Version 4
SHEET 1 880 680
WIRE 64 -176 -64 -176
WIRE 384 -176 64 -176
WIRE 448 -176 384 -176
WIRE 384 -144 384 -176
WIRE -64 -48 -64 -176
WIRE 64 -48 64 -176
WIRE 208 -48 144 -48
WIRE 384 -48 384 -64
WIRE 384 -48 288 -48
WIRE 384 -32 384 -48
WIRE 144 48 144 -48
WIRE 208 48 144 48
WIRE 320 48 288 48
WIRE 384 64 384 48
WIRE 64 144 64 32
WIRE 144 144 144 48
WIRE 144 144 64 144
WIRE 208 144 144 144
WIRE 384 160 272 160
WIRE 448 160 384 160
WIRE -64 176 -64 32
WIRE 208 176 -64 176
WIRE 384 176 384 160
WIRE -64 224 -64 176
WIRE 592 224 592 208
WIRE 592 224 576 224
WIRE 64 240 64 144
WIRE -128 272 -160 272
WIRE 320 272 320 48
WIRE 384 272 384 256
WIRE 384 272 320 272
WIRE 384 288 384 272
WIRE -160 352 -160 272
WIRE -64 352 -64 320
WIRE -64 352 -160 352
WIRE 64 352 64 320
WIRE 64 352 -64 352
WIRE 64 384 64 352
WIRE 384 384 384 368
FLAG 64 384 0
FLAG 384 384 0
FLAG 384 64 0
FLAG 448 -176 VEE
FLAG 592 224 VEE
FLAG 448 160 out
IOPIN 448 160 Out
FLAG 592 128 0
SYMBOL res -80 -64 R0
SYMATTR InstName R1
SYMATTR Value 33k
SYMBOL res 48 -64 R0
SYMATTR InstName R2
SYMATTR Value 33k
SYMBOL res 48 224 R0
SYMATTR InstName R3
SYMATTR Value 1.8k
SYMBOL res 304 -64 R90
WINDOW 0 5 56 VBottom 0
WINDOW 3 27 56 VTop 0
SYMATTR InstName R4
SYMATTR Value 100k
SYMBOL res 304 32 R90
WINDOW 0 5 56 VBottom 0
WINDOW 3 27 56 VTop 0
SYMATTR InstName R5
SYMATTR Value 47k
SYMBOL res 368 160 R0
SYMATTR InstName R6
SYMATTR Value 910
SYMBOL res 368 272 R0
SYMATTR InstName R7
SYMATTR Value 1.09k
SYMBOL res 368 -160 R0
SYMATTR InstName R8
SYMATTR Value 5.375k
SYMBOL res 368 -48 R0
SYMATTR InstName R9
SYMATTR Value 4.625k
SYMBOL voltage 592 112 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 12V
SYMBOL Opamps\\opamp 240 96 R0
SYMATTR InstName U1
SYMBOL npn -128 320 M180
SYMATTR InstName Q1
SYMATTR Value 2N2222
TEXT 536 328 Left 0 !.lib opamp.sub
TEXT 536 352 Left 0 !.step temp 0 50 1
TEXT 536 376 Left 0 !.op