Version 4 SHEET 1 5945676 13421556 WIRE 1776 -496 1648 -496 WIRE 2192 -496 1776 -496 WIRE 2608 -496 2192 -496 WIRE 3024 -496 2608 -496 WIRE 1648 -480 1648 -496 WIRE 1776 -432 1776 -496 WIRE 1888 -432 1776 -432 WIRE 2096 -432 1968 -432 WIRE 2128 -432 2096 -432 WIRE 2192 -432 2192 -496 WIRE 2304 -432 2192 -432 WIRE 2512 -432 2384 -432 WIRE 2544 -432 2512 -432 WIRE 2608 -432 2608 -496 WIRE 2704 -432 2608 -432 WIRE 2896 -432 2784 -432 WIRE 2928 -432 2896 -432 WIRE 3024 -432 3024 -496 WIRE 3136 -432 3024 -432 WIRE 3344 -432 3216 -432 WIRE 3376 -432 3344 -432 WIRE 1776 -416 1776 -432 WIRE 2096 -416 2096 -432 WIRE 2192 -416 2192 -432 WIRE 2512 -416 2512 -432 WIRE 2608 -416 2608 -432 WIRE 2896 -416 2896 -432 WIRE 3024 -416 3024 -432 WIRE 3344 -416 3344 -432 WIRE 1648 -368 1648 -400 WIRE 1776 -320 1776 -352 WIRE 1904 -320 1776 -320 WIRE 2096 -320 2096 -352 WIRE 2096 -320 1968 -320 WIRE 2192 -320 2192 -352 WIRE 2320 -320 2192 -320 WIRE 2512 -320 2512 -352 WIRE 2512 -320 2384 -320 WIRE 2608 -320 2608 -352 WIRE 2720 -320 2608 -320 WIRE 2896 -320 2896 -352 WIRE 2896 -320 2784 -320 WIRE 3024 -320 3024 -352 WIRE 3152 -320 3024 -320 WIRE 3344 -320 3344 -352 WIRE 3344 -320 3216 -320 WIRE 1776 -240 1776 -320 WIRE 1808 -240 1776 -240 WIRE 1936 -240 1888 -240 WIRE 1984 -240 1936 -240 WIRE 2096 -240 2096 -320 WIRE 2096 -240 2064 -240 WIRE 2192 -240 2192 -320 WIRE 2224 -240 2192 -240 WIRE 2352 -240 2304 -240 WIRE 2400 -240 2352 -240 WIRE 2512 -240 2512 -320 WIRE 2512 -240 2480 -240 WIRE 2608 -240 2608 -320 WIRE 2640 -240 2608 -240 WIRE 2752 -240 2720 -240 WIRE 2784 -240 2752 -240 WIRE 2896 -240 2896 -320 WIRE 2896 -240 2864 -240 WIRE 3024 -240 3024 -320 WIRE 3040 -240 3024 -240 WIRE 3184 -240 3120 -240 WIRE 3232 -240 3184 -240 WIRE 3344 -240 3344 -320 WIRE 3344 -240 3312 -240 WIRE 1936 -192 1936 -240 WIRE 2352 -192 2352 -240 WIRE 2752 -192 2752 -240 WIRE 3184 -192 3184 -240 FLAG 1648 -368 0 FLAG 1936 -192 0 FLAG 2128 -432 W FLAG 2352 -192 0 FLAG 2544 -432 X FLAG 2752 -192 0 FLAG 2928 -432 Y FLAG 3184 -192 0 FLAG 3376 -432 Z SYMBOL voltage 1648 -496 R0 SYMATTR InstName V1 SYMATTR Value AC 1. SYMBOL res 1984 -448 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value {6*R} SYMBOL cap 2080 -416 R0 SYMATTR InstName C2 SYMATTR Value {C} SYMBOL cap 1760 -416 R0 SYMATTR InstName C1 SYMATTR Value {C} SYMBOL cap 1968 -336 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C3 SYMATTR Value {C} SYMBOL res 1904 -256 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value {w*R} SYMBOL res 2080 -256 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value {(1-w)*R} SYMBOL res 2400 -448 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R4 SYMATTR Value {6*R} SYMBOL cap 2176 -416 R0 SYMATTR InstName C4 SYMATTR Value {C} SYMBOL cap 2496 -416 R0 SYMATTR InstName C5 SYMATTR Value {C} SYMBOL cap 2384 -336 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C6 SYMATTR Value {C} SYMBOL res 2320 -256 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R5 SYMATTR Value {x*R} SYMBOL res 2496 -256 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value {(1-x)*R} SYMBOL res 2800 -448 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R7 SYMATTR Value {6*R} SYMBOL cap 2592 -416 R0 SYMATTR InstName C7 SYMATTR Value {C} SYMBOL cap 2880 -416 R0 SYMATTR InstName C8 SYMATTR Value {C} SYMBOL cap 2784 -336 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C9 SYMATTR Value {C} SYMBOL res 2736 -256 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R8 SYMATTR Value {y*R} SYMBOL res 2880 -256 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R9 SYMATTR Value {(1-y)*R} SYMBOL res 3232 -448 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R10 SYMATTR Value {6*R} SYMBOL cap 3008 -416 R0 SYMATTR InstName C10 SYMATTR Value {C} SYMBOL cap 3328 -416 R0 SYMATTR InstName C11 SYMATTR Value {C} SYMBOL cap 3216 -336 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C12 SYMATTR Value {C} SYMBOL res 3136 -256 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R11 SYMATTR Value {z*R} SYMBOL res 3328 -256 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R12 SYMATTR Value {(1-z)*R} TEXT 2976 -144 Left 2 !.ac oct 500 100 10k TEXT 2000 -144 Left 2 !.params R=10K C=.1µ TEXT 2456 -512 Bottom 2 ;From Horowitz and Hill, The Art of Electronics, 2nd Ed, Cambridge, p. 281 TEXT 2288 -144 Left 2 !.params w=.0005 x=.005 y=.05 z=.5 TEXT 2416 -104 Top 1 ;This example schematic is supplied for informational/educational purposes only.