2 files changed, 23 insertions, 0 deletions
diff --git a/620/CH18/EX18.4/example18_4.sce b/620/CH18/EX18.4/example18_4.sce
new file mode 100644
index 000000000..2f11f4931
--- /dev/null
+++ b/620/CH18/EX18.4/example18_4.sce
@@ -0,0 +1,23 @@
+v=20;
+r1=125;
+r2=4;
+disp("Part a");
+n=sqrt(r1/r2);
+disp("the required turns ratio is"); disp(n);
+disp("Part b");
+v1=v/2;
+i1=v1/r1;
+disp("the primary input voltage (in V) is"); disp(v1);
+disp("the primary current (in mA) is"); disp(i1*10^3);
+disp("Part c");
+v2=v1/n;
+i2=n*i1;
+disp("the secondary output voltage (in V) is"); disp(v2);
+disp("the secondary current (in mA) is"); disp(i2);
+disp("Part d");
+p=i2^2*r2;
+disp("the output power transferred (in W) is"); disp(p);
+disp("Part e");
+i=v/(r1+r2);
+p1=i^2*r2;
+disp("the power transferred (in W) to the loudspeaker is"); disp(p1);
+\ No newline at end of file
diff --git a/620/CH18/EX18.4/example18_4.txt b/620/CH18/EX18.4/example18_4.txt
new file mode 100644
index 000000000..b5f09b32e
--- /dev/null
+++ b/620/CH18/EX18.4/example18_4.txt