Version 4
SHEET 1 1224 680
WIRE 208 -128 32 -128
WIRE 592 -128 208 -128
WIRE 704 -128 592 -128
WIRE 592 -96 592 -128
WIRE 704 -96 704 -128
WIRE 32 -80 32 -128
WIRE 208 -80 208 -128
WIRE 464 16 416 16
WIRE 592 16 592 -16
WIRE 592 16 544 16
WIRE 704 16 704 -16
WIRE 208 112 208 0
WIRE 240 112 208 112
WIRE 304 112 240 112
WIRE 416 112 416 16
WIRE 416 112 368 112
WIRE 448 112 416 112
WIRE 592 112 592 16
WIRE 592 112 512 112
WIRE 624 112 592 112
WIRE 688 112 624 112
WIRE 816 112 752 112
WIRE 848 112 816 112
WIRE 208 144 208 112
WIRE 592 144 592 112
WIRE 816 144 816 112
WIRE -256 192 -304 192
WIRE -128 192 -176 192
WIRE -80 192 -128 192
WIRE 32 192 32 0
WIRE 32 192 -16 192
WIRE 112 192 32 192
WIRE 144 192 112 192
WIRE 416 192 416 112
WIRE 528 192 416 192
WIRE 816 256 816 224
WIRE -304 272 -304 192
WIRE 208 272 208 240
WIRE 320 272 208 272
WIRE 592 272 592 240
WIRE 704 272 592 272
WIRE 32 304 32 192
WIRE 208 304 208 272
WIRE 592 304 592 272
WIRE 704 304 704 272
WIRE 320 320 320 272
WIRE -304 432 -304 352
WIRE 32 432 32 384
WIRE 32 432 -304 432
WIRE 208 432 208 384
WIRE 208 432 32 432
WIRE 320 432 320 384
WIRE 320 432 208 432
WIRE 592 432 592 384
WIRE 592 432 320 432
WIRE 704 432 704 368
WIRE 704 432 592 432
WIRE -304 464 -304 432
FLAG -304 464 0
FLAG 704 16 0
FLAG 816 256 0
FLAG 848 112 Ua
FLAG -304 192 U0
FLAG -128 192 Ue
FLAG 624 112 4
FLAG 112 192 1
FLAG 240 112 2
FLAG 416 16 3
FLAG 704 -128 Ub
SYMBOL Misc\\EuropeanResistor 16 -96 R0
SYMATTR InstName R1
SYMATTR Value 100k
SYMBOL Misc\\EuropeanResistor 16 288 R0
SYMATTR InstName R2
SYMATTR Value {RP}
SYMBOL Misc\\EuropeanResistor 192 -96 R0
SYMATTR InstName R3
SYMATTR Value 4.7k
SYMBOL Misc\\EuropeanResistor 192 288 R0
SYMATTR InstName R4
SYMATTR Value 1k
SYMBOL Misc\\EuropeanResistor 448 32 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R5
SYMATTR Value 1Meg
SYMBOL Misc\\EuropeanResistor 576 -112 R0
SYMATTR InstName R6
SYMATTR Value 4.7k
SYMBOL Misc\\EuropeanResistor 576 288 R0
SYMATTR InstName R7
SYMATTR Value 1k
SYMBOL npn 144 144 R0
SYMATTR InstName Q1
SYMATTR Value BC547B
SYMBOL npn 528 144 R0
SYMATTR InstName Q2
SYMATTR Value BC547B
SYMBOL polcap -16 176 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 47u
SYMBOL polcap 304 320 R0
SYMATTR InstName C2
SYMATTR Value 47u
SYMBOL polcap 688 304 R0
SYMATTR InstName C4
SYMATTR Value 47u
SYMBOL polcap 304 128 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C3
SYMATTR Value 47u
SYMBOL cap 448 128 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C6
SYMATTR Value 47p
SYMBOL Misc\\battery 704 -112 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL polcap 688 128 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C5
SYMATTR Value 47u
SYMBOL Misc\\EuropeanResistor 800 128 R0
SYMATTR InstName RL
SYMATTR Value 10k
SYMBOL Misc\\EuropeanResistor -272 208 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName RG
SYMATTR Value 1k
SYMBOL voltage -304 256 R0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 0
SYMATTR Value2 AC 1
TEXT -320 -136 Left 2 !.op
TEXT -320 -168 Left 2 ;.step param RP 1k 50k 100
TEXT -320 -208 Left 2 !.param RP=table(Ic1, 0.1, 6k, 0.2, 7.2k, 0.5, 10.4k, 1,16.3k, 1.5, 23k, 2, 30.9k)
TEXT -312 -272 Left 2 !.step param Ic1 list 0.1 0.2 0.5 1 1.5 2
TEXT -312 -328 Left 2 !.ac dec 100 10 100k
TEXT -320 552 Left 2 !.options meascplxfmt=polar\n.meas V1KHZ FIND mag(V(Ua)) at 1K\n.meas VUGF FIND freq WHEN mag(V(Ua))=V1KHZ/sqrt(2)\n.meas VOGF FIND freq WHEN mag(V(Ua))=V1KHZ/sqrt(2) FALL=1