From 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 Mon Sep 17 00:00:00 2001
From: prashantsinalkar
Date: Tue, 10 Oct 2017 12:27:19 +0530
Subject: initial commit / add all books

---
 2459/CH27/EX27.2/Ex27_2.JPG     | Bin 0 -> 24027 bytes
 2459/CH27/EX27.2/Ex27_2.sce     |  30 ++++++++++++++++++++++++++++++
 2459/CH27/EX27.2/Figure27_2.jpg | Bin 0 -> 31977 bytes
 3 files changed, 30 insertions(+)
 create mode 100644 2459/CH27/EX27.2/Ex27_2.JPG
 create mode 100644 2459/CH27/EX27.2/Ex27_2.sce
 create mode 100644 2459/CH27/EX27.2/Figure27_2.jpg

(limited to '2459/CH27/EX27.2')

diff --git a/2459/CH27/EX27.2/Ex27_2.JPG b/2459/CH27/EX27.2/Ex27_2.JPG
new file mode 100644
index 000000000..ab24faffe
Binary files /dev/null and b/2459/CH27/EX27.2/Ex27_2.JPG differ
diff --git a/2459/CH27/EX27.2/Ex27_2.sce b/2459/CH27/EX27.2/Ex27_2.sce
new file mode 100644
index 000000000..1fa39220f
--- /dev/null
+++ b/2459/CH27/EX27.2/Ex27_2.sce
@@ -0,0 +1,30 @@
+//chapter27
+//example27.2
+//page575
+
+R1=4 // ohm
+R2=4 // ohm
+R3=4 // ohm
+
+// for h11 and h21, imagine that output terminals are shorted hence it is clear that input impedence is equal to R1+R2*R3/(R2+R3)
+    // this is h11 by definition so
+    h11=R1+R2*R3/(R2+R3)
+
+    // now current will divide equally at junction of 4 ohm resistors so output_current/input_current = -0.5
+    // but this ratio is h21 by definition. Thus
+    h21=-0.5
+
+// for h12 and h22 imagine a voltage source on output terminals
+    // this voltage will be divided by a factor 2
+    // hence input_voltage/output_voltage = 0.5
+    // but this ratio is h12 by definition. Thus
+    h12=0.5
+
+    // here output impedence looking into output terminals with input terminals open is 8 ohm.
+    // its reciprocal is h22 by definition. Thus
+    h22=1/8
+    
+printf("h11 = %.3f ohm \n",h11)
+printf("h21 = %.3f \n",h21)
+printf("h12 = %.3f \n",h12)
+printf("h22 = %.3f ohm \n",h22)
diff --git a/2459/CH27/EX27.2/Figure27_2.jpg b/2459/CH27/EX27.2/Figure27_2.jpg
new file mode 100644
index 000000000..cdf80584e
Binary files /dev/null and b/2459/CH27/EX27.2/Figure27_2.jpg differ
-- 
cgit