Metal Film Resistors

              Metal Film Resistors :-

 • Metal film resistors are used when a higher tolerance (more  accurate value) is needed.

 • Nichrome (Ni-Cr) is generally used for the material of resistor.

 

 • They are much more accurate in value than carbon film resistors. They have about 

±0.05% tolerance.

                            

Wire wound Resistor :-

• A wire wound resistor is made of metal resistance wire, and because of this, they can be 

manufactured to precise values. Also, high-wattage resistors can be made by using a thick

wire  material. Wire wound resistors cannot be used for high  frequency circuits.

                         

                          

Wire wound Resistor :-

                           

Ceramic Resistor:-

• Another type of resistor is the Ceramic resistor. These are wire wound resistors 

in a ceramic case, strengthened with a special cement.

• They have very high power ratings, from 1 or 2 watts to dozens  of watts.

• These resistors can become extremely hot when used for high power applications, and 

   this must be taken into account when designing the circuit.

        

Ceramic Resistor :-