Version 4
SHEET 1 880 680
WIRE -1056 -16 -1216 -16
WIRE -816 -16 -976 -16
WIRE -816 16 -816 -16
WIRE -544 32 -816 -16
WIRE -1104 48 -816 -16
WIRE -1216 96 -1216 -16
WIRE -1104 144 -1104 128
WIRE -1104 144 -1136 144
WIRE -960 144 -1104 144
WIRE -816 144 -816 96
WIRE -816 144 -880 144
WIRE -768 144 -816 144
WIRE -544 144 -544 112
WIRE -544 144 -688 144
WIRE -1136 160 -1136 144
WIRE -1104 176 -1104 144
WIRE -544 176 -544 144
WIRE -816 192 -816 144
WIRE -1216 336 -1216 176
WIRE -816 336 -1104 256
WIRE -816 336 -544 256
WIRE -816 336 -816 272
WIRE -816 336 -1216 336
FLAG -1136 160 0
SYMBOL voltage -1216 80 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 30
SYMBOL res -960 -32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 50
SYMBOL res -800 112 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R2
SYMATTR Value 30
SYMBOL res -976 160 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R3
SYMATTR Value 15
SYMBOL res -784 160 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 20
SYMBOL voltage -816 288 R180
WINDOW 0 24 96 Left 2
WINDOW 3 24 16 Left 2
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 20
SYMBOL res -1120 32 R0
SYMATTR InstName R5
SYMATTR Value 20
SYMBOL res -1120 160 R0
SYMATTR InstName R6
SYMATTR Value 80
SYMBOL res -560 160 R0
SYMATTR InstName R7
SYMATTR Value 60
SYMBOL voltage -544 16 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value 12
TEXT -1250 346 Left 2 !.tran 1