supplies, amplifying audio signals, and enhancing microprocessors. They are the unsung heroes, contributing immensely to the efficiency and performance of modern technology.

So, the next time you use your smartphone or fire up your computer, take a moment to appreciate the intricate MOSFET transistors working silently behind the scenes. They make your tech experience seamless and efficient, working tirelessly to ensure everything runs smoothly.


✅ How Does a MOSFET Work? – https://youtube.com/shorts/mBalEh5E04k


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00:00 –  @chrvoje_engineering  MOSFET INTRO
00:45 – MOSFET Structure (Typically, the MOSFET is a three-terminal device with gate (G), drain (D), and source (S) terminals.) 01:45 – MOSFET Working principle (The main principle of the MOSFET device is to be able to control the voltage and current flow between the source and drain terminals)
05:05 – MOSFET Applications (Power Supplies, Signal Amplification, Storage Devices, Integrated Circuits…)
05:20 – MOSFET in Power Supplies 06:05 – MOSFET in Signal Amplification 06:40 –  @chrvoje_engineering  MOSFET Conclusion 07:31 – @chrvoje_engineering END


The research for this video took about one week. I found relevant information on the subject mainly on the Internet.
[1] Internet of Things
[2] MOSFET working animation | MOSFET explained | MOSFET transistor animation – https://youtu.be/ItOV1nkTlPU
[3] The MOSFET – https://www.electronicstutorials.ws/transistor/tran_6.html –
[4] How Does a MOSFET Work? – https://youtu.be/rkbjHNEKcRw?si=ra1xZz5JDe5i7-8I
[5] What is a MOSFET : Working and Its Applications – https://www.elprocus.com/mosfet-as-a-switch-circuit-diagram-free-circuits/


The script is made from a reference source by Hrvoje Cocic


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