diff options
Diffstat (limited to '3754/CH30/EX30.19')
| -rw-r--r-- | 3754/CH30/EX30.19/30_19.sce | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/3754/CH30/EX30.19/30_19.sce b/3754/CH30/EX30.19/30_19.sce new file mode 100644 index 000000000..ac3bfbffd --- /dev/null +++ b/3754/CH30/EX30.19/30_19.sce @@ -0,0 +1,22 @@ +clear//
+
+//Variables
+
+gmo = 5.0 * 10**-3 //Maximum transconductance (in Siemen)
+RD = 1.0 * 10**3 //Drain resistance (in ohm)
+RS = 200.0 //Source resistance (in ohm)
+ID = 5.0 * 10**-3 //Drain current (in Ampere)
+
+//Calculation
+
+R1i = RS * 1/gmo /(RS + 1/gmo) //Input resistance (in ohm)
+VS = ID * RS //Source voltage (in volts)
+VGS = VS //Gate-to-Source voltage (in volts)
+IDSS = 2 * ID //Supply current (in Ampere)
+VGSoff = -2 * IDSS / ID //Gate-to-source cut off voltage (in volts)
+gm = gmo * (1 - abs(VGS / VGSoff)) //Transconductance (in Siemen)
+Av = gm * RD //Voltage gain
+
+//Result
+
+printf("\n Input resistance is %0.3f ohm.\na.c. voltage gain is %0.3f .",R1i,Av)
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