Version 4
SHEET 1 1460 724
WIRE 1136 64 992 64
WIRE 1136 96 1136 64
WIRE 96 144 48 144
WIRE 224 144 160 144
WIRE 352 144 304 144
WIRE 544 144 352 144
WIRE 736 144 544 144
WIRE 992 144 992 64
WIRE 992 144 736 144
WIRE 1088 144 992 144
WIRE 1296 144 1168 144
WIRE 544 160 544 144
WIRE 736 176 736 144
WIRE 352 256 352 144
WIRE 544 272 544 240
WIRE 544 272 512 272
WIRE 736 272 736 256
WIRE 736 272 688 272
WIRE 544 288 544 272
WIRE 736 288 736 272
WIRE 1296 288 1296 144
WIRE 48 304 48 144
WIRE 736 368 736 352
WIRE 48 640 48 384
WIRE 352 640 352 320
WIRE 352 640 48 640
WIRE 544 640 544 352
WIRE 544 640 352 640
WIRE 736 640 736 432
WIRE 736 640 544 640
WIRE 1296 640 1296 368
WIRE 1296 640 736 640
WIRE 352 704 352 640
FLAG 352 704 0
FLAG 512 272 x
FLAG 688 272 y
SYMBOL schottky 96 160 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMATTR Value BAT54
SYMBOL res 320 128 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL diode 528 288 R0
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL res 528 144 R0
SYMATTR InstName R2
SYMATTR Value 470
SYMBOL res 1280 272 R0
SYMATTR InstName R5
SYMATTR Value 630
SYMBOL pot 1072 160 R270
SYMATTR InstName U1
SYMATTR Value Rtot=10K wiper=.45
SYMBOL polcap 336 256 R0
WINDOW 3 24 56 Left 2
SYMATTR Value 4.7µ
SYMATTR InstName C1
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=16 Irms=0 Rser=4 Lser=0 mfg="AVX" pn="TAJA475M016" type="Tantalum"
SYMBOL res 720 160 R0
SYMATTR InstName R3
SYMATTR Value 220
SYMBOL diode 720 288 R0
SYMATTR InstName D3
SYMATTR Value 1N4148
SYMBOL diode 720 368 R0
SYMATTR InstName D4
SYMATTR Value 1N4148
SYMBOL voltage 48 288 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 1
TEXT 72 600 Left 2 !.dc V1 0 20 0.01