Version 4 SHEET 1 1640 1188 WIRE -1040 272 -1040 208 WIRE -1040 400 -1040 352 WIRE -1040 848 -1072 848 WIRE -1040 896 -1040 848 WIRE -1040 944 -1040 896 WIRE -1040 1072 -1040 1024 WIRE -768 288 -768 224 WIRE -768 400 -768 368 WIRE -752 896 -1040 896 WIRE -752 960 -752 896 WIRE -752 1072 -752 1008 WIRE -704 944 -704 896 WIRE -704 1072 -704 1024 WIRE -576 224 -768 224 WIRE -576 288 -576 224 WIRE -576 400 -576 336 WIRE -576 896 -704 896 WIRE -576 944 -576 896 WIRE -576 1072 -576 1024 WIRE -528 272 -528 224 WIRE -528 400 -528 352 WIRE -512 1008 -528 1008 WIRE -512 1072 -512 1008 WIRE -448 960 -528 960 WIRE -448 1120 -448 960 WIRE -400 224 -528 224 WIRE -400 272 -400 224 WIRE -400 400 -400 352 WIRE -368 896 -576 896 WIRE -368 896 -368 688 WIRE -368 976 -368 896 WIRE -368 1072 -368 1040 WIRE -336 336 -352 336 WIRE -336 400 -336 336 WIRE -272 288 -352 288 WIRE -272 448 -272 288 WIRE -272 688 -368 688 WIRE -272 784 -272 736 WIRE -272 896 -368 896 WIRE -224 672 -224 640 WIRE -224 784 -224 752 WIRE -192 224 -400 224 WIRE -192 224 -192 16 WIRE -192 304 -192 224 WIRE -192 400 -192 368 WIRE -144 880 -208 880 WIRE -144 1120 -448 1120 WIRE -144 1120 -144 880 WIRE -112 640 -224 640 WIRE -112 672 -112 640 WIRE -112 784 -112 752 WIRE -96 16 -192 16 WIRE -96 112 -96 64 WIRE -96 224 -192 224 WIRE -48 0 -48 -32 WIRE -48 112 -48 80 WIRE 32 208 -32 208 WIRE 32 448 -272 448 WIRE 32 448 32 208 WIRE 32 640 -112 640 WIRE 32 880 -144 880 WIRE 64 -32 -48 -32 WIRE 64 0 64 -32 WIRE 64 112 64 80 WIRE 208 -32 64 -32 WIRE 208 208 32 208 FLAG -368 1072 0 FLAG -704 1072 0 FLAG -752 1072 0 FLAG -1040 1072 0 FLAG -512 1072 0 FLAG -576 1072 0 FLAG 32 880 trig1 IOPIN 32 880 Out FLAG -272 784 0 FLAG -224 784 0 FLAG 32 640 ramp1 IOPIN 32 640 Out FLAG -1072 848 FM IOPIN -1072 848 In FLAG -112 784 0 FLAG -768 400 0 FLAG -192 400 0 FLAG -528 400 0 FLAG -576 400 0 FLAG -336 400 0 FLAG -400 400 0 FLAG 208 208 trig IOPIN 208 208 Out FLAG -96 112 0 FLAG -48 112 0 FLAG 208 -32 ramp IOPIN 208 -32 Out FLAG 64 112 0 FLAG -1040 400 0 FLAG -1040 208 PER IOPIN -1040 208 In SYMBOL Digital\\schmitt -272 832 R0 SYMATTR InstName A1 SYMATTR Value2 vt=0.5 vh=0.5 SYMATTR SpiceLine td=5n SYMBOL cap -384 976 R0 SYMATTR InstName C1 SYMATTR Value 0.02µ SYMBOL g -704 928 R0 SYMATTR InstName G1 SYMATTR Value 1m SYMBOL voltage -1040 928 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value SINE(1 .8 1k) SYMBOL sw -576 1040 R180 WINDOW 0 -47 105 Left 0 WINDOW 3 -57 5 Left 0 SYMATTR InstName S1 SYMATTR Value SW1 SYMBOL e -224 656 R0 SYMATTR InstName E1 SYMATTR Value 1 SYMBOL res -128 656 R0 SYMATTR InstName R1 SYMATTR Value 1G SYMBOL bv -768 272 R0 SYMATTR InstName B1 SYMATTR Value V=1/V(PER) SYMBOL Digital\\schmitt -96 160 R0 SYMATTR InstName A2 SYMATTR Value2 vt=0.5 vh=0.5 SYMATTR SpiceLine td=5n SYMBOL cap -208 304 R0 SYMATTR InstName C2 SYMATTR Value 0.02µ SYMBOL g -528 256 R0 SYMATTR InstName G2 SYMATTR Value 1m SYMBOL sw -400 368 R180 WINDOW 0 -47 105 Left 0 WINDOW 3 -57 5 Left 0 SYMATTR InstName S2 SYMATTR Value SW1 SYMBOL e -48 -16 R0 SYMATTR InstName E2 SYMATTR Value 1 SYMBOL res 48 -16 R0 SYMATTR InstName R2 SYMATTR Value 1G SYMBOL voltage -1040 256 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V2 SYMATTR Value SINE(1 .8 1k) TEXT -944 -280 Left 0 !.tran 0 5000u 0 .1u TEXT -944 -248 Left 0 !.options plotwinsize=0 TEXT -792 608 Left 0 ;Ramp Oscillator With FM-Input TEXT -792 648 Left 0 ;Freq = V(FM)*1000*value(C1) TEXT -944 -200 Left 0 !.model SW1 SW(Ron=.1 Roff=01G Vt=0.5 Vser=-0.003) TEXT -808 -64 Left 0 ;Ramp Oscillator With PERIOD-Input TEXT -808 -24 Left 0 ;Time Period = V(PER)/1000*value(C1) TEXT -936 -352 Left 0 ;Be carefully with the Vser=-0.003.\nRon * Imax will reduce it. RECTANGLE Normal -32 1184 -816 576 RECTANGLE Normal 144 512 -832 -112