Version 4
SHEET 1 880 904
WIRE -16 224 -16 208
WIRE -16 208 48 208
WIRE -16 48 -16 32
WIRE 48 32 -16 32
WIRE -160 -128 -160 -144
WIRE -160 -144 -144 -144
WIRE 16 -144 32 -144
WIRE 240 -192 240 -240
WIRE 304 -240 240 -240
WIRE 240 -240 240 -256
WIRE 240 -240 192 -240
WIRE 96 -144 112 -144
WIRE 112 -160 112 -144
WIRE 112 -144 176 -144
WIRE 240 -80 240 -96
WIRE -144 -144 -64 -144
WIRE 384 -128 384 -144
WIRE 400 -240 384 -240
WIRE 384 -224 384 -240
WIRE 384 -240 368 -240
WIRE 480 -240 480 -256
WIRE 240 -336 240 -352
WIRE 240 -352 480 -352
WIRE 480 -352 480 -336
WIRE 192 -240 112 -240
WIRE 112 -128 112 -144
WIRE 128 208 160 208
WIRE 160 208 160 224
WIRE 160 208 192 208
WIRE 128 32 160 32
WIRE 160 32 160 48
WIRE 160 32 192 32
WIRE 288 48 288 32
WIRE 288 32 352 32
WIRE 288 224 288 208
WIRE 288 208 352 208
WIRE 160 304 160 288
WIRE 160 128 160 112
FLAG 192 208 avr
FLAG -16 304 0
FLAG -16 128 0
FLAG -96 48 o
FLAG 192 32 p0
FLAG -160 -48 0
FLAG 240 -80 0
FLAG -144 -144 in
FLAG 384 -128 0
FLAG 400 -240 out
FLAG 480 -240 0
FLAG 192 -240 vc
FLAG 112 -48 0
FLAG 160 304 0
FLAG 160 128 0
FLAG 288 128 0
FLAG 352 32 rms
FLAG -160 48 out
FLAG 288 304 0
FLAG 352 208 U
SYMBOL bv -16 208 R0
WINDOW 0 33 31 Left 0
SYMATTR InstName B3
SYMATTR Value V=abs(V(o))
SYMBOL bv -16 32 R0
WINDOW 0 30 22 Left 0
SYMATTR InstName B1
SYMATTR Value V=V(o)**2
SYMBOL res 144 192 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R7
SYMATTR Value 1k
SYMBOL res 144 16 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R6
SYMATTR Value 1k
SYMBOL Misc\\jumper -128 -16 R0
SYMATTR InstName X1
SYMBOL voltage -160 -144 R0
WINDOW 0 33 29 Left 0
WINDOW 3 33 85 Left 0
WINDOW 123 33 57 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value SINE(0 {a} 1e6)
SYMATTR Value2 AC 1m
SYMBOL npn 176 -192 R0
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL res 224 -352 R0
SYMATTR InstName R4
SYMATTR Value 2.2k
SYMBOL res 96 -256 R0
SYMATTR InstName R2
SYMATTR Value 330k
SYMBOL cap 368 -256 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C2
SYMATTR Value 3.3n
SYMBOL cap 96 -160 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C1
SYMATTR Value 2.2n
SYMBOL res 32 -160 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R1
SYMATTR Value 100
SYMBOL res 368 -240 R0
SYMATTR InstName R5
SYMATTR Value 500
SYMBOL voltage 480 -352 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 9
SYMBOL res 96 -144 R0
SYMATTR InstName R3
SYMATTR Value 56k
SYMBOL bv 288 32 R0
WINDOW 0 29 22 Left 0
SYMATTR InstName B2
SYMATTR Value V=sqrt(V(p0))
SYMBOL bv 288 208 R0
WINDOW 0 29 22 Left 0
SYMATTR InstName B4
SYMATTR Value V={a}
SYMBOL cap 144 48 R0
SYMATTR InstName C3
SYMATTR Value 20n
SYMBOL cap 144 224 R0
SYMATTR InstName C4
SYMATTR Value 20n
TEXT 304 -80 Left 0 !* .ac oct 50 1k 100e6\n* .tran 300u
TEXT -192 -336 Left 0 !* .param a 10m\n.step param a 5m 40m 5m\n.tran 0 201u 200u 1n