Version 4
SHEET 1 1064 680
WIRE 240 -16 16 -16
WIRE 464 -16 240 -16
WIRE 16 48 16 -16
WIRE 464 48 464 -16
WIRE -32 64 -384 64
WIRE 880 64 512 64
WIRE -384 96 -384 64
WIRE 880 96 880 64
WIRE -32 112 -64 112
WIRE 544 112 512 112
WIRE 16 208 16 128
WIRE 240 208 240 -16
WIRE 464 208 464 128
WIRE -384 224 -384 176
WIRE 880 224 880 176
WIRE 16 336 16 288
WIRE 240 336 240 272
WIRE 464 336 464 288
FLAG 16 336 0
FLAG 240 336 0
FLAG 464 336 0
FLAG -384 224 0
FLAG 880 224 0
FLAG -64 112 0
FLAG 544 112 0
SYMBOL voltage 16 192 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 1800
SYMBOL sw 16 144 M180
SYMATTR InstName S1
SYMBOL sw 464 144 R180
SYMATTR InstName S2
SYMBOL cap 224 208 R0
SYMATTR InstName C1
SYMATTR Value 8800µ
SYMBOL res 448 192 R0
SYMATTR InstName R1
SYMATTR Value 70
SYMBOL voltage -384 80 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PULSE(0 1 1m 1µ 1µ 1s)
SYMBOL voltage 880 80 M0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value PULSE(0 1 1.5 1µ 1µ 10)
TEXT -48 -104 Left 2 !.model SW VSWITCH Roff=1e9 Ron=1m Voff=0.0 Von=1.0