Chapter 4. Diodes

This chapter focuses on the highlighted blocks in the concept map above.
Key question this chapter helps you answer: How do we model a nonlinear device (a diode) well enough to design safe, working circuits such as LED indicators and rectifiers?
Lab connection: Applied in subsequent labs that use LEDs and diode-like junction behavior; diode thinking (bias, forward drop, current limiting) is essential whenever LEDs appear.
Where this shows up in systems:
- Diodes appear in indicator lights, protection paths, and power/interface circuits.
- Correct modeling prevents common failures (especially excessive forward current in LEDs).