Version 4
SHEET 1 1304 2020
WIRE -432 -192 -448 -192
WIRE -416 -192 -432 -192
WIRE -336 -192 -352 -192
WIRE -320 -192 -336 -192
WIRE 16 -192 -32 -192
WIRE 144 -192 80 -192
WIRE -448 -160 -448 -192
WIRE -352 -160 -352 -192
WIRE 16 -112 0 -112
WIRE 48 -112 16 -112
WIRE 48 -80 48 -112
WIRE -32 -64 -32 -192
WIRE -32 -64 -192 -64
WIRE 16 -64 -32 -64
WIRE -448 -48 -448 -80
WIRE -352 -48 -352 -80
WIRE 144 -48 144 -192
WIRE 144 -48 80 -48
WIRE 224 -48 144 -48
WIRE 16 -32 -64 -32
WIRE 16 16 0 16
WIRE 48 16 48 -16
WIRE 48 16 16 16
WIRE -192 32 -192 -64
WIRE -64 48 -64 -32
WIRE 224 48 224 -48
WIRE -192 224 -192 112
WIRE 224 224 224 112
WIRE 224 224 -192 224
WIRE -192 272 -192 224
WIRE 224 272 224 224
WIRE -192 384 -192 336
WIRE 224 384 224 352
FLAG -64 48 0
FLAG -448 -48 0
FLAG -352 -48 0
FLAG -336 -192 Vcc
FLAG -432 -192 Vee
FLAG 16 16 Vee
FLAG 16 -112 Vcc
FLAG 224 384 0
FLAG -192 384 0
SYMBOL cap 80 -208 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 0.05uF
SYMBOL cap -208 272 R0
SYMATTR InstName C1
SYMATTR Value 1uF
SYMBOL voltage -352 -176 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 15V
SYMBOL voltage -448 -64 R180
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 15V
SYMBOL Opamps\\UniversalOpamp2 48 -48 R0
SYMATTR InstName U
SYMBOL current 224 272 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName I0
SYMATTR Value 0.05mA
SYMBOL diode 208 48 R0
SYMATTR InstName D
SYMATTR Value 1N4148
SYMBOL ind -176 128 R180
WINDOW 0 36 80 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName L
SYMATTR Value 1H
SYMATTR SpiceLine Rser=500
TEXT -504 24 Left 2 !.tran 0 3 0 0.1m