Show that for a JFET

$$g_m = \dfrac{2}{\vert V_p \vert}\sqrt{l_{DSS}.l_{DS}}$$

Characteristics of JFETS

There are two types of static characteristics viz

1. Output or drain characteristics and

2. Transfer characteristic.

1) Output or Drain Characteristic.

• The curve drawn bertween drain current $I_p$ and drain-source voltage VDS with gate-to source voltage VGS as the parameter is called the drain or output characteristic. This …