diff --git a/library/ac-dc.lib b/library/ac-dc.lib
index c5199f53..c90874d2 100644
--- a/library/ac-dc.lib
+++ b/library/ac-dc.lib
@@ -451,6 +451,130 @@ X HV 8 0 400 100 D 50 50 1 1 I
 ENDDRAW
 ENDDEF
 #
+# TL494
+#
+DEF TL494 U 0 20 Y Y 1 F N
+F0 "U" 150 750 50 H V L CNN
+F1 "TL494" 150 650 50 H V L CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ TSSOP*4.4x5mm*Pitch0.65mm*
+ SOIC*3.9x9.9mm*Pitch1.27mm*
+ SOIC*5.3x10.3mm*Pitch1.27mm*
+ DIP*W7.62mm*
+$ENDFPLIST
+DRAW
+S -400 -500 400 600 0 1 10 f
+X 1IN+ 1 -500 400 100 R 50 50 1 1 I
+X 1IN- 2 -500 500 100 R 50 50 1 1 I
+X FB 3 -500 100 100 R 50 50 1 1 I
+X DTC 4 -500 -100 100 R 50 50 1 1 I
+X CT 5 -500 -400 100 R 50 50 1 1 P
+X RT 6 -500 -300 100 R 50 50 1 1 P
+X GND 7 0 -600 100 U 50 50 1 1 W
+X C1 8 500 200 100 L 50 50 1 1 C
+X E1 9 500 -100 100 L 50 50 1 1 E
+X E2 10 500 -200 100 L 50 50 1 1 E
+X C2 11 500 100 100 L 50 50 1 1 C
+X VCC 12 0 700 100 D 50 50 1 1 W
+X OUTCTRL 13 -500 -200 100 R 50 50 1 1 I
+X REF 14 -500 0 100 R 50 50 1 1 W
+X 2IN- 15 -500 200 100 R 50 50 1 1 I
+X 2IN+ 16 -500 300 100 R 50 50 1 1 I
+ENDDRAW
+ENDDEF
+#
+# UC3525
+#
+DEF UC3525 U 0 20 Y Y 1 F N
+F0 "U" 150 750 50 H V L CNN
+F1 "UC3525" 150 650 50 H V L CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+ALIAS UC3527 SG3525
+$FPLIST
+ SOIC*3.9x9.9mm*Pitch1.27mm*
+ SOIC*7.5x10.3mm*Pitch1.27mm*
+ DIP*W7.62mm*
+$ENDFPLIST
+DRAW
+S -400 -600 400 600 0 1 10 f
+X INV 1 -500 400 100 R 50 50 1 1 I
+X NI 2 -500 500 100 R 50 50 1 1 I
+X SYNC 3 -500 0 100 R 50 50 1 1 P
+X OSC 4 -500 -100 100 R 50 50 1 1 O
+X CT 5 -500 -300 100 R 50 50 1 1 P
+X RT 6 -500 -200 100 R 50 50 1 1 P
+X DISCH 7 -500 -400 100 R 50 50 1 1 P
+X SS 8 -500 -500 100 R 50 50 1 1 P
+X COMP 9 -500 300 100 R 50 50 1 1 P
+X SD 10 -500 100 100 R 50 50 1 1 P
+X OUTA 11 500 100 100 L 50 50 1 1 O
+X GND 12 0 -700 100 U 50 50 1 1 W
+X VC 13 100 700 100 D 50 50 1 1 W
+X OUTB 14 500 -100 100 L 50 50 1 1 O
+X VIN 15 0 700 100 D 50 50 1 1 W
+X REF 16 -500 200 100 R 50 50 1 1 W
+ENDDRAW
+ENDDEF
+#
+# UC3842_DIP8
+#
+DEF UC3842_DIP8 U 0 20 Y Y 1 F N
+F0 "U" 150 450 50 H V L CNN
+F1 "UC3842_DIP8" 150 350 50 H V L CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+ALIAS UC3842_SOIC8 UC3843_DIP8 UC3843_SOIC8 UC3844_DIP8 UC3844_SOIC8 UC3845_DIP8 UC3845_SOIC8 UCC3800 UCC3801 UCC3802 UCC3803 UCC3804 UCC3805
+$FPLIST
+ TSSOP*4.4x3mm*Pitch0.65mm*
+ SOIC*3.9x4.9mm*Pitch1.27mm*
+ DIP*W7.62mm*
+$ENDFPLIST
+DRAW
+S -400 -300 400 300 0 1 10 f
+X COMP 1 -500 200 100 R 50 50 1 1 P
+X FB 2 -500 100 100 R 50 50 1 1 I
+X CS 3 500 -200 100 L 50 50 1 1 I
+X RC 4 -500 -200 100 R 50 50 1 1 P
+X GND 5 0 -400 100 U 50 50 1 1 W
+X OUT 6 500 200 100 L 50 50 1 1 O
+X VCC 7 0 400 100 D 50 50 1 1 W
+X REF 8 -500 -100 100 R 50 50 1 1 W
+ENDDRAW
+ENDDEF
+#
+# UC3842_SOIC14
+#
+DEF UC3842_SOIC14 U 0 20 Y Y 1 F N
+F0 "U" 150 450 50 H V L CNN
+F1 "UC3842_SOIC14" 150 350 50 H V L CNN
+F2 "Housings_SOIC:SOIC-14_3.9x8.7mm_Pitch1.27mm" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+ALIAS UC3843_SOIC14 UC3844_SOIC14 UC3845_SOIC14
+$FPLIST
+ SOIC*3.9x8.7mm*Pitch1.27mm*
+$ENDFPLIST
+DRAW
+S -400 -300 400 300 0 1 10 f
+X COMP 1 -500 200 100 R 50 50 1 1 P
+X NC 2 -400 -300 100 U 50 50 1 1 N N
+X FB 3 -500 100 100 R 50 50 1 1 I
+X NC 4 -300 -300 100 U 50 50 1 1 N N
+X CS 5 500 -200 100 L 50 50 1 1 I
+X NC 6 -200 -300 100 U 50 50 1 1 N N
+X RC 7 -500 -200 100 R 50 50 1 1 P
+X PWRGND 8 100 -400 100 U 50 50 1 1 W
+X GND 9 0 -400 100 U 50 50 1 1 W
+X OUT 10 500 200 100 L 50 50 1 1 O
+X VC 11 100 400 100 D 50 50 1 1 W
+X VCC 12 0 400 100 D 50 50 1 1 W
+X NC 13 -100 -300 100 U 50 50 1 1 N N
+X REF 14 -500 -100 100 R 50 50 1 1 W
+ENDDRAW
+ENDDEF
+#
 # UC3846X-D08-T
 #
 DEF UC3846X-D08-T U 0 40 Y Y 1 F N
@@ -473,6 +597,52 @@ X GND 8 -400 -300 100 R 50 50 1 1 W
 ENDDRAW
 ENDDEF
 #
+# UCC3808D
+#
+DEF UCC3808D U 0 20 Y Y 1 F N
+F0 "U" 100 450 50 H V L CNN
+F1 "UCC3808D" 100 350 50 H V L CNN
+F2 "Housings_SOIC:SOIC-8_3.9x4.9mm_Pitch1.27mm" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ SOIC*3.9x4.9mm*Pitch1.27mm*
+$ENDFPLIST
+DRAW
+S -300 -300 300 300 0 1 10 f
+X COMP 1 -400 200 100 R 50 50 1 1 P
+X FB 2 -400 100 100 R 50 50 1 1 I
+X CS 3 -400 0 100 R 50 50 1 1 I
+X RC 4 -400 -200 100 R 50 50 1 1 P
+X GND 5 0 -400 100 U 50 50 1 1 W
+X OUTB 6 400 -100 100 L 50 50 1 1 O
+X OUTA 7 400 100 100 L 50 50 1 1 O
+X VDD 8 0 400 100 D 50 50 1 1 W
+ENDDRAW
+ENDDEF
+#
+# UCC3808N
+#
+DEF UCC3808N U 0 20 Y Y 1 F N
+F0 "U" 100 450 50 H V L CNN
+F1 "UCC3808N" 100 350 50 H V L CNN
+F2 "Housings_DIP:DIP-8_W7.62mm" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ DIP*W7.62mm*
+$ENDFPLIST
+DRAW
+S -300 -300 300 300 0 1 10 f
+X OUTA 1 400 100 100 L 50 50 1 1 O
+X VDD 2 0 400 100 D 50 50 1 1 W
+X COMP 3 -400 200 100 R 50 50 1 1 P
+X FB 4 -400 100 100 R 50 50 1 1 I
+X CS 5 -400 0 100 R 50 50 1 1 I
+X RC 6 -400 -200 100 R 50 50 1 1 P
+X GND 7 0 -400 100 U 50 50 1 1 W
+X OUTB 8 400 -100 100 L 50 50 1 1 O
+ENDDRAW
+ENDDEF
+#
 # VIPer22ADIP-E
 #
 DEF VIPer22ADIP-E U 0 40 Y Y 1 F N