Version 4
SHEET 1 2732 972
WIRE 32 -80 -256 -80
WIRE 144 -80 32 -80
WIRE 240 -80 144 -80
WIRE 320 -80 240 -80
WIRE 1152 -80 912 -80
WIRE 1312 -80 1152 -80
WIRE 1408 -80 1312 -80
WIRE 1488 -80 1408 -80
WIRE 32 -48 32 -80
WIRE 144 -48 144 -80
WIRE 1152 -48 1152 -80
WIRE 1312 -48 1312 -80
WIRE 480 -16 480 -32
WIRE 704 -16 704 -32
WIRE -256 0 -256 -80
WIRE 912 0 912 -80
WIRE 320 32 320 -80
WIRE 384 32 368 32
WIRE 1488 32 1488 -80
WIRE 144 80 144 32
WIRE 192 80 144 80
WIRE 256 80 192 80
WIRE 480 80 480 64
WIRE 704 80 704 64
WIRE 1312 80 1312 32
WIRE 1360 80 1312 80
WIRE 1424 80 1360 80
WIRE 384 128 368 128
WIRE -256 160 -256 80
WIRE 912 160 912 80
WIRE 320 192 320 128
WIRE 384 192 320 192
WIRE 432 192 384 192
WIRE 480 192 432 192
WIRE 1488 192 1488 128
WIRE 1552 192 1488 192
WIRE 1600 192 1552 192
WIRE 1632 192 1600 192
WIRE 144 240 144 80
WIRE 208 240 192 240
WIRE 320 240 320 192
WIRE 1312 240 1312 80
WIRE 1488 240 1488 192
WIRE 432 256 432 192
WIRE 1600 256 1600 192
WIRE -208 288 -256 288
WIRE -176 288 -208 288
WIRE -64 288 -112 288
WIRE 0 288 -64 288
WIRE 32 288 32 32
WIRE 32 288 0 288
WIRE 80 288 32 288
WIRE 960 288 912 288
WIRE 992 288 960 288
WIRE 1104 288 1056 288
WIRE 1152 288 1152 32
WIRE 1152 288 1104 288
WIRE 1200 288 1152 288
WIRE 1248 288 1200 288
WIRE 208 336 192 336
WIRE -256 368 -256 288
WIRE 912 368 912 288
WIRE 144 384 144 336
WIRE 240 384 144 384
WIRE 320 384 320 320
WIRE 320 384 240 384
WIRE 432 384 432 336
WIRE 1312 384 1312 336
WIRE 1408 384 1312 384
WIRE 1488 384 1488 320
WIRE 1488 384 1408 384
WIRE 1600 384 1600 336
WIRE 32 400 32 288
WIRE 1152 400 1152 288
WIRE 144 416 144 384
WIRE 1312 416 1312 384
WIRE -256 528 -256 448
WIRE 32 528 32 480
WIRE 32 528 -256 528
WIRE 144 528 144 496
WIRE 144 528 32 528
WIRE 912 528 912 448
WIRE 1152 528 1152 480
WIRE 1152 528 912 528
WIRE 1312 528 1312 496
WIRE 1312 528 1152 528
WIRE 32 544 32 528
WIRE 1152 544 1152 528
FLAG 32 544 0
FLAG 208 240 P1
FLAG 208 336 TC1
FLAG 384 32 TC2
FLAG 384 128 P2
FLAG -256 160 0
FLAG 480 192 out
FLAG -208 288 in
FLAG -64 288 in1
FLAG 704 80 0
FLAG 704 -32 TC2
FLAG 480 80 0
FLAG 480 -32 TC1
FLAG 1152 544 0
FLAG 912 160 0
FLAG 1632 192 out_
FLAG 960 288 in_
FLAG 1104 288 in1_
FLAG 432 384 0
FLAG 1600 384 0
DATAFLAG 240 -80 ""
DATAFLAG 192 80 "round(1k*$)/1k"
DATAFLAG 240 384 "round(1k*$)/1k$"
DATAFLAG 0 288 "round(1k*$)/1k"
DATAFLAG 384 192 "round(1k*$)/1k"
DATAFLAG 1408 -80 ""
DATAFLAG 1360 80 "round(1k*$)/1k"
DATAFLAG 1408 384 "round(1k*$)/1k$"
DATAFLAG 1200 288 "round(1k*$)/1k"
DATAFLAG 1552 192 "round(1k*$)/1k"
SYMBOL pnp_dT_P 256 128 M180
SYMATTR InstName Q2
SYMATTR Value X2N2907
SYMBOL res 128 -64 R0
SYMATTR InstName R1
SYMATTR Value 470
SYMBOL res 304 224 R0
SYMATTR InstName R2
SYMATTR Value 500
SYMBOL voltage -256 352 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value SINE(0 .4 1k)
SYMBOL npn_dT_P 80 240 R0
SYMATTR InstName Q1
SYMATTR Value X2N2222
SYMBOL res 16 -64 R0
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL res 16 384 R0
SYMATTR InstName R4
SYMATTR Value 2.2k
SYMBOL res 128 400 R0
SYMATTR InstName R5
SYMATTR Value 100
SYMBOL voltage -256 -16 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 12
SYMBOL cap -176 304 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C1
SYMATTR Value 1µ
SYMBOL bv 704 -32 R0
SYMATTR InstName B1
SYMATTR Value V=100*V(P2)
SYMBOL bv 480 -32 R0
SYMATTR InstName B2
SYMATTR Value V=100*V(P1)
SYMBOL res 1296 -64 R0
SYMATTR InstName R6
SYMATTR Value 470
SYMBOL res 1472 224 R0
SYMATTR InstName R7
SYMATTR Value 500
SYMBOL voltage 912 352 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value SINE(0 .4 1k)
SYMBOL res 1136 -64 R0
SYMATTR InstName R8
SYMATTR Value 10k
SYMBOL res 1136 384 R0
SYMATTR InstName R9
SYMATTR Value 2.2k
SYMBOL res 1296 400 R0
SYMATTR InstName R10
SYMATTR Value 100
SYMBOL voltage 912 -16 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V4
SYMATTR Value 12
SYMBOL cap 992 304 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C2
SYMATTR Value 1µ
SYMBOL pnp 1424 128 M180
SYMATTR InstName Q3
SYMATTR Value 2N2907
SYMBOL npn 1248 240 R0
SYMATTR InstName Q4
SYMATTR Value 2N2222
SYMBOL res 416 240 R0
SYMATTR InstName R11
SYMATTR Value 500
SYMBOL res 1584 240 R0
SYMATTR InstName R12
SYMATTR Value 500
TEXT -264 552 Left 2 !*    C B E dT P\n.subckt X2N2222 1 2 3 4 5\nQ1 1 20 3 2N2222\nBVBE 2 20 V=-2m*V(4)\nBPOWER 5 0 V=V(1,3)*Ic(Q1)+V(2,3)*Ib(Q1)\n*\n.model 2N2222 NPN(IS=1E-14 VAF=100 BF=200 IKF=0.3 XTB=1.5 \n+ BR=3 CJC=8E-12 CJE=25E-12 TR=100E-9 TF=400E-12 ITF=1 \n+ VTF=2 XTF=3 RB=10 RC=.3 RE=.2 )\n.ENDS
TEXT 560 520 Left 2 !*    C B E dT P\n.subckt X2N2907 1 2 3 4 5\nQ1 1 20 3 2N2907\nBVBE 20 2 V=-2m*V(4)\nBPOWER 5 0 V=V(1,3)*Ic(Q1)+V(2,3)*Ib(Q1)\n *\n.model 2N2907 PNP(IS=1E-14 VAF=120 BF=250 IKF=0.3 XTB=1.5 \n+ BR=3 CJC=8E-12 CJE=30E-12 TR=100E-9 TF=400E-12 ITF=1 \n+ VTF=2 XTF=3 RB=10 RC=.3 RE=.2 )\n.ENDS
TEXT -232 224 Left 2 !.op
TEXT -224 152 Left 2 !.tran 0 20m 0 1u
TEXT -232 192 Left 2 !.option plotwinsize=0
TEXT -224 112 Left 2 !.four 1k V(out) V(out_)
TEXT -56 -96 Left 2 ;.lib Temp_transistors.lib
TEXT 304 -104 Left 2 ;Time constants should be added in the temperature conversion circuit.