1 files changed, 22 insertions, 0 deletions
diff --git a/3507/CH16/EX16.19/Ex16_19.sce b/3507/CH16/EX16.19/Ex16_19.sce
new file mode 100644
index 000000000..26694f69c
--- /dev/null
+++ b/3507/CH16/EX16.19/Ex16_19.sce
@@ -0,0 +1,22 @@
+//chapter16
+//example16.19
+//page359
+
+Vcc=10 // V
+R1= 10 // kilo ohm
+R2=10 // kilo ohm
+Vbe=0.7 // V
+Re=4.3 // kilo ohm
+gain_beta=200
+
+V2=Vcc*R2/(R1+R2)
+Ve=V2-Vbe
+Ie=Ve/Re
+re_dash=25/Ie
+Re_dash=Re*Rl/(Re+Rl)
+Zin_base=gain_beta*(re_dash+Re_dash)
+Zin=Zin_base*(R1*R2/(R1+R2))/(Zin_base+R1*R2/(R1+R2))
+
+printf("input impedence = %.3f kilo ohm \n",Zin)
+
+// the accurate answer is 4.996 kilo ohm but in book it is given as 4.96 kilo ohm