ELECTRONIC PRINCIPLES - OD1647 - LESSON 1/TASK 2
LESSON 1
ELECTRONIC PRINCIPLES
TASK 2. Describe basic fundamentals of semiconductors,
including PNP and NPN transistors.
CONDITIONS
Within a self study environment and given the subcourse text,
without assistance.
STANDARDS
Within one hour
REFERENCES
No supplementary references are needed for this
task.
1. Introduction
Task one of this subcourse dealt with magnetism, analysis of
inductive and capacitive circuits, and the production of
alternating current. Task two will deal with semiconductor
devices, including PNP and NPN transistors.
2. SolidState Devices
Semiconductors have electrical properties somewhere between
those of insulators and conductors. The use of semiconductor
materials is not new; some devices are as old as the electron
tube. Two of the most widely known semiconductors in use today
are the JUNCTION DIODE and TRANSISTOR. These semiconductors
fall under a more general heading called solidstate devices. A
SOLIDSTATE DEVICE is nothing more than an electronic device
which operates by virtue of the movement of electrons with in a
solid piece of semiconductor material.
103
Previous Page
