Version 4 SHEET 1 1316 680 WIRE 64 32 -176 32 WIRE 144 32 64 32 WIRE 64 64 64 32 WIRE 144 64 144 32 WIRE -176 128 -176 32 WIRE -16 128 -80 128 WIRE -80 160 -80 128 WIRE 64 160 64 144 WIRE 96 160 64 160 WIRE 64 208 64 160 WIRE 144 208 144 144 WIRE 96 224 96 160 WIRE -16 272 -16 128 WIRE 96 272 -16 272 FLAG -80 240 0 FLAG 144 288 0 FLAG -176 208 0 FLAG 64 208 0 SYMBOL sw 144 192 R0 WINDOW 3 24 44 Left 0 SYMATTR InstName S1 SYMATTR Value "" SYMATTR SpiceModel VCSwitch SYMBOL voltage -80 144 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 WINDOW 3 -59 145 Left 0 SYMATTR InstName V1 SYMATTR Value SINE(0 3 2k) SYMBOL voltage -176 112 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V2 SYMATTR Value 5 SYMBOL res 128 48 R0 SYMATTR InstName R2 SYMATTR Value 100 SYMBOL res 80 160 R180 WINDOW 0 36 76 Left 0 WINDOW 3 36 40 Left 0 SYMATTR InstName R1 SYMATTR Value 1k TEXT 264 152 Left 0 !.tran 0 1m 0 1u TEXT 256 56 Left 0 !.model VCSwitch SW(Ron=.1 Roff=1G Vt=1 Vh=0.5) TEXT 536 256 Center 0 ;Switch toggles at instantaneous values of 0.5 and 1.5 volts\n(due to the 0.5 V hyseresis)