Version 4
SHEET 1 1680 680
WIRE 192 32 112 32
WIRE 608 32 512 32
WIRE 0 48 0 32
WIRE 704 48 704 32
WIRE 1216 48 1216 32
WIRE -432 64 -432 32
WIRE 192 64 192 32
WIRE 1120 64 1120 32
WIRE -432 128 -432 64
WIRE 0 128 0 48
WIRE 112 128 112 32
WIRE 608 128 608 32
WIRE 704 128 704 48
WIRE 1120 128 1120 64
WIRE 512 208 512 32
WIRE 1216 208 1216 48
WIRE -432 336 -432 208
WIRE 0 336 0 208
WIRE 0 336 -432 336
WIRE 112 336 112 208
WIRE 112 336 0 336
WIRE 192 336 192 144
WIRE 192 336 112 336
WIRE 512 336 512 288
WIRE 512 336 192 336
WIRE 608 336 608 208
WIRE 608 336 512 336
WIRE 704 336 704 208
WIRE 704 336 608 336
WIRE 1120 336 1120 208
WIRE 1120 336 704 336
WIRE 1216 336 1216 288
WIRE 1216 336 1120 336
WIRE 704 352 704 336
FLAG 704 352 0
FLAG 512 32 PhaseB
FLAG 192 32 PhaseA
FLAG 0 48 PA
FLAG 704 48 PB
FLAG -432 64 PWM
FLAG 1120 64 CHOPA
FLAG 1216 48 CHOPB
SYMBOL ind 176 48 R0
SYMATTR InstName StepperMotorPhaseA
SYMATTR Value 15m
SYMATTR SpiceLine Rser=4.2
SYMBOL voltage 0 112 R0
WINDOW 3 -385 61 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value PULSE(-60 60 0 1p 1p 3m 6m)
SYMATTR InstName V1
SYMBOL ind 496 192 R0
WINDOW 0 -238 60 Left 0
SYMATTR InstName StepperMotorPhaseB
SYMATTR Value 15m
SYMATTR SpiceLine Rser=4.2
SYMBOL voltage 704 112 R0
WINDOW 3 46 62 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value PULSE(-60 60 10m 1p 1p 3m 6m)
SYMATTR InstName V2
SYMBOL bv 112 112 R0
SYMATTR InstName B1
SYMATTR Value V=V(PA)*IF(V(CHOPA),1,V(PWM))
SYMBOL bv 608 112 R0
SYMATTR InstName B2
SYMATTR Value V=V(PB)*IF(V(CHOPB),1,V(PWM))
SYMBOL voltage 1120 112 R0
WINDOW 3 46 62 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value PULSE(0 1 12m 1p 1p 700u 3m)
SYMATTR InstName CHOPA
SYMBOL voltage -432 112 R0
WINDOW 3 -385 61 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value PULSE(0 1 0 1p 1p 10u 100u)
SYMATTR InstName PWM
SYMBOL voltage 1216 192 R0
WINDOW 3 46 62 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value PULSE(0 1 10m 1p 1p 700u 3m)
SYMATTR InstName CHOPB
TEXT -384 344 Left 0 !.tran 0 60m 40m 10u