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   ENG&mohamed amr 30 2009, 11:44 am

() (Carbon Resistor). (Wire Resistor)



1-


10% 5%
http://www.qariya.com/colu/resistor_color.htm


R=ρ L/a



( )



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1-
. , ˝ ( )


- Wire-wound resistor:
( ) , ˝ 1- 2- .



3- Thermistor :
, .


[size=21]
1-[size=9] (N T C)
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[size=12]Negative Temperature Coefficient[/size]
[size=12] [/size]
[size=12]2- (P T C)[/size]
positive Temperature Coefficient

[size=16] Photoresistor LDR:
Cadmium sulfide , .





[size=21][size=21]: Voltage Dependant resistor
()
Varistor

[/size]
[/size]
[/size]
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ENG&mohamed amr


: 107
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: 05/04/2008

    

      


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