Version 4
SHEET 1 880 680
WIRE 176 -208 48 -208
WIRE 304 -208 176 -208
WIRE 304 -128 304 -208
WIRE 176 -80 176 -208
WIRE 304 -32 304 -48
WIRE 304 -32 240 -32
WIRE 304 16 304 -32
WIRE 176 64 176 16
WIRE 240 64 176 64
WIRE 176 160 176 64
WIRE 304 160 304 112
WIRE 400 160 304 160
WIRE 48 192 48 -208
WIRE 304 192 304 160
WIRE 400 240 400 160
WIRE 400 240 368 240
WIRE 48 336 48 272
WIRE 176 336 176 240
WIRE 176 336 48 336
WIRE 304 336 304 288
WIRE 304 336 176 336
WIRE 304 400 304 336
FLAG 304 400 0
FLAG 304 160 mp
SYMBOL voltage 48 176 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 15
SYMBOL pnp 240 112 M180
SYMATTR InstName Q15
SYMATTR Value BC557B
SYMBOL Misc\\EuropeanResistor 160 144 R0
SYMATTR InstName R15
SYMATTR Value 47K
SYMBOL Misc\\EuropeanResistor 288 -144 R0
SYMATTR InstName R17
SYMATTR Value 47K
SYMBOL pnp 240 16 R180
SYMATTR InstName Q17
SYMATTR Value BC557B
SYMBOL npn 368 192 M0
SYMATTR InstName Q13
SYMATTR Value BC547B
TEXT 16 424 Left 2 !.tran 0 1 0.1
TEXT 16 392 Left 2 !.temp 0 20 60