From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 3507/CH20/EX20.9/Ex20_9.sce | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 3507/CH20/EX20.9/Ex20_9.sce

(limited to '3507/CH20/EX20.9')

diff --git a/3507/CH20/EX20.9/Ex20_9.sce b/3507/CH20/EX20.9/Ex20_9.sce
new file mode 100644
index 000000000..309661ca2
--- /dev/null
+++ b/3507/CH20/EX20.9/Ex20_9.sce
@@ -0,0 +1,21 @@
+//chapter20
+//example20.9
+//page443
+
+Vz=12 // V
+Vbe=0.7 // V
+Vin=20 // V
+Rs=220 // ohm
+Rl=1d3 // ohm
+gain=50
+
+Vout=Vz-Vbe
+V_Rs=Vin-Vz
+I_Rs=V_Rs/Rs
+Il=Vout/Rl
+Ic=Il
+Ib=Ic/gain
+Iz=I_Rs-Ib
+
+printf("output voltage = %.3f V \n",Vout)
+printf("zener current = %.3f mA \n",Iz*1000)
-- 
cgit