Version 4
SHEET 1 880 700
WIRE -224 288 -240 288
WIRE -144 288 -160 288
WIRE -144 320 -144 288
WIRE 32 320 16 320
WIRE -240 352 -240 288
WIRE 32 352 -112 352
WIRE 128 352 96 352
WIRE 16 384 16 320
WIRE 32 384 16 384
WIRE 160 384 96 384
WIRE 272 384 272 352
WIRE 272 384 224 384
WIRE 272 400 272 384
WIRE 128 416 128 352
WIRE -144 448 -144 384
WIRE -112 448 -144 448
WIRE -112 480 -112 448
WIRE -240 512 -240 432
WIRE -144 512 -144 448
WIRE -144 512 -240 512
WIRE 16 512 16 384
WIRE 16 512 -144 512
WIRE 128 512 128 496
WIRE 128 512 16 512
WIRE 272 512 272 480
WIRE 272 512 128 512
FLAG -112 480 0
FLAG 272 352 Out
IOPIN 272 352 Out
SYMBOL voltage 128 400 R0
WINDOW 0 -48 14 Left 0
WINDOW 3 -13 60 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 -38 85 VRight 0
SYMATTR InstName Vcc
SYMATTR Value 12
SYMBOL Pote -128 288 M0
WINDOW 0 -51 41 Left 0
WINDOW 123 -61 141 Center 0
WINDOW 3 -37 114 Center 0
SYMATTR InstName U1
SYMATTR Value2 Set={cursor}
SYMATTR Value Rt=100k
SYMBOL cap -224 304 R270
WINDOW 0 17 0 VTop 0
WINDOW 3 44 68 VBottom 0
SYMATTR InstName Cac
SYMATTR Value 10µ
SYMBOL voltage -240 336 R0
WINDOW 0 -15 59 Left 0
WINDOW 3 52 -23 VRight 0
SYMATTR InstName Vin
SYMATTR Value SINE(0 .1 {Fin})
SYMATTR Value2 AC .1
SYMATTR SpiceLine Rser=1k
SYMBOL res 256 384 R0
WINDOW 0 -69 100 Left 0
WINDOW 3 -18 65 Left 0
SYMATTR InstName RLoad
SYMATTR Value 8
SYMBOL polcap 160 400 R270
WINDOW 3 0 32 VBottom 0
WINDOW 0 32 32 VTop 0
SYMATTR Value 100µ
SYMATTR InstName Cout
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=16 Irms=135m Rser=0.8 MTBF=1000 Lser=0 mfg="Nichicon" pn="UPR1C101MPH" type="Al electrolytic" ppPkg=1
SYMBOL lm386 64 320 R0
SYMATTR InstName X2
TEXT -248 176 Left 0 !.tran 0 {50/Fin} {10/Fin}
TEXT 8 176 Left 0 !.param Fin=1e5\n.step param cursor .2 1 .2\n.four {Fin} V(out)
TEXT -256 88 Left 0 !.MEAS AC tmp max mag(V(out))\n.MEAS AC BW trig mag(V(out))=tmp/sqrt(2) rise=1\n+ targ mag(V(out))=tmp/sqrt(2) fall=last
TEXT -248 208 Left 0 ;.ac dec 100 1e2 1e7