Version 4
SHEET 1 880 680
WIRE 176 32 -16 32
WIRE 96 112 64 112
WIRE 176 112 176 32
WIRE -16 128 -16 32
WIRE 64 128 64 112
WIRE 656 176 544 176
WIRE 176 192 176 112
WIRE 144 208 64 208
WIRE 240 224 208 224
WIRE 368 224 240 224
WIRE 480 224 448 224
WIRE 656 224 656 176
WIRE -16 240 -16 208
WIRE 144 240 -16 240
WIRE 240 256 240 224
WIRE 592 272 544 272
WIRE 176 288 176 256
WIRE -16 304 -16 240
WIRE 64 352 64 208
WIRE 240 352 240 320
WIRE 240 352 64 352
WIRE 496 352 240 352
WIRE 656 352 656 320
WIRE 656 352 576 352
WIRE 656 368 656 352
WIRE -16 432 -16 384
WIRE 656 464 656 448
FLAG 176 288 0
FLAG 64 128 0
FLAG -16 432 0
FLAG 656 464 0
SYMBOL Opamps\\LT1006 176 160 R0
SYMATTR InstName U1
SYMBOL voltage 192 112 R90
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 12V
SYMBOL res -32 112 R0
SYMATTR InstName R1
SYMATTR Value 100k
SYMBOL res -32 288 R0
SYMATTR InstName R2
SYMATTR Value 844
SYMBOL npn 480 176 R0
SYMATTR InstName Q1
SYMATTR Value Qbd179
SYMBOL npn 592 224 R0
SYMATTR InstName Q2
SYMATTR Value Qbd179
SYMBOL res 592 336 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL cap 224 256 R0
SYMATTR InstName C1
SYMATTR Value 1n
SYMBOL res 640 352 R0
SYMATTR InstName R4
SYMATTR Value 0.1
SYMBOL res 464 208 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 1k
TEXT -40 488 Left 2 !.tran 0 100m 0 1u startup