diff --git a/.gitignore b/.gitignore
index d22ae72a53432b08eadb9f150bc1c0804cdbdeea..792f2ab6c65785aa0f19877754f243fed629bef8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 *.bak
 *.dcm
+*.bck
 
diff --git a/Amplifier/TI/tl97x.lib b/Amplifier/TI/tl97x.lib
new file mode 100644
index 0000000000000000000000000000000000000000..5290ef36dd4f1fa0b4b9ac07ad41afcf24b1be4e
--- /dev/null
+++ b/Amplifier/TI/tl97x.lib
@@ -0,0 +1,25 @@
+EESchema-LIBRARY Version 2.3  Date: Thu 12 Feb 2015 02:29:12 PM CET
+#encoding utf-8
+#
+# TL972
+#
+DEF TL972 U 0 40 Y Y 2 L N
+F0 "U" 250 100 60 H V C CNN
+F1 "TL972" 250 200 60 H V C CNN
+F2 "~" 0 0 60 H V C CNN
+F3 "~" 0 0 60 H V C CNN
+DRAW
+P 2 0 1 0  -100 200  300 0 N
+P 6 0 1 0  -100 200  -100 -200  0 -150  100 -100  200 -50  300 0 f
+X V- 4 0 -250 100 U 25 25 0 1 W
+X V+ 8 0 250 100 D 25 25 0 1 W
+X ~ 1 400 0 100 L 25 25 1 1 O
+X - 2 -200 -100 100 R 25 25 1 1 I
+X + 3 -200 100 100 R 25 25 1 1 I
+X + 5 -200 100 100 R 25 25 2 1 I
+X - 6 -200 -100 100 R 25 25 2 1 I
+X ~ 7 400 0 100 L 25 25 2 1 O
+ENDDRAW
+ENDDEF
+#
+#End Library