resistor doubt!

Thread Starter

aj_silverthunder

Joined Jun 6, 2009
116
in many RF amplifier u can see resistor of value " 470ohm/2W" ,then what will be the color code for that resistor!please explain me guys! the resistor code for 470Ω is yellow violet brown,but how to identify the watts!
 

ELECTRONERD

Joined May 26, 2009
1,147
Resistor color bands determine the actual resistance value in ohms. So since you want a 470Ω resistor, the color bands would be yellow, purple, and brown. The third band is the multiplier, so since brown=1 that means we have only one zero. If it was a yellow band then we'd implement four zero's. Then there is tolerance band which is usually gold (5%); this indicates the accuracy of the resistors value. So the resistor color bands only give you the resistance value in ohms.

Austin
 
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