TABLE OF CONTENTS Resistors, capacitors, and transistors are a few basic components that can be seen in most electronic circuits. Resistors come in different values. Their resistance can be determined by considering the color codes on it. Different components are represented by different symbols. These components having symbolic names like a resistor, is represented by R, whereas a capacitor is represented by C.
Resistors are one of the most commonly used components in electronics. As its name implies, resistors resist the flow of electrons. They are used to add resistance to a circuit. The color bands around the resistors are color codes that tell you its resistance value. Recall that a unit of resistance is an ohm.
One last important note about resistors is their wattage rating. You should not use a 1/4-watt resistor in a circuit that has more than 1/4 watt of power flowing.
For example, it is not okay to use a 1/4-watt resistor in a 1/2-watt circuit. However, it is okay to use a 1/2-watt resistor in a 1/4-watt circuit.
The tolerance band indicates the accuracy of the values. A 5% tolerance (gold band) for example, indicates that the resistor will be within 5% of its value. For most applications, a resistor within 5% tolerance should be sufficient.
To get the...
