Version 4
SHEET 1 1332 680
WIRE -128 -48 -208 -48
WIRE 96 -48 -48 -48
WIRE 176 -48 96 -48
WIRE 416 -48 272 -48
WIRE 592 -48 416 -48
WIRE 816 -48 592 -48
WIRE 912 -48 816 -48
WIRE 1056 -48 912 -48
WIRE 96 -32 96 -48
WIRE 1056 -32 1056 -48
WIRE -208 -16 -208 -48
WIRE 416 -16 416 -48
WIRE 592 0 592 -48
WIRE 816 0 816 -48
WIRE 192 48 192 0
WIRE 208 48 192 48
WIRE 96 64 96 48
WIRE 192 64 192 48
WIRE 192 64 96 64
WIRE 304 64 288 64
WIRE 416 64 416 48
WIRE 416 64 368 64
WIRE 96 80 96 64
WIRE 416 96 416 64
WIRE 592 112 592 80
WIRE 592 112 448 112
WIRE 176 128 160 128
WIRE 224 128 176 128
WIRE 352 128 304 128
WIRE 384 128 352 128
WIRE 1056 128 1056 48
WIRE -208 144 -208 48
WIRE 176 144 176 128
WIRE 544 144 448 144
WIRE 640 144 544 144
WIRE 816 144 816 80
WIRE 816 144 720 144
WIRE 592 160 592 112
WIRE 816 160 816 144
WIRE 352 224 352 128
WIRE 448 224 352 224
WIRE 544 224 544 144
WIRE 544 224 528 224
WIRE -208 256 -208 224
WIRE 96 256 96 176
WIRE 96 256 -208 256
WIRE 176 256 176 224
WIRE 176 256 96 256
WIRE 416 256 416 160
WIRE 416 256 176 256
WIRE 592 256 592 240
WIRE 592 256 416 256
WIRE 816 256 816 224
WIRE 816 256 592 256
WIRE 1056 256 1056 208
WIRE 1056 256 816 256
WIRE 96 272 96 256
FLAG -416 240 0
FLAG -416 160 Vin
FLAG 96 272 0
FLAG 288 64 0
FLAG 912 -48 Vbat
FLAG 208 48 Vg
SYMBOL voltage -416 144 R0
SYMATTR InstName V1
SYMATTR Value sine(0 20 50)
SYMBOL bv -208 128 R0
SYMATTR InstName B1
SYMATTR Value V=abs(V(Vin))
SYMBOL pmos 272 0 M270
SYMATTR InstName M1
SYMATTR Value FDC5614P
SYMBOL res 80 -48 R0
SYMATTR InstName R1
SYMATTR Value 4k7
SYMBOL npn 160 80 M0
SYMATTR InstName Q1
SYMATTR Value bc547c
SYMBOL res 320 112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL res 160 240 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R3
SYMATTR Value 1k
SYMBOL schottky -192 48 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value RB218T-30
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 400 -16 R0
SYMATTR InstName D2
SYMATTR Value bat54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 576 -16 R0
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL res 576 144 R0
SYMATTR InstName R5
SYMATTR Value 10k
SYMBOL res 800 -16 R0
SYMATTR InstName R6
SYMATTR Value 1k
SYMBOL zener 832 224 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D3
SYMATTR Value TDZ6_2B
SYMBOL res 1040 -48 R0
SYMATTR InstName R7
SYMATTR Value 100m
SYMBOL voltage 1056 112 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value PULSE(11 14 0 2 0)
SYMBOL res 544 208 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 220k
SYMBOL Comparators\\LT1721 416 64 M0
SYMATTR InstName U2
SYMBOL res 736 128 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 10k
SYMBOL res -32 -64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R10
SYMATTR Value 1
SYMBOL cap 368 48 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 1µ
TEXT -520 320 Left 2 !.tran 2
TEXT 968 -136 Left 2 ;Battery
TEXT -520 -152 Left 2 ;trafo
RECTANGLE Normal 1328 288 960 -112 2
RECTANGLE Normal -528 288 16 -128 2