Version 4
SHEET 1 888 680
WIRE 80 -160 -16 -160
WIRE 240 -160 160 -160
WIRE -144 -32 -528 -32
WIRE -16 -32 -16 -160
WIRE -16 -32 -64 -32
WIRE 96 -32 -16 -32
WIRE 576 -32 368 -32
WIRE 720 -32 640 -32
WIRE 832 -32 720 -32
WIRE 240 -16 240 -160
WIRE 240 -16 160 -16
WIRE 368 -16 368 -32
WIRE 368 -16 240 -16
WIRE 96 0 16 0
WIRE 16 32 16 0
WIRE -832 128 -832 112
WIRE -832 128 -928 128
WIRE 720 128 720 -32
WIRE 832 144 832 -32
WIRE -832 160 -832 128
WIRE -928 176 -928 128
WIRE -528 176 -528 -32
WIRE -528 304 -528 256
WIRE 720 304 720 208
WIRE 720 304 -528 304
WIRE 832 304 832 208
WIRE 832 304 720 304
WIRE -528 384 -528 304
FLAG -528 384 0
FLAG 16 32 0
FLAG -928 176 0
FLAG -832 32 V+
FLAG -832 240 V-
FLAG 128 -48 V+
FLAG 128 16 V-
SYMBOL res 704 112 R0
SYMATTR InstName R1
SYMATTR Value 100k
SYMBOL voltage -528 160 R0
SYMATTR InstName V1
SYMATTR Value wavefile=petru1.wav
SYMBOL diode 576 -16 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMBOL cap 816 144 R0
SYMATTR InstName C1
SYMATTR Value 1µ
SYMBOL Opamps\\AD795 128 -80 R0
SYMATTR InstName U1
SYMBOL voltage -832 16 R0
SYMATTR InstName V2
SYMATTR Value 12
SYMBOL voltage -832 144 R0
SYMATTR InstName V3
SYMATTR Value 12
SYMBOL res -48 -48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 20k
SYMBOL res 176 -176 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 100k
TEXT -562 408 Left 2 !.tran 5