Version 4
SHEET 1 880 680
WIRE 320 -32 304 -32
WIRE 80 0 -64 0
WIRE 224 0 160 0
WIRE 304 0 304 -32
WIRE -64 80 -64 0
WIRE 80 80 -64 80
WIRE 320 80 160 80
WIRE 80 160 -64 160
WIRE 320 160 160 160
WIRE 400 160 400 80
WIRE -64 240 -64 160
WIRE 80 240 -64 240
WIRE 80 368 -80 368
WIRE 160 368 160 240
WIRE -80 448 -80 368
WIRE 80 448 -80 448
WIRE 320 448 160 448
WIRE 400 448 400 160
WIRE 80 528 -80 528
WIRE 320 528 160 528
WIRE 400 528 400 448
WIRE -80 608 -80 528
WIRE 80 608 -80 608
WIRE 224 608 160 608
FLAG 400 -32 0
FLAG 304 608 0
FLAG 400 80 0
SYMBOL res -80 64 R0
SYMATTR InstName RPT
SYMATTR Value 200
SYMBOL res -96 432 R0
SYMATTR InstName RREF
SYMATTR Value 100
SYMBOL current 400 80 R90
WINDOW 0 -32 40 VBottom 2
WINDOW 3 32 40 VTop 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I1
SYMATTR Value 1nA
SYMBOL current 400 160 R90
WINDOW 0 -32 40 VBottom 2
WINDOW 3 32 40 VTop 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I2
SYMATTR Value 1nA
SYMBOL current 400 448 R90
WINDOW 0 -32 40 VBottom 2
WINDOW 3 32 40 VTop 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I3
SYMATTR Value 1nA
SYMBOL current 400 528 R90
WINDOW 0 -32 40 VBottom 2
WINDOW 3 32 40 VTop 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I4
SYMATTR Value 1nA
SYMBOL current 400 -32 R90
WINDOW 0 -32 40 VBottom 2
WINDOW 3 32 40 VTop 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I5
SYMATTR Value 100ľA
SYMBOL res 176 352 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName RL21
SYMATTR Value 1
SYMBOL res 176 224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 1
SYMBOL res 176 144 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 1
SYMBOL res 176 64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 1
SYMBOL res 176 -16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName RL1
SYMATTR Value 1
SYMBOL res 176 432 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName RL22
SYMATTR Value 1
SYMBOL res 176 512 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName RL23
SYMATTR Value 1
SYMBOL res 176 592 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName RL24
SYMATTR Value 1
SYMBOL res 320 592 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName ROFF2
SYMATTR Value 5000
SYMBOL res 320 -16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName ROFF1
SYMATTR Value 5000
TEXT -98 658 Left 2 !.tran 50ms