initial commit / add all books

1 files changed, 21 insertions, 0 deletions

diff --git a/1217/CH9/EX9.4/Exa9_4.sce b/1217/CH9/EX9.4/Exa9_4.sce
new file mode 100755
index 000000000..152935f8a
--- /dev/null
+++ b/1217/CH9/EX9.4/Exa9_4.sce
@@ -0,0 +1,21 @@
+//Exa 9.4

+clc;

+clear;

+close;

+//given data

+//for the given IC LM317: 

+Iadj=100;//in micro amperes

+Vref=1.25;//in volts

+R1=240;//in ohms

+//(i) For Vo=2 volts

+//on solving equation Vo=Vref(1+R2/R1)+R2*Iadj

+Vo=2;//in volts

+R2=(Vo-Vref)/((Vref/R1)+Iadj*10^-6);

+disp(R2,"for Output 2 volts the requires value of resistance R2(in ohms) : ")

+//(i) For Vo=12 volts

+Vo1=12;//in volts

+//on solving equation Vo=Vref(1+R2/R1)+R2*Iadj

+R21=(Vo1-Vref)/(Vref/R1+Iadj*10^-6);

+disp(R21,"for Output 12 volts the requires value of resistance R2(in ohms) : ")

+//use potentiometer for adjustable value

+disp("Hence use 3kohm potentiometer to set R2.")
\ No newline at end of file