solidbrush 255 255 255
roundrect 0 0  120 160 5 5 
solidbrush 255 255 255
solidbrush 192 192 255
component R 20 20
arrow 20 35 40 35
label 45 35 5
component R 20 80
component R 20 140
polyline 20 65 40 65
polyline 0 100 10 100 10 50 30 50 
symbol compsmall 50 60
polyline 20 100 40 100
polyline 0 120 40 120
symbol compsmall 50 110
polyline 50 60 60 60
polyline 50 110 60 110
rectangle 57 50 80 120
label 65 60 S
label 65 110 R
label 75 60 Q
polyline 80 60 120 60 
symbol buffer 100 60
circle 82 60 2
circle 112 60 2
symbol npn 110 125 
arrow 110 115 110 95
label 110 90 7
*polyline 110 115 110 40 0 40
polyline 87 60 87 125 90 125
polyline 110 155 20 155
*polyline 80 0 80 20 60 20 
symbol pnp 87 35 90 
polyline 67 35 60 35 60 0
*symbol pnp 80 15 0
label 105 10 Vref
*
ICpin 0 40 7 L
ICpin 0 100 6 L
ICpin 0 120 2 L
ICpin 120 60 3 R
ICpin 120 120 5 R
icpin 20 0 8 T
icpin 60 0 4 T
icpin 20 160 1 B


*
ICpin -6 40 7
ICpin -6 100 6
ICpin -6 120 2
ICpin 126 60 3
icpin 20 -6 8

rectangle -15 10 0 30
textcenter -7 20 8
rectangle -15 70 0 90
textcenter -7 80 7
rectangle -15 130 0 150
textcenter -7 140 6
rectangle -15 190 0 210
textcenter -7 200 5