Version 4
SHEET 1 1136 680
WIRE 144 -416 144 -448
WIRE 272 -416 272 -448
WIRE 400 -416 400 -448
WIRE 400 -320 400 -352
WIRE 144 -304 144 -336
WIRE 272 -304 272 -336
WIRE 400 -224 400 -256
WIRE 400 -128 400 -160
WIRE 400 -16 400 -64
WIRE -336 16 -336 -16
WIRE 96 16 96 -48
WIRE 160 16 96 16
WIRE 336 32 224 32
WIRE 16 48 -48 48
WIRE 128 48 96 48
WIRE 160 48 128 48
WIRE 128 96 128 48
WIRE 400 112 400 80
WIRE 400 112 368 112
WIRE -336 128 -336 96
WIRE -208 128 -336 128
WIRE 400 128 400 112
WIRE -112 144 -144 144
WIRE -80 144 -112 144
WIRE 64 144 0 144
WIRE -336 160 -336 128
WIRE 128 240 128 192
WIRE 400 240 400 208
WIRE -336 288 -336 240
WIRE 128 320 64 320
WIRE 128 368 128 320
WIRE -112 416 -112 144
WIRE -80 416 -112 416
WIRE 64 416 0 416
WIRE 128 496 128 464
WIRE 128 608 128 576
FLAG 144 -304 0
FLAG 144 -448 V+
FLAG 192 0 V+
FLAG 192 64 0
FLAG 272 -448 VSIG
FLAG 272 -304 0
FLAG 400 -448 V+
FLAG 400 240 0
FLAG -48 48 VSIG
FLAG -208 160 VSIG
FLAG -176 112 V+
FLAG -176 176 0
FLAG 128 240 0
FLAG 0 320 V+
FLAG 128 608 0
FLAG 368 112 VSENSE
FLAG 96 -48 VSENSE
FLAG -336 288 0
FLAG -336 -16 V+
SYMBOL Opamps\\opamp2 192 -32 R0
SYMATTR InstName U1
SYMATTR Value LM324
SYMBOL voltage 144 -432 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 18V
SYMBOL npn 336 -16 R0
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL voltage 272 -432 R0
WINDOW 3 24 44 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 24 44 Left 2
SYMATTR Value ""
SYMATTR InstName V2
SYMBOL LED 384 -128 R0
SYMATTR InstName D1
SYMATTR Value LXHL-BW02
SYMBOL res 384 112 R0
SYMATTR InstName R1
SYMATTR Value 10R
SYMBOL LED 384 -224 R0
SYMATTR InstName D2
SYMATTR Value LXHL-BW02
SYMBOL LED 384 -320 R0
SYMATTR InstName D3
SYMATTR Value LXHL-BW02
SYMBOL LED 384 -416 R0
SYMATTR InstName D4
SYMATTR Value LXHL-BW02
SYMBOL Opamps\\opamp2 -176 80 R0
SYMATTR InstName U2
SYMATTR Value LM324
SYMBOL npn 64 96 R0
SYMATTR InstName Q2
SYMATTR Value 2N3904
SYMBOL res 112 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL res 16 128 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 4.7k
SYMBOL res 16 400 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 4.7k
SYMBOL npn 64 368 R0
SYMATTR InstName Q3
SYMATTR Value 2N3904
SYMBOL LED 0 336 R270
WINDOW 0 72 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D5
SYMATTR Value LXHL-BW02
SYMBOL res 112 480 R0
SYMATTR InstName R5
SYMATTR Value 2.7k
SYMBOL res -352 0 R0
SYMATTR InstName R6
SYMATTR Value 330k
SYMBOL res -352 144 R0
SYMATTR InstName R7
SYMATTR Value 5.6k
TEXT 312 344 Left 2 !.include LM324.txt
TEXT 312 392 Left 2 !.dc V2 0mV 400mV