a picture of a clock and an electronic circuit

(0:00-0:20) Introduction:0:00: "Hello, students! Today we will look at MOSFET transistors."0:05: "This is a key element of modern electronics: from smartphones to electric cars."0:10: "Understanding their operation is important for future engineers."0:15: "Let's look at their structure and principle of operation."(0:20-1:00) MOSFET structure:0:20: "A MOSFET consists of a substrate, source, drain, gate, and oxide layer."0:30: "The voltage on the gate forms a channel between the source and drain."0:40: "The movement of charge carriers creates current."0:45: "There are N-channel and P-channel transistors."0:50: "The difference is in the direction of the current and the charge carriers."(1:00-2:00) Principle of operation:1:00: "The voltage on the gate creates an electric field."1:10: "This field affects the formation of the channel and conductivity."1:20: "Changing the voltage on the gate regulates the current."1:30: "Operating modes: cutoff, active mode, saturation."1:40: "The channel width varies depending on t