Version 4
SHEET 1 1300 824
WIRE 864 0 368 0
WIRE 400 80 -176 80
WIRE 912 80 688 80
WIRE -176 96 -176 80
WIRE 912 96 912 80
WIRE 368 144 368 0
WIRE 400 144 368 144
WIRE 784 144 688 144
WIRE -176 192 -176 176
WIRE 912 192 912 176
WIRE 400 208 96 208
WIRE 720 208 688 208
WIRE 96 224 96 208
WIRE 400 272 368 272
WIRE 720 272 688 272
WIRE 864 304 864 0
WIRE 96 320 96 304
WIRE 400 336 368 336
WIRE 704 336 688 336
WIRE 784 368 784 144
WIRE 400 400 368 400
WIRE 704 400 688 400
WIRE -48 432 -48 416
WIRE 64 432 64 416
WIRE 192 432 192 416
WIRE 400 464 384 464
WIRE 784 464 784 448
WIRE 784 464 688 464
WIRE 864 464 864 384
WIRE 864 464 784 464
WIRE 912 464 864 464
WIRE -48 528 -48 512
WIRE 64 528 64 512
WIRE 192 528 192 512
FLAG 192 528 0
FLAG 704 400 +V
FLAG 192 416 +V
FLAG 384 464 -V
FLAG 64 528 0
FLAG 64 416 -V
FLAG 704 336 0
FLAG 368 336 0
FLAG -48 528 0
FLAG -176 192 0
FLAG 912 464 OUT
FLAG 912 192 0
FLAG 96 320 0
FLAG -176 80 IN1
FLAG 912 80 IN2
FLAG 96 208 FADE
FLAG 720 208 2.5
FLAG -48 416 2.5
SYMBOL voltage 192 416 R0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL voltage 64 416 R0
SYMATTR InstName V2
SYMATTR Value -5
SYMBOL opamps\\LT1251 544 176 R0
SYMATTR InstName U1
SYMBOL res 768 352 R0
SYMATTR InstName R1
SYMATTR Value 1.5K
SYMBOL res 848 288 R0
SYMATTR InstName R2
SYMATTR Value 1.5K
SYMBOL voltage -48 416 R0
SYMATTR InstName V3
SYMATTR Value 2.5
SYMBOL voltage -176 80 R0
WINDOW 0 24 24 Left 2
WINDOW 3 22 100 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V4
SYMATTR Value SINE(0 1 1Meg)
SYMBOL voltage 912 80 R0
WINDOW 0 24 24 Left 2
WINDOW 3 22 100 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V5
SYMATTR Value PULSE(-1 1 0 1n 1n .5u 1u)
SYMBOL voltage 96 208 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V6
SYMATTR Value PWL(0 0 50u 2.5)
TEXT 776 544 Left 2 !.tran 50u
TEXT 544 -16 Bottom 2 ;Two-Input Video Fader