This week, I studied the first half of Chapter 3, which mainly discusses electrical principles.
This chapter starts with the most basic and easily understandable component, the resistor, and then introduces commonly used concepts such as voltage and temperature coefficient. It then discusses electromigration, a phenomenon that needs to be avoided in design to prevent chip failure. Noise is a fundamental concept in circuit design, including thermal noise, flicker noise, and shot noise. In a low-pass filter composed of RC, the noise observed at the output is kT/C, which is only related to the size of the capacitor.
Next, starting from Maxwell‘s equations, I discussed components related to electric and magnetic fields: inductors, capacitors, and transformers. Under high-frequency characteristics, conductive metals exhibit skin effect, indicating that increasing the size of the metal does not necessarily enhance its conductivity at high frequencies.
Continuing with the network theory in electricity, I covered fundamental principles such as Kirchhoff’s laws, Thevenin and Norton equivalents, and the superposition principle. Two-port networks and feedback are also discussed; these are the most basic and important electrical principles that need to be mastered to lay a foundation for the next stage of learning.