diff --git a/Tarea Circuitos Simulados/invsumamp.asc b/Tarea Circuitos Simulados/invsumamp.asc
new file mode 100644
index 0000000000000000000000000000000000000000..bbbeda694f7db892781a33e62435d9d8353273c0
--- /dev/null
+++ b/Tarea Circuitos Simulados/invsumamp.asc	
@@ -0,0 +1,85 @@
+Version 4
+SHEET 1 880 680
+WIRE 96 -16 -64 -16
+WIRE 208 -16 176 -16
+WIRE -64 80 -64 64
+WIRE 96 80 -16 80
+WIRE 208 80 208 -16
+WIRE 208 80 176 80
+WIRE 288 80 208 80
+WIRE -208 96 -208 80
+WIRE -144 96 -208 96
+WIRE -144 112 -144 96
+WIRE -208 144 -208 96
+WIRE -16 176 -16 160
+WIRE 96 176 32 176
+WIRE 208 176 208 80
+WIRE 208 176 176 176
+WIRE 240 176 208 176
+WIRE 368 192 368 80
+WIRE 368 192 304 192
+WIRE 464 192 368 192
+WIRE 240 208 208 208
+WIRE 32 272 32 256
+WIRE 208 288 208 208
+FLAG -64 80 0
+FLAG -16 176 0
+FLAG 32 272 0
+FLAG -144 112 0
+FLAG 208 288 0
+FLAG 464 192 Vout
+FLAG -208 0 Vs+
+FLAG 272 160 Vs+
+FLAG -208 224 Vs-
+FLAG 272 224 Vs-
+SYMBOL OpAmps\\OP77 272 128 R0
+SYMATTR InstName U1
+SYMBOL res 192 160 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R1
+SYMATTR Value 50k
+SYMBOL res 192 64 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R2
+SYMATTR Value 10k
+SYMBOL res 192 -32 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R3
+SYMATTR Value 20k
+SYMBOL res 384 64 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R4
+SYMATTR Value 100k
+SYMBOL voltage -16 64 R0
+WINDOW 3 24 96 Left 1
+WINDOW 123 0 0 Left 0
+WINDOW 39 0 0 Left 0
+SYMATTR InstName V2
+SYMATTR Value SINE(0 200m 50 0 0 0 10)
+SYMBOL voltage 32 160 R0
+WINDOW 3 24 96 Left 1
+WINDOW 123 0 0 Left 0
+WINDOW 39 0 0 Left 0
+SYMATTR InstName V3
+SYMATTR Value SINE(0 300m 50 0 0 0 10)
+SYMBOL voltage -208 -16 R0
+WINDOW 123 0 0 Left 0
+WINDOW 39 0 0 Left 0
+SYMATTR InstName V4
+SYMATTR Value 15
+SYMBOL voltage -208 128 R0
+WINDOW 123 0 0 Left 0
+WINDOW 39 0 0 Left 0
+SYMATTR InstName V5
+SYMATTR Value 15
+SYMBOL voltage -64 -32 R0
+WINDOW 3 24 96 Left 1
+WINDOW 123 0 0 Left 0
+WINDOW 39 0 0 Left 0
+SYMATTR InstName V1
+SYMATTR Value SINE(0 100m 50 0 0 0 10)
+TEXT -242 312 Left 2 !.tran 0.06