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      • Before Your First Circuit
      • Measure electricity
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      • Ohm's Law
      • Series and Parallel Circuits
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    • πŸ‘03-Analog Circuits and Semiconductors
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      • Chapter 3 Code
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  • Circuit Diagram
  • Pictorial Diagram
  • Schematic Diagram
  • Short Circuit

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  1. Electronics Engineering
  2. 01-Basic Electricity

Before Your First Circuit

Some key points before taking practice

Previous01-Basic ElectricityNextMeasure electricity

Last updated 1 year ago

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Circuit Diagram

Circuit diagrams are essential visual tools in electronics, providing a graphical representation of an electrical circuit's components and connections. There are two primary styles of circuit diagrams: pictorial and schematic.

Pictorial Diagram

In a pictorial-style circuit diagram, components are depicted using realistic, easily recognizable images of the actual physical components. This style is intuitive and beginner-friendly, making it accessible to those who may not have extensive technical knowledge.

However, as circuits grow in complexity, pictorial diagrams tend to become less practical. In intricate designs, they can quickly become cluttered and challenging to follow. Also, drawing illustrative graphics of each component and wiring may take a lot of effort. Yes, your guess is correct, all these pictures were hand-drawn by our engineers and artists, which truly took a lot of effort.

Schematic Diagram

By employing standardized symbols for components and lines to represent connections, schematic style diagram is more abstract and less intuitive than the pictorial style but instead prioritizes clarity and conciseness.

The schematic style is the preferred choice in professional electronics as it can efficiently convey intricate circuit designs without overwhelming complexity. In complex circuits, the schematic style allows for a systematic and organized representation, facilitating comprehensive analysis and troubleshooting.

At this point, it is normal for a schematic diagram, to appear overwhelmingly complex. Understanding these diagrams requires knowing each component's role and their operational principles in a circuit. As you advance through our learning plan, you will gradually become more familiar with these symbols and develop the skill to design and interpret increasingly complex circuits.

Short Circuit

A short circuit is an electrical condition where the current deviates from its intended path and travels along a shorter pathway. This usually happens when a connection is made between two points in an electrical system that were not supposed to be connected, usually to the power supply. This results in an excessive current flowing through the circuit, as the electrical resistance is significantly reduced to almost zero.

Short circuits can be caused by various factors, including damaged wires, loose connections, water or other fluids coming into contact with electrical wiring, or even pests chewing through wires.

Unless operated intentionally, unexpected short circuits are generally undesirable and even dangerous. Without built-in protection mechanisms, a short circuit typically involves a large flow of current and rapid heating buildup, which can lead to various problems, including damage to electrical devices, fires, and even electrocution. Therefore, it is crucial to promptly identify and rectify short circuits to mitigate potential hazards.

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A pictorial diagram
Pictorial diagram (left) and circuit schematic diagram (right)
A relatively complicated schematic diagram
The outcome of short circuit might be severe