Version 4
SHEET 1 880 680
WIRE -384 -112 -624 -112
WIRE -144 -112 -384 -112
WIRE -384 -64 -384 -112
WIRE -144 0 -144 -112
WIRE -624 32 -624 -112
WIRE -384 48 -384 16
WIRE -208 48 -384 48
WIRE -384 96 -384 48
WIRE -224 96 -384 96
WIRE 144 96 -144 96
WIRE -384 128 -384 96
WIRE 144 176 144 96
WIRE -224 192 -224 96
WIRE -384 240 -384 192
WIRE -288 240 -384 240
WIRE -384 304 -384 240
WIRE 144 304 144 256
WIRE 144 304 -384 304
WIRE -624 368 -624 112
WIRE -224 368 -224 288
WIRE -224 368 -624 368
WIRE -144 368 -224 368
WIRE 144 368 144 304
WIRE 144 368 -64 368
SYMBOL polcap -400 128 R0
WINDOW 3 24 56 Left 2
SYMATTR InstName C1
SYMATTR Value 470p
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=50 Irms=22m Rser=3.9 Lser=0
SYMBOL res -400 -80 R0
SYMATTR InstName R1
SYMATTR Value 10K
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL res -48 352 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 10
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL res 128 160 R0
SYMATTR InstName R_Last
SYMATTR Value 1
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL voltage -624 16 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 124 Left 2
SYMATTR InstName V1
SYMATTR Value 18
SYMATTR SpiceLine Rser=0
SYMBOL npn -208 0 R0
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL npn -288 192 R0
SYMATTR InstName Q2
SYMATTR Value 2N3904
TEXT -658 418 Left 2 !.tran 0 10 0 0.01