Principles of Electronic Communication
Chapter 2: Principles of electronic communication systems
➢ Key words:
• Electrical and electronics • Wires and cables • Analogue electronics • Digital electronics • Information, message and data • Analogue information • Digital information
2 Introduction to electronic communication systems
2.1 Basic electronic components, symbols and circuits
Components of an electronic ( or electrical) circuit
Any electrical circuit consists if three (3) basic parts
Energy source - converts non-electric energy into energy. Examples are batteries and generators.
Output device - uses electric energy to do work. Examples are motor, lamp, or display.
Connection - allows electric current to flow. Examples are wire and cable.
[pic]
Figure 2.1: Basic electric circuits.
The basic electronic communication circuit composed of electronic (or electrical) components are:
A voltage source
Resistors,
Capacitors, and
Inductors
While the basic parameters of any electronic communication circuits are:
Voltage (in Volts)
Current (in Ampere), and
Power (in Watts)
Figure 2.2: The schematic diagram Resonant RLC circuit: Three components, R, C, and L connected to an AC voltage source: an ideal inductance, and ideal capacitance, and an ideal resistance in (a) Series-parallel and (b) Parallel.
Resister:
A resistor is a two-terminal electronic component designed to oppose an electric current by producing a voltage drop between its terminals in proportion to the current, that is, in accordance with Ohm's law: V = IR. The resistance R is equal to the voltage drop V across the resistor divided by the current I through the resistor.
Figure 2.3: R resister.
Potentiometer:
A potentiometer is a three-terminal resistor
Figure 2.4: Potentiometer.
Variable resistor:
Figure 2.5: Variable
➢ Key words:
• Electrical and electronics • Wires and cables • Analogue electronics • Digital electronics • Information, message and data • Analogue information • Digital information
2 Introduction to electronic communication systems
2.1 Basic electronic components, symbols and circuits
Components of an electronic ( or electrical) circuit
Any electrical circuit consists if three (3) basic parts
Energy source - converts non-electric energy into energy. Examples are batteries and generators.
Output device - uses electric energy to do work. Examples are motor, lamp, or display.
Connection - allows electric current to flow. Examples are wire and cable.
[pic]
Figure 2.1: Basic electric circuits.
The basic electronic communication circuit composed of electronic (or electrical) components are:
A voltage source
Resistors,
Capacitors, and
Inductors
While the basic parameters of any electronic communication circuits are:
Voltage (in Volts)
Current (in Ampere), and
Power (in Watts)
Figure 2.2: The schematic diagram Resonant RLC circuit: Three components, R, C, and L connected to an AC voltage source: an ideal inductance, and ideal capacitance, and an ideal resistance in (a) Series-parallel and (b) Parallel.
Resister:
A resistor is a two-terminal electronic component designed to oppose an electric current by producing a voltage drop between its terminals in proportion to the current, that is, in accordance with Ohm's law: V = IR. The resistance R is equal to the voltage drop V across the resistor divided by the current I through the resistor.
Figure 2.3: R resister.
Potentiometer:
A potentiometer is a three-terminal resistor
Figure 2.4: Potentiometer.
Variable resistor:
Figure 2.5: Variable