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Derive the different parameters of JFET andrelationship between them |
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Answer» CHARACTERISTICS OF JFETS There are two types of static characteristics viz (1) Output or drain characteristic and (2) Transfer characteristic. 1.Output or Drain Characteristic. The curve drawn between drain current Ipanddrain-source voltage VDSwith gate-to source voltage VGSas the parameter is called thedrainoroutput characteristic.This characteristic is analogous to collector characteristicof a BJTTransfer Characteristic of JFET The transfer characteristic for a JFET can be determined experimentally, keeping drain-source voltage,VDSconstant and determining drain current, IDfor various values of gate-source voltage, VGS. (i)Drain current decreases with the increase in negative gate-source bias (ii)Drain current, ID= IDSSwhen VGS= 0 (iii)Drain current, ID= 0 when VGS= VD |
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