Version 4
SHEET 1 880 680
WIRE 96 -208 32 -208
WIRE 224 -208 176 -208
WIRE 304 -208 224 -208
WIRE 224 -144 224 -208
WIRE -112 -128 -240 -128
WIRE 32 -128 32 -208
WIRE 64 -128 32 -128
WIRE 160 -128 128 -128
WIRE -176 -48 -176 -64
WIRE -240 -32 -240 -128
WIRE -208 -32 -240 -32
WIRE -112 -16 -112 -128
WIRE -112 -16 -144 -16
WIRE -80 -16 -112 -16
WIRE 32 -16 32 -128
WIRE 32 -16 0 -16
WIRE 64 -16 32 -16
WIRE -208 0 -352 0
WIRE 160 0 160 -128
WIRE 160 0 128 0
WIRE 224 0 224 -80
WIRE 224 0 160 0
WIRE -352 16 -352 0
WIRE 64 16 32 16
WIRE -176 32 -176 16
WIRE 32 48 32 16
WIRE -352 128 -352 96
WIRE -352 224 -352 208
WIRE -240 224 -240 208
WIRE -352 336 -352 304
WIRE -240 336 -240 304
FLAG -352 128 0
FLAG -352 336 0
FLAG -352 208 U+
FLAG 96 -32 U+
FLAG 96 32 U-
FLAG -352 0 Ui
FLAG 32 48 0
FLAG -176 -64 U+
FLAG -176 32 U-
FLAG 304 -208 out
IOPIN 304 -208 Out
FLAG -240 336 0
FLAG -240 208 U-
SYMBOL voltage -352 208 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL voltage -352 0 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value SINE(0 100m 150k)
SYMBOL schottky 64 -112 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMATTR Value RB705D
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 208 -80 M180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
SYMATTR Value RB705D
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 192 -224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 1k
SYMBOL res 16 -32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL Opamps\\UniversalOpamp2 -176 -16 R0
SYMATTR InstName U1
SYMBOL Opamps\\UniversalOpamp2 96 0 R0
WINDOW 123 -121 96 Left 2
SYMATTR InstName U2
SYMATTR Value2 Avol=1Meg GBW=10Meg Slew=7Meg
SYMBOL voltage -240 208 R0
SYMATTR InstName V2
SYMATTR Value -12
TEXT -376 -280 Left 2 !.tran 0 40u 20u 1n