Basic Electronics and Electrical Theory

ElectricalGuiden - To become a reliable electronics technician , one thing must be learnt are the basic theory of electronics and electricity .These theories will be very useful and helpful when a practice in the field. Electronics theory like foundation . If the foundation is solid , so the house will not be easy to collapse

There are several subs- theories must be studied , we can start from electron theory , atomic theory , electric current , voltage, ohms law , and many things .this article we invite all of you to see info about learning basic in this moment will be continued to discuss the theory of electronics

Basic Electronics Theory 
Here are some basic theory and basic electrical electronics must be learnt and understood if you want to become an expert in the world of electronics . Intrigued by full information ? Please keep following this article completely

1.Theory of Electron and Atom
If an object or substance either solid, liquid , or gas , is divided into the smallest part , and the part still has its original properties , the object or substance is called molecules. If the molecule continues to be divided into sections that most small , so that the parts do not have the original nature again , then that is called atom

The word of atom actually comes from the Greek who meaning can not be divided again . So the atoms can be defined as the smallest part of the molecule that is no longer divided by the ordinary chemical reaction . While the molecule is the smallest part of an object that still has the nature of origin

An atom consists of a nucleus of an atom nucleus composed of protons ( positive ) and neutrons ( neutral ) , which is surrounded by electrons ( negative ) . An atom is said to be neutral when it has a positive and negative charge in the same amount . In atom theory ,term of free electrons also known as outer electron or valency electrons

In the law of electric charge, if any similar objects with the same charge push away from each other. Meanwhile, if two objects with opposite charges pull towards each other. In theory the displacement of electric charges, there are three kinds of materials, known as the conductor or conductor, semiconductor or semiconductor and insulator or resistor

2.theory of electric current
Definition of electric current is negative charges or electrons flowing from a low potential toward a high potential. The measuring unit of current is Ampere. In the theory of electrical current, there are two types of source of electric current, which is a source of direct current or DC and the source of alternating current or AC
The source of DC current is electricity that does not change phase. An example is a battery, solar cell, accumulator, dynamo, and adapters. While the AC current is the electric current that changing phase at any time. An example is a generator and inverter. Tools that can be used to measure electrical current is ammeters
Electric Current Formula

I = Q/t 

where :
I   =  Current in Ampere
Q  =  Electric Charge In Coulombs
t    =  Time in second

3.Theory Voltage
The definition of power supply voltage is the energy or force that causes the negative charges or electrons that flowing in the conductor. The unit value of the power supply voltage is V (Volts). The tools used to measure the size of the power supply voltage is voltmeter

Voltage Formula

V = W/Q

V  = The Volt in Volt
W = Energy Consumed In Joule
Q =  Electric Charge In Coulombs

4.Theory Resistor / Barriers
The Resistor is a passive electronic component that serves as an electrical resistance. Unit value resistor is Ohm. The tools used to measure the resistance resistor is Ohmmeter. The theory is closely related to the resistor is theories George Simon Ohm with mercury research water pool

Based on material composition, the resistor has 5 types, namely carbon resistors, compound, wire rolls, iron powder, and the metal film. Meanwhile, if viewed from the type, there is a fixed resistor, variable resistor, Negative temperature coefficient (NTC), Positive temperature coefficient (PTC), Light-dependent resistor (LDR), and magnetic dependent resistors (MDR)

The value of resistance possessed a resistor can be seen from the rings of its color. The first ring stating the first number (digits to-1). the Second ring stating second number (2nd digit). The third ring stated the number zero or multiplier. The fourth ring stated tolerance

The Law that discusses the resistor is Ohm's law like propounded by George Simon Ohm. The ohm's law stated potential difference (voltage) across in closed circuit is proportional to the current through it.

5.Theory of Power
Definition of power is amount consumed energy to doing work per unit time,the equation for power can be written

Power Formula

P = W/t

P  =  Power In Watt
W = Consumed Energy In Joule
t   = Time in second

When making calculations,make sure value units must be compitable. If the units are not ohms (for resistance), amperes (for current), and volts for voltage),please convert into standard measure unit firstly For example, microamperes should be converted to ampere, and microvolts should be converted to volt

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