Electronic circuit
An electronic circuit is an electrical network that has an interconnection of electrical elements such as resistors, inductors, capacitors, diodes, switches and transistors. An electronic circuit can be as large as an electricity distribution network or as small as an integrated circuit on a silicon chip. The same laws govern electronic circuits, as simple electrical circuits. Electronic circuits display highly complex patterns. Electronic circuits are categorized as analog, digital or mixed-signal electronic circuits.
Electronic Circuit Diagram: A circuit diagram is popularly known as an electrical diagram or elementary diagram. It is a pictorial representation of an electrical circuit that follows a set of conventions.
A circuit diagram displays the different complex components of the circuit as simplified standard symbols and does not follow a scale. The arrangement of the components in the diagram does not correspond to their physical locations in the finished device.
A circuit diagram is much more self-explanatory than a block diagram or layout diagram. A circuit diagram provides a simplified wire interconnection being used. A more complex version of the diagram that depicts the actual arrangement of the circuit with wires and current protection components is called ‘artwork’ or ‘layout’. The design, construction and maintenance of electrical and electronic equipment are carried out using a Circuit diagram.
Electronic circuit Schematic: The elements of a system can be explained using abstract and graphic symbols rather than realistic pictures. A diagram that represents a system is called a schematic. A notable feature of a schematic is that it excludes irrelevant details.
A schematic is intended to convey and communicate the ideas in a system. A schematic can add unrealistic elements to aid comprehension. An electronic schematic diagram uses symbols to represent the transistors, inductors, resistors, batteries and other equipment of the system, emphasizing on their interconnection paths, suppressing physical details.
The schematic of an electronic circuit provides a smaller layout with symbols that resemble the layout in the physical circuit. In the schematic diagram, the symbolic elements are arranged for easier comprehension of the viewer.
Electronic Circuit projects: The development of an electronic project involves a theoretical and practical management of all features relevant to the design, development and manufacture of modern compound electronic systems and sub systems.
Some of the simple electronic projects that can be constructed as a hobby are listed below:
Traffic Light: The working of a traffic light requires the proper operation of red, amber and green LEDs in the correct sequence. In this project, students are required to set the time taken for the complete red - red & amber - green - amber sequence. A 4017 counter is used to produce the traffic light sequence and the light sequence can be altered with a breaker.
Lighthouse Model Lighthouse: This project is designed to create a model lighthouse to flash a lamp in a simple sequence of two flashes, with a short gap for a single flash. A 4017 counter is used to produce the flash sequence.
Flashing LED: This simple project helps to check your soldering skills and learn to identify common components. The LED flashes at about 3Hz or 3 flashes per second.
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