Version 4
SHEET 1 880 680
WIRE 128 -32 64 -32
WIRE 240 -32 128 -32
WIRE 240 0 240 -32
WIRE 240 112 240 80
WIRE 320 112 240 112
WIRE 384 112 320 112
WIRE 64 128 64 -32
WIRE 384 144 384 112
WIRE 240 176 240 112
WIRE 64 288 64 208
WIRE 208 288 64 288
WIRE 240 288 240 240
WIRE 240 288 208 288
WIRE 384 288 384 224
WIRE 384 288 240 288
WIRE 208 304 208 288
FLAG 208 304 0
FLAG 320 112 U_D1
FLAG 128 -32 U_Bat
SYMBOL voltage 64 112 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 24 44 Left 2
SYMATTR InstName V1
SYMATTR Value PWL(0 0 1.5 15)
SYMBOL res 224 -16 R0
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res 368 128 R0
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL diode 224 176 R0
SYMATTR InstName D1
SYMATTR Value 1N4148
TEXT 32 328 Left 2 !.tran 1.5