Version 4
SHEET 1 880 680
WIRE 64 32 -80 32
WIRE 96 32 64 32
WIRE 192 32 160 32
WIRE 304 32 272 32
WIRE 368 32 304 32
WIRE 480 32 448 32
WIRE -80 48 -80 32
WIRE 64 64 64 32
WIRE 128 64 64 64
WIRE 304 64 304 32
WIRE 64 80 64 64
WIRE 240 112 128 112
WIRE 480 112 480 32
WIRE 480 112 464 112
WIRE -80 144 -80 128
WIRE -48 176 -80 176
WIRE 64 176 64 160
WIRE 64 176 16 176
WIRE 128 176 128 112
WIRE 128 176 64 176
WIRE 144 176 128 176
WIRE 224 176 208 176
WIRE 368 176 224 176
WIRE 480 176 480 112
WIRE 480 176 448 176
WIRE 304 192 304 160
WIRE 368 192 304 192
WIRE -80 208 -80 176
WIRE 64 208 64 176
WIRE 224 208 224 176
WIRE 304 208 304 192
WIRE 368 224 368 192
WIRE 0 256 -32 256
WIRE -32 272 -32 256
WIRE -80 304 -80 288
WIRE 0 304 0 256
WIRE 0 304 -80 304
WIRE 64 304 64 288
WIRE 64 304 0 304
WIRE 224 304 224 288
WIRE 224 304 64 304
WIRE 304 304 304 288
WIRE 304 304 224 304
WIRE 368 304 368 288
WIRE 368 304 304 304
FLAG -80 144 0
FLAG -32 272 0
FLAG 464 112 Out
IOPIN 464 112 Out
SYMBOL res 208 192 R0
WINDOW 0 -35 45 Left 0
WINDOW 3 -45 73 Left 0
SYMATTR InstName R1
SYMATTR Value 910
SYMBOL res 288 192 R0
WINDOW 0 -31 40 Left 0
WINDOW 3 -39 68 Left 0
SYMATTR InstName R2
SYMATTR Value 910
SYMBOL res 288 16 R90
WINDOW 0 16 102 VBottom 0
WINDOW 3 -12 4 VTop 0
SYMATTR InstName R4
SYMATTR Value 390
SYMBOL res 464 16 R90
WINDOW 0 17 106 VBottom 0
WINDOW 3 -11 9 VTop 0
SYMATTR InstName R5
SYMATTR Value 10k
SYMBOL res 464 160 R90
WINDOW 0 17 102 VBottom 0
WINDOW 3 -11 7 VTop 0
SYMATTR InstName R6
SYMATTR Value 10k
SYMBOL res 80 176 R180
WINDOW 0 -34 63 Left 0
WINDOW 3 -34 32 Left 0
SYMATTR InstName R7
SYMATTR Value 10k
SYMBOL polcap 144 192 R270
WINDOW 0 34 33 VTop 0
WINDOW 3 -4 36 VBottom 0
SYMATTR InstName C1
SYMATTR Value 1µ
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=50 Irms=36m Rser=3.5 MTBF=2000 Lser=0 mfg="Nichicon" pn="UPL1H010MAH" type="Al electrolytic" ppPkg=1
SYMBOL polcap 352 224 R0
WINDOW 0 -27 10 Left 0
WINDOW 3 -12 64 Left 0
SYMATTR InstName C2
SYMATTR Value 1µ
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=50 Irms=36m Rser=3.5 MTBF=2000 Lser=0 mfg="Nichicon" pn="UPL1H010MAH" type="Al electrolytic" ppPkg=1
SYMBOL polcap 16 160 R90
WINDOW 0 16 61 VBottom 0
WINDOW 3 -11 -11 VTop 0
SYMATTR InstName C3
SYMATTR Value 100µ
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=25 Irms=370m Rser=0.24 MTBF=2000 Lser=0 mfg="Nichicon" pn="UPL1E101MPH" type="Al electrolytic" ppPkg=1
SYMBOL npn2 240 64 R0
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL voltage -80 192 R0
WINDOW 0 -15 62 Left 0
WINDOW 3 -30 127 Left 0
WINDOW 123 30 22 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName Vs
SYMATTR Value SINE(0 1 185)
SYMATTR Value2 AC 1
SYMBOL voltage -80 32 R0
WINDOW 3 -13 59 Left 0
WINDOW 123 30 22 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName Vcc
SYMATTR Value 10
SYMBOL res 80 304 R180
WINDOW 0 -34 63 Left 0
WINDOW 3 -34 32 Left 0
SYMATTR InstName R8
SYMATTR Value 10k
SYMBOL Robertugo\\Pote 64 48 R270
WINDOW 0 0 7 VRight 0
WINDOW 3 -11 76 VRight 0
WINDOW 123 -33 85 VCenter 0
SYMATTR InstName U1
SYMATTR Value Rt=100
SYMATTR Value2 Set={cur}
TEXT -114 16 Left 0 !.ac dec 100 1 1e4
TEXT 32 320 Left 0 ;R1=1/(wC1); R2=1/(wC2); R4=R2/2; R3=R2/4\nR5=R6=R7=R8; C3>10.C1
TEXT -112 -8 Left 0 !.step param cur .55 .75 .05