The figure shows a model of a real power amplifier. The dependent source is a voltage-controlled current source with characteristic
iD = K/2 (vGS – VT)2 if vGS > VT
iD = 0 if vGS < VT
This device model has two parameters K = 2.0 A/V2 and VT = 2.0V
Assume that the power supply voltage VDD = 145.0 V, and resistance RS = 22.0 ohm and RL = 120 ohm,
Assume the input bias voltage VI = 6.5V
What is the bias current ID, in Amperes, and output bias voltage Vo in volts?
I tried to substitute to the iD formula but unable to get a correct answer, do we need to include the voltage of VDD?
iD = K/2 (vGS – VT)2 if vGS > VT
iD = 0 if vGS < VT
This device model has two parameters K = 2.0 A/V2 and VT = 2.0V
Assume that the power supply voltage VDD = 145.0 V, and resistance RS = 22.0 ohm and RL = 120 ohm,
Assume the input bias voltage VI = 6.5V
What is the bias current ID, in Amperes, and output bias voltage Vo in volts?
I tried to substitute to the iD formula but unable to get a correct answer, do we need to include the voltage of VDD?