Version 4
SHEET 1 880 680
WIRE 80 -16 -48 -16
WIRE 192 -16 80 -16
WIRE 256 -16 192 -16
WIRE 480 -16 336 -16
WIRE 576 -16 480 -16
WIRE 688 -16 656 -16
WIRE 480 0 480 -16
WIRE 80 48 80 -16
WIRE -48 64 -48 -16
WIRE 192 64 192 -16
WIRE 480 96 480 0
WIRE -48 224 -48 144
WIRE 80 224 80 128
WIRE 80 224 -48 224
WIRE 192 224 192 144
WIRE 192 224 80 224
WIRE 336 224 192 224
WIRE 480 224 480 176
WIRE 480 224 336 224
WIRE 688 224 688 -16
WIRE 688 224 480 224
WIRE 336 256 336 224
FLAG 336 256 0
FLAG 64 0 va
FLAG 480 0 vb
SYMBOL res -64 48 R0
SYMATTR InstName R1
SYMATTR Value 5
SYMBOL res 176 48 R0
SYMATTR InstName R2
SYMATTR Value 8
SYMBOL res 352 -32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 6
SYMBOL res 464 80 R0
SYMATTR InstName R4
SYMATTR Value 12
SYMBOL current 80 128 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 0 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I1
SYMATTR Value 2
SYMBOL current 576 -16 R270
WINDOW 0 32 40 VTop 2
WINDOW 3 -32 40 VBottom 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I2
SYMATTR Value 2
TEXT 336 112 Left 2 !.op