Version 4
SHEET 1 880 680
WIRE 160 16 -80 16
WIRE 272 16 160 16
WIRE 160 64 160 16
WIRE -80 96 -80 16
WIRE 352 96 272 96
WIRE 208 144 160 144
WIRE 160 160 160 144
WIRE 272 208 272 192
WIRE 96 256 16 256
WIRE 160 256 160 240
WIRE 208 256 160 256
WIRE 16 272 16 256
WIRE -80 384 -80 176
WIRE 16 384 16 352
WIRE 16 384 -80 384
WIRE 96 384 16 384
WIRE 160 384 160 336
WIRE 160 384 96 384
WIRE 272 384 160 384
WIRE 96 416 96 384
FLAG 96 144 0
FLAG 96 416 0
DATAFLAG 544 96 ""
SYMBOL npn 208 96 R0
SYMATTR InstName Q1
SYMBOL npn 208 208 R0
SYMATTR InstName Q2
SYMBOL res 144 48 R0
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res 144 144 R0
SYMATTR InstName R2
SYMATTR Value 1k
SYMBOL res 144 240 R0
SYMATTR InstName R3
SYMATTR Value 1.2k
SYMBOL res 256 0 R0
SYMATTR InstName R4
SYMATTR Value 1k
SYMBOL res 256 288 R0
SYMATTR InstName R5
SYMATTR Value 100
SYMBOL cap 160 128 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 2µ
SYMBOL cap 160 240 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 2µ
SYMBOL voltage 16 256 R0
WINDOW 123 24 108 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value2 AC 0.01
SYMATTR InstName V1
SYMATTR Value SINE(0 0.01 100k 0 0 0 20)
SYMBOL voltage -80 80 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 108 Left 2
SYMATTR SpiceLine Rser=1
SYMATTR InstName V2
SYMATTR Value 12
TEXT -112 400 Left 2 !.ac dec 5 100 100000000