()- ( )- Ohm R Resistor
Ω




ǡ :
1- .
2- .
3- .
4- .
.................................................
:-
.



:- (Potentiometer or Variable Resistor VR)
.
: 10 KΩ
̡ (0- 10KΩ ) 10KΩ .
ɡ "" .
:
:- ( LDR )
(CDS)
.
(2M ohm)
(100 ohm)
.


. .


.

CdS CdSe .
520 730
Lead sulfid 30 - 53 (1 = 1/1.000.000 ) 454 - 56
:- ( Thermistor )

:
12K ohm 0 C
5K ohm 25 C
400 ohm 100 C

1- ( PTC ) Positive Temperature Coefficient Thermistor

2- ( NTC ) Negative Temperature Coefficient Thermistor


3- ( CTR ) Critical Temperature Coefficient

.................................................. .


.


Varistor
Variable resistance ( Varistor Variable resistance) .
. ޡ . Spike
220 ϡ 400 ( ) 220 400 Spike
Voltage Dependant Resistor VDR.
( V )
..
:





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