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/CH9/EX9.20/Ex9_20.sce | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 3507/CH9/EX9.20/Ex9_20.sce

(limited to '3507/CH9/EX9.20/Ex9_20.sce')

diff --git a/3507/CH9/EX9.20/Ex9_20.sce b/3507/CH9/EX9.20/Ex9_20.sce
new file mode 100644
index 000000000..19c9f7120
--- /dev/null
+++ b/3507/CH9/EX9.20/Ex9_20.sce
@@ -0,0 +1,21 @@
+//chapter9
+//example9.20
+//page170
+
+R=5 // kilo ohm
+Rl=10 // kilo ohm
+Ei=120 // V
+Vz=50 // V
+
+V=Ei*Rl/(R+Rl) // voltage across open circuit if zener diode is removed
+Vo=Vz // output voltage
+V_R=Ei-Vz // drop across R
+Il=Vz/Rl // load current 
+I=V_R/R // current through R
+
+// by Kirchoff first law I=Iz+Il
+Iz=I-Il
+
+printf("output voltage = %.3f V \n",Vo)
+printf("voltage drop across series resistance = %.3f V \n",V_R)
+printf("current through Zener diode = %.3f mA \n",Iz)
-- 
cgit