Version 4 SHEET 1 1812 1620 WIRE 32 880 -400 880 WIRE -400 896 -400 880 WIRE 1408 896 1328 896 WIRE 1520 896 1408 896 WIRE 1632 896 1584 896 WIRE 368 912 176 912 WIRE 848 912 432 912 WIRE 1328 912 1328 896 WIRE 432 928 432 912 WIRE 1056 928 976 928 WIRE 1136 928 1056 928 WIRE 1280 928 1136 928 WIRE 368 944 368 912 WIRE 384 944 368 944 WIRE 848 944 816 944 WIRE 1136 944 1136 928 WIRE 1280 976 1264 976 WIRE -400 992 -400 976 WIRE 384 992 368 992 WIRE 1328 1008 1328 992 WIRE 368 1024 368 992 WIRE 432 1024 432 1008 WIRE 1136 1040 1136 1024 WIRE 1136 1120 1136 1104 WIRE 1056 1184 1056 928 WIRE 1056 1184 1024 1184 WIRE 816 1216 816 944 WIRE 880 1216 816 1216 FLAG -400 992 0 FLAG -400 880 IN FLAG 1264 976 0 FLAG 1328 1008 0 FLAG 368 1024 0 FLAG 432 1024 0 FLAG 1632 896 out FLAG 1408 896 signal FLAG 1136 1120 0 SYMBOL SPECIALFUNCTIONS\\MODULATE 32 880 R0 WINDOW 0 37 -55 Left 2 WINDOW 3 57 119 Center 2 SYMATTR InstName A1 SYMATTR Value mark=1.1K space=.9K SYMBOL SPECIALFUNCTIONS\\MODULATE 1024 1184 M0 WINDOW 0 55 -43 Right 2 WINDOW 3 57 119 Center 2 SYMATTR InstName A3 SYMATTR Value mark=1.1K space=.9K SYMBOL DIGITAL\\SCHMTBUF 1520 832 R0 WINDOW 0 1 33 Left 2 WINDOW 3 12 105 Center 2 SYMATTR InstName A4 SYMATTR Value Vt=.5 Vh=100m SYMBOL E 1328 896 R0 WINDOW 0 32 28 Left 2 SYMATTR InstName E2 SYMATTR Value Laplace=1./(1+.0007*s)**3 SYMBOL e 432 912 R0 WINDOW 3 -25 150 Center 2 WINDOW 39 -31 183 Center 2 SYMATTR Value Laplace={w0/Q}*s /(s*s + {w0/Q}*s + {w0*w0}) SYMATTR SpiceLine window=.1 nfft=4096 SYMATTR InstName E1 SYMBOL BV -400 880 R0 SYMATTR InstName B1 SYMATTR Value V=rand(time*250) >= .5 SYMBOL DIGITAL\\PHIDET 880 928 R0 WINDOW 3 -16 72 Left 2 WINDOW 39 -28 140 Left 2 WINDOW 40 -16 176 Left 2 WINDOW 123 -16 104 Left 2 SYMATTR Value Iout=15u SYMATTR SpiceLine Vhigh=2.5 SYMATTR SpiceLine2 Ref=0 SYMATTR Value2 Vlow=-.5 SYMATTR InstName A5 SYMBOL cap 1120 1040 R0 SYMATTR InstName C2 SYMATTR Value .0025µ SYMBOL res 1120 928 R0 SYMATTR InstName R1 SYMATTR Value 1K TEXT -224 1240 Left 2 !.tran 0 300m 10m TEXT -224 1200 Left 2 !.params w0=2*pi*1K Q=5 TEXT -224 1280 Left 2 !;.options baudrate=250 delay=1.4m TEXT 568 1336 Top 1 ;This example schematic is supplied for informational/educational purposes only.