The different types of Adapters

Adapters are available in different shapes and sizes according to its usage, including the very small and very big types. The most important kinds are Power Adapters and Audio Adapters .


Components of the Adapters :
Adapters consists of the following main parts:


The Core: which is a piece of iron .
The Main Coil: The entrance to the adapter .
The Secondary Coil : The outlet of the adapter .

Both files, main and secondary coiles are two wires wrapped on the core and doesn't touch each other.


These are some types of Adapters that you might see :



Power Adapter

Plug Adapter

Variable Voltage Adapter

Audio Adapter

DC Adapter

Electronic Board Adapter

Adapters are used to raise or lower voltage or power in electrical circuits.
And Adapters based on the feature of Mutual Inductance .

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How to check Unijunction Transistor (Ujt)

Examining this type of transistors is very easy when you follow the following steps:



1- Put the status of digital Mmeltamitr to read ohms and the resistance between Base1 and Base2 to put (+) on the first base and (-) on the second base. Then reflect the polar, probably in both cases, the resistance will be equal high.


2- Put the wire (-) on the Emitter and from wire (+) Calculate the resistance between the Emitter and Base1, and the resistance between the Emitter and Base2. Both readings will mark on high value and equal to the resistance.


3- Flip the wire (-) to the Emitter (+). And now from the wire (-) Calculate the resistance between the Emitter and Base1, and the resistance between the Emitter and Base2. Both readings will mark on small value and equal to the resistance.

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PCB Resistance Reader Application

You can use this free program to read the values ​​of resistors, carbon film and metal used in electronic circuits.

This free program gives you the ability to:

1 - Read the resistors with the four color rings
2 - Read the resistors with the five color rings
And tolerance rates widely used for both types

Color interface Changed in line with your choice of colors of resistance to be read.

Comparability : 98/2000/XP/Vista/7
Extension: EXE
Size: 320.5 KB
Download : Click Here


This is another resistance reader according to color and tolerance.

Comparability : 98/2000/XP/Vista/7
Extension: EXE
Size: 212 KB
Download : Click Here

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Electronic components abbreviations

Here is a list of Electronic Component name abbreviations widely used in the electronics industry:

AC: Alternating Current
ADC: Analog To Digital Converter 
DAC: Digital To Analog Converter
PAM: Pulse Amplitude Modulation
RF: Radio Frequency
SW: Short Wave
CB: Citizens Band
IF: Intermediate Frequency
LF: low Frequency
STN: Signal-to-Noise
SNR: Signal –to-Noise Ratio 
LO: Local Oscillator
CCTV: Close Circuit Television
ETV: Educational TV
CMOS: Complementary MOS
FET: Field Effect Transistor
LED: Light Emitting Diode
SCR: Silicon Controlled Rectifier
DCTL: Direct Coupled: Transistor Logic 
DTL: Diode Transistor Logic
RTL: Resistor Transistor Logic
TTL: Transistor-Transistor Logic
DMM: Digital Multi Meter
DVM: Digital Voltmeter 
CRO: Cathode Ray Oscilloscope
DPDT: Double Pole Double: Throw
ADF: Automatic Direction Finder
ADP: Automatic Data Processing
AFC: Automatic Frequency Control
AGC: Automatic Gain Control
BMEWS: Ballistic Missile: Early Warning System

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Different components with the same name

There are a lot of electronic parts that have the same name, but the shape is different and in this post I will show you some of them illustrated by their pictures .

1- Diodes

2- Leds

3- Switches

 4- Transistors

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