Version 4
SHEET 1 880 680
WIRE 608 32 528 32
WIRE 432 48 416 48
WIRE 528 112 528 32
WIRE 560 112 528 112
WIRE 224 128 208 128
WIRE 336 128 336 48
WIRE 336 128 304 128
WIRE 432 128 432 48
WIRE 0 176 0 160
WIRE 0 176 -32 176
WIRE 336 176 336 128
WIRE 352 176 336 176
WIRE -32 192 -32 176
WIRE 0 192 0 176
WIRE 432 192 432 128
WIRE 432 192 416 192
WIRE 528 192 528 112
WIRE 528 192 512 192
WIRE 544 192 528 192
WIRE 320 208 208 208
WIRE 352 208 320 208
WIRE 624 208 624 112
WIRE 624 208 608 208
WIRE 688 208 688 32
WIRE 544 224 528 224
WIRE 208 240 208 208
WIRE 320 240 320 208
WIRE 528 256 528 224
FLAG 208 400 0
FLAG -32 192 0
FLAG 0 80 U+
FLAG 0 272 U-
FLAG 384 160 U+
FLAG 384 224 U-
FLAG 320 304 0
FLAG 576 176 U+
FLAG 576 240 U-
FLAG 528 256 0
FLAG 208 208 Ui
FLAG 688 32 Ua
FLAG 432 128 Uz
FLAG 208 128 0
SYMBOL voltage 0 64 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL voltage 0 176 R0
SYMATTR InstName V2
SYMATTR Value 12
SYMBOL voltage 208 304 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value PULSE(0 1 0 0 0 1n)
SYMBOL Opamps\\UniversalOpamp2 384 192 R0
SYMATTR InstName U1
SYMBOL cap 304 240 R0
SYMATTR InstName C1
SYMATTR Value 12p
SYMBOL ind 192 224 R0
SYMATTR InstName L1
SYMATTR Value 100m
SYMBOL Opamps\\UniversalOpamp2 576 208 R0
SYMATTR InstName U2
SYMBOL diode 624 224 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMATTR Value RB715WM
SYMBOL schottky 560 128 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D2
SYMATTR Value RB715WM
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 704 16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 30k
SYMBOL res 528 176 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 1.5k
SYMBOL res 320 112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 10
SYMBOL res 432 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 10k
TEXT -56 344 Left 2 !.tran 0 100u 0 1n