Version 4
SHEET 1 880 680
WIRE 128 -112 -32 -112
WIRE 272 -112 128 -112
WIRE 128 -80 128 -112
WIRE 272 -32 272 -112
WIRE 128 16 128 -16
WIRE -32 80 -32 -112
WIRE 272 80 272 48
WIRE 128 128 128 80
WIRE 208 128 128 128
WIRE 128 192 128 128
WIRE 272 192 272 176
WIRE 400 192 272 192
WIRE 272 224 272 192
WIRE -32 320 -32 160
WIRE 128 320 128 272
WIRE 272 320 272 288
FLAG 128 320 0
FLAG 272 320 0
FLAG 400 192 out
FLAG -32 320 0
SYMBOL pnp 208 176 M180
SYMATTR InstName Q1
SYMATTR Value 2N2907
SYMBOL Misc\\EuropeanResistor 256 -48 R0
SYMATTR InstName R1
SYMATTR Value 12
SYMBOL Misc\\EuropeanResistor 112 176 R0
SYMATTR InstName R2
SYMATTR Value 4.7k
SYMBOL diode 112 16 R0
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL diode 112 -80 R0
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL polcap 256 224 R0
SYMATTR InstName C1
SYMATTR Value 100u
SYMBOL voltage -32 64 R0
SYMATTR InstName V1
SYMATTR Value 20
TEXT -32 -176 Left 2 !.tran 0.1 startup