BASIC ELECTRONICS - OD1633 - LESSON 1/TASK 1
Resistance is a property of every electrical component.
effects will be undesirable.
ways. Resistors are components manufactured to possess specific values of
They are manufactured in many types and sizes.
using its schematic representation, a resistor is shown as a series of
jagged lines, as illustrated in figure 8 on the following page.
OHM'S LAW TN DIAGRAM FORM.
a. Composition of Resistors. One of the most common types of resistor
is the molded composition, usually referred to as the carbon resistor.
These resistors are manufactured in a variety of sizes and shapes.
The chemical composition of the resistor determines its resistance and is
accurately controlled by the manufacturer in the development process. They
are made in values that range from one Ohm to millions of Ohms.
physical size of the resistor is related to its wattage rating, which is the
ability of the resistor to dissipate beat caused by the resistance.
Carbon resistors, have as their principal ingredient the element carbon. In
the manufacture of carbon resistors, fillers, or binders are added to the
carbon to obtain various resistor values.
Examples of these fillers are