DRAIN CURRENT VERSUS DRAIN VOLTAGE

Drain current I_D can be plotted as a function of drain voltage E_D for various values of gate bias voltage E_G. The resulting set of curves is called a family of characteristic curves for the device. Figure 1 shows a family of

Fig. 1. A family of characteristic curves for a hypothetical n-channel JFET.

characteristic curves for a hypothetical n-channel JFET. Also of importance is the curve of I_D versus E_G.