Скачать или смотреть DC Circuit, Basic Concept of Electricity, Conductors, Insulators, Current Flow and Electric Circuits

Gamma Classroom is presenting a series videos of "Introduction to Electrical Engineering". The series videos will be good for high school students who want to do electrical engineering jobs in the future.
The series videos will be good for new electrical engineers and help them for career developing. The series videos will also be good for the people who want to change their career path to electrical
engineering.

This video introduces conductors, insulators, current flow and electric circuit.

The electrons of different types of atoms have different degrees of freedom to move around. With some types of materials, such as metals, the outermost electrons in the atoms are so loosely bound
that they chaotically move in the space between the atoms of that material by nothing more than the influence of room-temperature heat energy. Because these virtually unbound electrons are free to
leave their respective atoms and float around in the space between adjacent atoms, they are often called free electrons.

In other types of materials such as glass, the atoms' electrons have very little freedom to move around.

Materials with high electron mobility (many free electrons) are called CONDUCTORS.

While materials with low electron mobility (few or no free electrons) are called INSULATORS.


• In conductive materials, the outer electrons in each atom can easily come or go and are called free electrons.
• In insulating materials, the outer electrons are not so free to move.
• All metals are electrically conductive.
• Dynamic electricity, or electric current, is the uniform motion of electrons through a conductor.
• A circuit is an unbroken loop of conductive material that allows electrons to flow through continuously without beginning or end.
• If a circuit is "broken“, that means its conductive elements no longer form a complete path, and continuous electron flow cannot occur in it.
• The location of a break in a circuit is irrelevant to its inability to sustain continuous electron flow. Any break, anywhere in a circuit prevents electron flow throughout the circuit.



Those videos are from basic electrical concepts, gradually to expert level, included most area of electrical engineering, electrical power system, renewable power system, industry automations, and so on,
from calculation, design, layout, studies, programs and more. The "introduction to Electrical Engineering" will include as follow:
1 DC Circuit,
2 AC Circuit,
3 Semiconductors,
4 Digital,
5 Useful reference, standards,
6 Experiments and tools,

In the DC circuit part, it will include as follows:
1.1 Basic concepts of electricity,
1.2 Ohm`s law,
1.3 Electrical safety,
1.4 Scientific notation and metric prefixes,
1.5 Series and parallel circuits,
1.6 Divider circuits and Kirchhoff`s laws,
1.7 Series-parallel combination circuits,
1.8 DC metering circuits,
1.9 Electrical instrumentation signals,
1.10 DC network analysis,
1.11 Batteries and power system,
1.12 Physics of conductors and insulators,
1.13 Capacitors,
1.14 Magnetism and electromagnetism,
1.15 Inductors,
1.16 RC and LR time constants

The ``Basic concepts of electricity`` includes follows:
1.1-1 Static electricity,
1.1-2 Conductors, insulators, current flow and electric circuits
1.1-3 Voltage and current,
1.1-4 Resistance,
1.1-5 Voltage and current in a practical circuit,
1.1-6 Conventional versus electron flow

MUSIC:
Peaceful Forest - Into Oblivion by Darren Curtis
Creative commons Attribution 3.0 Unported License
https://creativecommons.org/licenses/...
Music promoted by https://www.chosic.com
Thank you!

Lots of information from Reference Book: ``Lessons in Electric Circuits``. The original writer is: Tony R. Kuphaldt. Thank you very much!