Version 4
SHEET 1 880 680
WIRE 256 -16 144 -16
WIRE 144 16 144 -16
WIRE 256 32 256 -16
WIRE 144 112 144 96
WIRE 256 176 256 112
WIRE 304 176 256 176
WIRE 256 224 256 176
WIRE 256 224 208 224
WIRE 256 272 208 272
WIRE 256 320 256 272
WIRE 256 320 208 320
WIRE 256 352 256 320
FLAG 256 352 0
FLAG 144 112 0
FLAG 304 176 out
IOPIN 304 176 Out
FLAG 256 -16 V+
SYMBOL res 240 16 R0
SYMATTR InstName R1
SYMATTR Value 2.2k
SYMBOL Misc\\battery 144 0 R0
SYMATTR InstName V1
SYMATTR Value 3
SYMBOL Miscel\\micelectret1 96 240 R0
SYMATTR InstName Mic
TEXT -176 24 Left 0 !.op
TEXT -176 56 Left 0 !.tran 0 10m 0 1u
TEXT -176 88 Left 0 !.options plotwinsize=0