ABSTRACT
This chapter describes what a zener diode is, and the differences between a regular diode and a zener diode. It explores the use of a zener diode in a circuit and the use of a zener diode for voltage regulation. The chapter shows how to combine zener diodes and for what purpose. It details a zener diode in a circuit, describes what a diac is and what it is used for, and explains the characteristics of a diac. The chapter also describes the application of a silicon-controlled rectifier (SCR), the difference between a diode and a SCR, and the relationship between diac and triac. It explores the application of a triac and circuit diagrams the professional way. Diac and triac are two devices, usually used together for current control in AC circuits. Triacs are used for clean switching in place of electromechanical switches.
