Version 4
SHEET 1 1992 1044
WIRE 1168 -240 1152 -240
WIRE 1184 -240 1168 -240
WIRE 1264 -240 1248 -240
WIRE 1280 -240 1264 -240
WIRE 1152 -208 1152 -240
WIRE 1248 -208 1248 -240
WIRE -1056 -128 -1200 -128
WIRE -832 -128 -960 -128
WIRE -800 -128 -832 -128
WIRE -672 -128 -720 -128
WIRE 144 -128 0 -128
WIRE 368 -128 240 -128
WIRE 400 -128 368 -128
WIRE 528 -128 480 -128
WIRE 1152 -96 1152 -128
WIRE 1248 -96 1248 -128
WIRE -1360 0 -1440 0
WIRE -1200 0 -1200 -128
WIRE -1200 0 -1280 0
WIRE -1152 0 -1200 0
WIRE -1008 0 -1008 -64
WIRE -1008 0 -1072 0
WIRE -960 0 -1008 0
WIRE -832 0 -832 -128
WIRE -832 0 -864 0
WIRE -672 0 -672 -128
WIRE -560 0 -672 0
WIRE -432 0 -560 0
WIRE -160 0 -240 0
WIRE 0 0 0 -128
WIRE 0 0 -80 0
WIRE 48 0 0 0
WIRE 192 0 192 -64
WIRE 192 0 128 0
WIRE 240 0 192 0
WIRE 368 0 368 -128
WIRE 368 0 336 0
WIRE 528 0 528 -128
WIRE 640 0 528 0
WIRE 736 0 640 0
WIRE 928 0 816 0
WIRE 1056 0 928 0
WIRE -1008 16 -1008 0
WIRE 192 16 192 0
WIRE 1056 32 1056 0
WIRE -432 48 -432 0
WIRE -1440 64 -1440 0
WIRE -560 64 -560 0
WIRE -240 64 -240 0
WIRE 640 64 640 0
WIRE 880 80 848 80
WIRE 896 80 880 80
WIRE 848 112 848 80
WIRE -1200 128 -1200 0
WIRE -1152 128 -1200 128
WIRE -1008 128 -1008 96
WIRE -1008 128 -1072 128
WIRE -912 128 -912 64
WIRE -912 128 -1008 128
WIRE -800 128 -912 128
WIRE -672 128 -672 0
WIRE -672 128 -720 128
WIRE 0 128 0 0
WIRE 48 128 0 128
WIRE 192 128 192 96
WIRE 192 128 128 128
WIRE 288 128 288 64
WIRE 288 128 192 128
WIRE 400 128 288 128
WIRE 528 128 528 0
WIRE 528 128 480 128
WIRE 928 128 928 0
WIRE 928 128 880 128
WIRE 816 144 768 144
WIRE 1056 144 1056 112
WIRE 1216 144 1056 144
WIRE 928 160 880 160
WIRE -560 176 -560 128
WIRE -496 176 -560 176
WIRE -432 176 -432 128
WIRE -432 176 -496 176
WIRE 1056 176 1056 144
WIRE -1440 192 -1440 144
WIRE -496 192 -496 176
WIRE -240 192 -240 144
WIRE 640 192 640 128
WIRE 848 208 848 176
WIRE 880 208 848 208
WIRE 896 208 880 208
WIRE 928 288 928 160
WIRE 1056 288 1056 256
WIRE 1056 288 928 288
WIRE 928 320 928 288
WIRE 1104 368 1088 368
WIRE 1136 368 1104 368
WIRE 1136 384 1136 368
WIRE 1056 400 1056 288
WIRE 1104 400 1056 400
WIRE 1216 416 1216 144
WIRE 1216 416 1168 416
WIRE 768 432 768 144
WIRE 928 432 928 400
WIRE 928 432 768 432
WIRE 1104 432 1056 432
WIRE 928 464 928 432
WIRE 1104 480 1088 480
WIRE 1136 480 1136 448
WIRE 1136 480 1104 480
WIRE 928 560 928 528
WIRE 992 560 928 560
WIRE 1056 560 1056 432
WIRE 1056 560 992 560
WIRE 992 592 992 560
WIRE 992 688 992 672
FLAG -1440 192 0
FLAG -496 192 0
FLAG 1104 480 Vee
FLAG 1104 368 Vcc
FLAG 880 80 Vee
FLAG 880 208 Vcc
FLAG 992 688 0
FLAG 1152 -96 0
FLAG 1248 -96 0
FLAG 1264 -240 Vcc
FLAG 1168 -240 Vee
FLAG -240 192 0
FLAG 640 192 0
SYMBOL voltage -1440 48 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V
SYMATTR Value 2.3V
SYMBOL ind -1376 16 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L2
SYMATTR Value 1H
SYMATTR SpiceLine Rser=500
SYMBOL npn -960 64 R270
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL npn -1056 -64 R270
SYMATTR InstName Q2
SYMATTR Value 2N3904
SYMBOL res -1168 144 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName RD1
SYMATTR Value 80k
SYMBOL res -816 144 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName RD2
SYMATTR Value 18.6k
SYMBOL res -1168 16 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName RD3
SYMATTR Value 25k
SYMBOL res -1024 0 R0
SYMATTR InstName RD4
SYMATTR Value 3.9k
SYMBOL res -816 -112 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName RD5
SYMATTR Value 52
SYMBOL cap -576 64 R0
SYMATTR InstName C
SYMATTR Value 0.2uF
SYMBOL ind -448 32 R0
SYMATTR InstName L1
SYMATTR Value 0.2H
SYMATTR SpiceLine Rser=1
SYMBOL res 1072 128 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R1_L1
SYMATTR Value 1k
SYMBOL res 1072 272 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R2_L1
SYMATTR Value 1k
SYMBOL res 944 416 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R3_L1
SYMATTR Value 0.2k
SYMBOL cap 912 464 R0
SYMATTR InstName C_L1
SYMATTR Value 1uF
SYMBOL res 976 576 R0
SYMATTR InstName R4_L1
SYMATTR Value 1k
SYMBOL Opamps\\UniversalOpamp2 848 144 R180
SYMATTR InstName U1
SYMBOL Opamps\\UniversalOpamp2 1136 416 R0
SYMATTR InstName U2
SYMBOL voltage 1248 -224 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 15V
SYMBOL voltage 1152 -112 R180
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 15V
SYMBOL res 832 -16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R_L1
SYMATTR Value 1
SYMBOL voltage -240 48 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V4
SYMATTR Value 2.3V
SYMBOL ind -176 16 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L2.
SYMATTR Value 1H
SYMATTR SpiceLine Rser=500
SYMBOL npn 240 64 R270
SYMATTR InstName Q5
SYMATTR Value 2N3904
SYMBOL npn 144 -64 R270
SYMATTR InstName Q6
SYMATTR Value 2N3904
SYMBOL res 32 144 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName RD1.
SYMATTR Value 80k
SYMBOL res 384 144 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName RD2.
SYMATTR Value 18.6k
SYMBOL res 32 16 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName RD3.
SYMATTR Value 25k
SYMBOL res 176 0 R0
SYMATTR InstName RD4.
SYMATTR Value 3.9k
SYMBOL res 384 -112 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName RD5.
SYMATTR Value 52
SYMBOL cap 624 64 R0
SYMATTR InstName C.
SYMATTR Value 0.2uF
TEXT -1472 216 Left 2 !.tran 0 500m 400m 0.1m