Version 4
SHEET 1 880 680
WIRE 240 -176 -176 -176
WIRE 496 -176 240 -176
WIRE 496 -112 496 -176
WIRE 240 0 240 -176
WIRE 496 16 496 -48
WIRE 240 80 224 80
WIRE 224 96 224 80
WIRE 448 96 224 96
WIRE 224 176 224 96
WIRE 320 176 224 176
WIRE 496 176 496 112
WIRE 496 176 384 176
WIRE -176 208 -176 -176
WIRE 16 224 -48 224
WIRE 128 224 96 224
WIRE 160 224 128 224
WIRE 384 224 384 176
WIRE 496 224 496 176
FLAG -176 288 0
FLAG -48 304 0
FLAG 224 272 0
FLAG 320 272 0
FLAG 496 304 0
FLAG 128 304 0
SYMBOL res 112 208 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 10K
SYMBOL res 256 96 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R3
SYMATTR Value 68K
SYMBOL res 512 320 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R4
SYMATTR Value 1.8
SYMBOL npn 160 176 R0
SYMATTR InstName Q1
SYMATTR Value 2N2222
SYMBOL npn 384 176 M0
SYMATTR InstName Q2
SYMATTR Value 2N2222
SYMBOL nmos 448 16 R0
SYMATTR InstName M1
SYMBOL voltage -48 208 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 3.3
SYMBOL voltage -176 192 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 12V
SYMBOL LED 480 -112 R0
SYMATTR InstName D1
SYMATTR Value LXK2-PW14
SYMBOL res 112 208 R0
SYMATTR InstName R1
SYMATTR Value 10K
TEXT -208 328 Left 2 !.tran 1