Version 4
SHEET 1 880 680
WIRE 160 -96 -64 -96
WIRE 160 -16 160 -96
WIRE 112 0 48 0
WIRE 160 128 160 80
WIRE 432 128 160 128
WIRE -64 144 -64 -96
WIRE 160 160 160 128
WIRE 432 160 432 128
WIRE 48 240 48 0
WIRE 112 240 48 240
WIRE 48 256 48 240
WIRE 432 288 432 240
WIRE 48 352 48 336
WIRE 432 352 432 288
WIRE -64 480 -64 224
WIRE 48 480 48 432
WIRE 48 480 -64 480
WIRE 160 480 160 256
WIRE 160 480 48 480
WIRE 432 480 432 416
WIRE 432 480 160 480
WIRE -64 496 -64 480
FLAG -64 496 0
FLAG 432 128 Vout
FLAG 432 288 Vchg
FLAG 48 0 Vin
SYMBOL Misc\\battery -64 128 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL Misc\\signal 48 336 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value PULSE(0.2 4.8 0 20n 20n 10u 20u)
SYMBOL res 416 144 R0
SYMATTR InstName R2
SYMATTR Value 1
SYMBOL cap 416 352 R0
SYMATTR InstName C1
SYMATTR Value 1u
SYMBOL res 32 240 R0
SYMATTR InstName R1
SYMATTR Value 50
SYMBOL Misc\\BSS138ztx 112 160 R0
SYMATTR InstName U1
SYMBOL Misc\\BSS84ztx 112 80 M180
SYMATTR InstName U2
TEXT -32 504 Left 2 !.tran 100u