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Diffstat (limited to '2459/CH22/EX22.7/Ex22_7.sce')
| -rw-r--r-- | 2459/CH22/EX22.7/Ex22_7.sce | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/2459/CH22/EX22.7/Ex22_7.sce b/2459/CH22/EX22.7/Ex22_7.sce new file mode 100644 index 000000000..0d90eb9bd --- /dev/null +++ b/2459/CH22/EX22.7/Ex22_7.sce @@ -0,0 +1,19 @@ +//chapter22
+//example22.7
+//page496
+
+I_DSS=5d-3 // A
+V_DD=20 // V
+V_DS=10 // V
+V_P=-2 // V
+V_G=0 // V
+I_D=1.5d-3 // A
+
+V_GS=V_P*(1-((I_D/I_DSS)^0.5)) // I_D=I_DSS*(1-V_GS/V_P)^2
+V_S=V_G-V_GS
+R_S=V_S/I_D
+
+// by Kirchoff's law we get V_DD=I_D*R_D+V_DS+I_D*R_S so making R_D as subject we get
+R_D=(V_DD-V_DS-I_D*R_S)/I_D
+
+printf("Rs = %.3f kilo ohm and Rd = %.3f kilo ohm \n",R_S/1000,R_D/1000)
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