R
Now determine the required value of V
GS
.
Since
ID
K (VGS V
t
)
2
, we find that V
GS
should be:
VGS ID V K
4.0
1.0
1.0
3.0 V
Set the required value of gate
voltage VG .
VG VGS VS
3.0 4.0
7.0 V
Since the gate current is zero (iG division that: 0 ), we find from voltage
VG
R1
VDD
1
R
2
Therefore: R1
VDD
1
2V
t
