How to Identify Electronic Components?

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wujian / 2018/6/22 15:42:57 / Tech

Resistance and capacitance are the most common used  in electronic components electronic equipment. Resistance divided by common materials such as: carbon film resistors, metal film resistors, cement resistors and so on. General household electrical appliances use of carbon film resistors more than others, as it cost is low. Precision metal film resistors is higher, use more sophisticated equipment. Line resistance of the cement is able to withstand the relatively high power; line resistance accuracy is comparably high, commonly used in instrument request with high measurement. 

Low-power carbon film and metal film resistors are generally expressed with color ring the size of resistor. The resistor unit is ohm. Detailed are as below:

Color ring resistance is divided into four-color rings and colored rings, start with four-color ring. As the name can see is to use four colored ring represents the size of the resistance. Each color represents a different number: 

Black 0 Brown 1 Red 2 Orange 3 Yellow 4 Green 5 Blue 6 Violet 7 Gray 8 White 9 gold, silver to show difference
Colored ring that meanings: 

The first color wheel: the resistance of the first digit; 
The second color wheel: the resistance of the second digit; 
Third color wheel: a power of 10 numbers; 
 Fourth color ring: to show difference  
 For example: resistor color code: brown green red and gold 
 The first place: 1; 
 Second place: 5; 
 Power of 10 to 2 (ie, 100); 
 Difference of 5% 
The resistance is: 15X100 = 1500 Euro = 1.5K 

There are more accurate, "5 colored ring" resistance, with the five-color ring to show the resistor size, detail as: 
The first color wheel: the resistance of the first digit; 
The second color wheel: the resistance of the second digit; 
Third color wheel: the third resistance is not digital; 
Fourth color ring: resistance power of 10 multiplier number; 
Article V color ring: difference (common brown, the difference is 1%) 

There are many other types of resistance, the general potentiometer means the resistance is the resistance can be adjusted (the adjustable resistance).

 ----- Capacitor

Capacitor used with the same resistance. Common material of the capacitance according to the different can be divided into: Porcelain Price capacitors, polyester capacitors, electrolytic capacitors, Tam capacitors, advanced polypropylene capacitors; and so on they have different purposes. 

 

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