Procedure: Build the JFET CS Amplifier Circuit.
VDD
IDS
R2
6.0V
1k?
C2
R1
Q1
BFW11
C1
Vout
Vin
V1
100F
100k?
100F
0.1Vpk
10KHz
0
VDS
VGS
R3
10?
VGG
1V
Fig. 1.
Part One: DC Part
1- Measure the DC parts (Without ac source and without capacitors).
2- Measure ID, VGS, VDS before connecting ac part.
3- Compute gm
Part Two: ac Part
4- Add ac parts (ac source, capacitors and RL).
5- Use Vin with VP=100mV, f=10KHz, VGG=1 V.
6- Use Oscilloscope to display $V_{in}$ and $V_{out}$
7- Compute Voltage Gain.