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

---
 1757/CH11/EX11.8/EX11_8.sce | 65 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100755 1757/CH11/EX11.8/EX11_8.sce

(limited to '1757/CH11/EX11.8/EX11_8.sce')

diff --git a/1757/CH11/EX11.8/EX11_8.sce b/1757/CH11/EX11.8/EX11_8.sce
new file mode 100755
index 000000000..f94436d43
--- /dev/null
+++ b/1757/CH11/EX11.8/EX11_8.sce
@@ -0,0 +1,65 @@
+//Example11.8 // determine the feed back current If and analog output voltage
+clc;
+clear;
+close;
+Vref = 5  ;   
+BI = 101 ;   BI = 011 ;   BI = 100 ;  BI = 001 ;
+Rf = 25*10^3 ; 
+R = 0.2*Rf ;
+
+// The output current of given R-2R ladder D/A converter is defined as
+
+// If = -(Vref/2*R)*(2^0*b0+2^-1*b1+2^-2*b2) ;
+
+// If = -(Vref/2*R)*(b0+2^-1*b1+2^-2*b2) ;
+
+// for the given value Rf,R and Vref the output current
+
+// If = (0.5*10^-3)*(b0+2^-1*b1+2^-2*b2) ;
+
+// for the binary input 101 the feedback current If is given by
+b2 = 1 ;
+b1 = 0 ;
+b0 = 1 ;
+If = (0.5*10^-3)*(b0+2^-1*b1+2^-2*b2) ;
+disp('for the binary input 101 analog output is = '+string(If)+ ' A ');
+
+// An analog output voltage Vo is
+Vo = -If*Rf ;
+disp('An analog output voltage Vo is = '+string(Vo)+ ' V ');
+
+
+// for the binary input 011 the feedback current If is given by
+b2 = 0 ;
+b1 = 1 ;
+b0 = 1 ;
+If = (0.5*10^-3)*(b0+2^-1*b1+2^-2*b2) ;
+disp('for the binary input 011 analog output is = '+string(If)+ ' A');
+
+// the An analog output voltage Vo is
+Vo = -If*Rf ;
+disp('An analog output voltage Vo is = '+string(Vo)+ ' V ');
+
+
+// for the binary input 100 the feedback current If is given by
+b2 = 1 ;
+b1 = 0 ;
+b0 = 0 ;
+If = (0.5*10^-3)*(b0+2^-1*b1+2^-2*b2) ;
+disp('for the binary input 100 analog output is = '+string(If)+ ' A ');
+
+// the An analog output voltage Vo is
+Vo = -If*Rf ;
+disp('An analog output voltage Vo is = '+string(Vo)+ ' V ');
+
+// for the binary input 001 the feedback current If is given by
+b2 = 0 ;
+b1 = 0 ;
+b0 = 1 ;
+If = (0.5*10^-3)*(b0+2^-1*b1+2^-2*b2) ;
+disp('for the binary input 001 analog output is = '+string(If)+ ' A ');
+
+// the An analog output voltage Vo is
+Vo = -If*Rf ;
+disp('An analog output voltage Vo is = '+string(Vo)+ ' V ');
+
-- 
cgit