Diode Internal Resistances

Diode Internal Resistances:

Resistance is the ratio of voltage and  current. For a resistor this value is constant. Because it's voltage current relationship is linear or when we plot IV curve of a resistor, there is a straight line. However, when we look at a diode's IV curve, we notice that it is not linear.

Every semiconductor device has some resistance due to which it is unable to exhibit ideal characteristics. Diode also has two internal resistances i.e. DC and AC resistances.

DC or static resistance:

Depends on shape of the curve
It Depends on the current through diode the higher the current the lower will be the resistance

AC or dynamic or incremental resistance:

It is small signal resistance. this resistance varies inversely with current.
      
 
 
          
 
   

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