Version 4
SHEET 1 968 680
WIRE -304 112 -432 112
WIRE -144 112 -240 112
WIRE -64 112 -144 112
WIRE 32 112 -64 112
WIRE 96 112 32 112
WIRE 432 112 352 112
WIRE 576 112 432 112
WIRE 672 112 576 112
WIRE 736 112 672 112
WIRE -144 128 -144 112
WIRE -64 128 -64 112
WIRE 32 128 32 112
WIRE 432 128 432 112
WIRE 576 128 576 112
WIRE 672 128 672 112
WIRE -432 144 -432 112
WIRE 224 240 224 208
WIRE 432 240 432 208
WIRE 432 240 224 240
WIRE -432 256 -432 224
WIRE -144 256 -144 192
WIRE -64 256 -64 192
WIRE 32 256 32 192
WIRE 224 256 224 240
WIRE 432 256 432 240
WIRE 576 256 576 192
WIRE 672 256 672 192
WIRE 432 368 432 336
FLAG -144 256 0
FLAG -64 256 0
FLAG 32 256 0
FLAG 432 368 0
FLAG -432 256 0
FLAG 576 256 0
FLAG 672 256 0
FLAG -432 112 Vbat
IOPIN -432 112 In
FLAG 736 112 +Vcc
IOPIN 736 112 Out
FLAG 224 320 0
SYMBOL PowerProducts\\LT1117 224 112 R0
SYMATTR InstName U1
SYMBOL res 416 240 R0
SYMATTR InstName R1
SYMATTR Value {R1VAR}
SYMBOL res 416 112 R0
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL polcap 16 128 R0
SYMATTR InstName C2
SYMATTR Value 1
SYMBOL cap -80 128 R0
SYMATTR InstName C3
SYMATTR Value 100n
SYMBOL zener -128 192 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
SYMATTR Value BZX84C12L
SYMBOL diode -304 128 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 -45 32 VTop 2
SYMATTR InstName D1
SYMATTR Value 1N914
SYMBOL voltage -432 128 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 6.5
SYMBOL polcap 560 128 R0
SYMATTR InstName C4
SYMATTR Value 1
SYMBOL cap 656 128 R0
SYMATTR InstName C5
SYMATTR Value 100n
SYMBOL cap 208 256 R0
SYMATTR InstName C1
SYMATTR Value 10n
TEXT -488 448 Left 2 ;.MODEL 1N914 D ( IS=76.9p RS=42.0m BV=100 IBV=5.00u CJO=39.8p  M=0.333 N=1.45 TT=4.32u )
TEXT 512 352 Left 2 ;Vout = 1.25V*(1+ R1/R2)
TEXT -488 488 Left 2 !.tran 10ms
TEXT -240 296 Left 1 ;Tcnicament millor P6KE12A
TEXT 416 32 Left 2 !.step param R1VAR list 1 10k 30k 50k 70k