The triode is a flow control device, and the MOS tube is a voltage control device. There are similarities between the two. Triode machine may be used frequently, but you may use MOS tube less. For the MOS tube first throw a few questions:
How to distinguish P-MOS and N-MOS;
How to distinguish the G, D and S pins of MOS;
What is the direction of the parasitic diode of the MOS tube;
How to turn on the MOS tube;
With these few questions, and then read the following content, you will understand faster and more.
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