Version 4
SHEET 1 1644 680
WIRE 512 -224 -304 -224
WIRE 1200 -224 512 -224
WIRE -176 -128 -256 -128
WIRE -48 -128 -96 -128
WIRE -240 -48 -256 -48
WIRE -80 -48 -160 -48
WIRE -48 -48 -80 -48
WIRE 416 -48 400 -48
WIRE 512 -48 512 -224
WIRE 512 -48 496 -48
WIRE 1200 0 1200 -224
WIRE -624 32 -928 32
WIRE -608 32 -624 32
WIRE -304 32 -304 -224
WIRE -304 32 -352 32
WIRE -48 32 -304 32
WIRE -928 48 -928 32
WIRE -304 64 -304 32
WIRE -48 112 -64 112
WIRE -928 144 -928 128
WIRE -304 144 -304 128
WIRE -480 160 -480 128
WIRE 576 272 400 272
WIRE 944 272 656 272
WIRE 1056 272 1024 272
WIRE 1200 352 1200 80
WIRE 1200 352 400 352
WIRE -624 400 -624 32
WIRE 464 432 400 432
WIRE -624 496 -624 480
WIRE 464 496 464 432
WIRE 464 496 -624 496
WIRE -624 512 -624 496
WIRE -624 608 -624 592
FLAG -64 112 0
FLAG -80 -48 OUT
FLAG -928 144 0
FLAG -304 144 0
FLAG -480 160 0
FLAG -928 32 IN
FLAG -256 -128 0
FLAG -256 -48 0
FLAG -624 608 0
FLAG 1056 272 0
SYMBOL VOLTAGE -928 32 R0
WINDOW 123 24 117 Left 2
SYMATTR Value PWL(20u 0 25u 7.5)
SYMATTR InstName V1
SYMATTR SpiceLine Rser=10m
SYMBOL cap -320 64 R0
SYMATTR InstName C1
SYMATTR Value 100µ
SYMBOL PowerProducts\\LT1086-5 -480 32 R0
SYMATTR InstName U1
SYMBOL VOLTAGE -80 -128 R90
WINDOW 123 53 56 VTop 2
WINDOW 0 -32 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName V2
SYMATTR Value 3
SYMATTR SpiceLine Rser=10m
SYMBOL res -640 384 R0
SYMATTR InstName R1
SYMATTR Value 51K
SYMBOL res -640 496 R0
SYMATTR InstName R2
SYMATTR Value 10K
SYMBOL res 512 -64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 10K
SYMBOL res 1184 -16 R0
SYMATTR InstName R4
SYMATTR Value 10K
SYMBOL VOLTAGE 560 272 R270
WINDOW 123 -53 56 VBottom 2
WINDOW 0 32 56 VTop 2
WINDOW 3 -32 56 VBottom 2
SYMATTR InstName V3
SYMATTR Value PULSE(0 2 0 1u 1u 20m 40m 6)
SYMATTR SpiceLine Rser=0.1
SYMBOL VOLTAGE 928 272 R270
WINDOW 123 -53 56 VBottom 2
WINDOW 0 32 56 VTop 2
WINDOW 3 -32 56 VBottom 2
SYMATTR InstName V4
SYMATTR Value PULSE(0 2 0.4 1u 1u 20m 40m)
SYMATTR SpiceLine Rser=0.1
SYMBOL LTC693 176 160 R0
SYMATTR InstName U2
SYMBOL res -144 -64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName Rload
SYMATTR Value 100
TEXT 584 488 Left 2 !.tran 0.7