Version 4
SHEET 1 2328 1460
WIRE 432 592 400 592
WIRE 592 592 432 592
WIRE 400 608 400 592
WIRE 592 640 592 592
WIRE 400 704 400 688
WIRE 32 736 0 736
WIRE 128 736 32 736
WIRE 288 736 208 736
WIRE 0 784 0 736
WIRE 288 800 288 736
WIRE 336 800 288 800
WIRE 592 800 592 720
WIRE 592 800 528 800
WIRE 624 800 592 800
WIRE 640 800 624 800
WIRE 0 896 0 864
WIRE 336 896 0 896
WIRE 592 896 528 896
WIRE 0 928 0 896
WIRE 592 928 592 896
FLAG 400 704 0
FLAG 592 928 0
FLAG 432 592 vcc
FLAG 0 928 0
FLAG 32 736 in
FLAG 624 800 out
SYMBOL voltage 400 592 R0
WINDOW 0 -13 58 Left 0
WINDOW 3 40 60 Left 0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL res 112 752 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R1
SYMATTR Value 330
SYMBOL voltage 0 768 R0
WINDOW 3 20 102 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value PWL(0 0 0.1u 34 20u 34 20.01u 0)
SYMATTR InstName V2
SYMBOL res 576 624 R0
WINDOW 0 -31 34 Left 0
WINDOW 3 -36 64 Left 0
SYMATTR InstName R2
SYMATTR Value 500
SYMBOL 4N35 432 848 R0
SYMATTR InstName U1
TEXT -8 688 Left 0 !.op
TEXT -8 664 Left 0 !.TEMP 27
TEXT -8 552 Left 0 ;4N35, Coupling Ratio Test Helmut Sennewald 4/08/2007\nCoupling ratio  max. 200%
TEXT -8 608 Left 0 !.tran 40u
TEXT -8 632 Left 0 !.options plotwinsize=0