There is an amplifier circuit obtained between JFET and MOSFET. For the FET used in the circuit, IDSS = 8 mA, VGSoff = -3V and working point current is 1.42 mA.
Use MOSFET parameters as Kn = 1 (mA / V ^ 2), VTN = 1V, gm = 0.75 mA / V.
The voltage gain of the first floor in the circuit is calculated as 0.7, and the voltage gain of the second floor is calculated as -100.
R7 = 101(R8) and R8 + R9 = 4.462 KΩ.
Hi It is desired to calculate the resistance values according to the parameters given in the question (in kilo ohms). I will use re model to solve this. However, jfet is composed of common drain. The resistance of R3 is confused. Books have common drain gain but no R3 resistance. can somebody help me with the jfet's gain formula and question? @G36