19-06-2012, 05:06 PM
Seminar on Resistors
Resistors.ppt (Size: 176.5 KB / Downloads: 253)
Resistors can be either fixed or variable in value
Fixed resistors come in a variety of different shapes, sizes and forms
Axial lead resistors have the value of resistance printed on them or as a colour code
Surface mount resistors have a numerical code indicating a value
All resistors have a tolerance value .
Variable resistors are called potentiometers
There is a fixed value of resistance between two terminals
The moving part of the potentiometer is called the wiper
Four band resistor colour code
1st band provides the first digit of the code
2nd band provides the second digit of the code
3rd band is the multiplier
4th band indicates the tolerance value