Version 4
SHEET 1 880 680
WIRE 448 -80 112 -80
WIRE 448 0 448 -80
WIRE 224 112 176 112
WIRE 352 112 304 112
WIRE 112 192 112 -80
WIRE 112 192 -48 192
WIRE 176 192 176 112
WIRE 176 192 112 192
WIRE 240 192 176 192
WIRE 352 192 352 112
WIRE 352 192 304 192
WIRE 448 192 448 64
WIRE 448 192 352 192
WIRE 448 240 448 192
WIRE -48 304 -48 192
WIRE 448 352 448 304
WIRE -48 480 -48 384
WIRE 208 480 -48 480
WIRE 448 480 448 432
WIRE 448 480 208 480
WIRE 208 560 208 480
FLAG 208 560 0
SYMBOL res 320 96 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 27k
SYMBOL diode 240 208 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMBOL cap 432 240 R0
SYMATTR InstName C1
SYMATTR Value 2n
SYMBOL res 432 336 R0
SYMATTR InstName R2
SYMATTR Value 220k
SYMBOL LED 464 64 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
SYMATTR Value NSSWS108T
SYMBOL voltage -48 288 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value SINE(0 325 50)
TEXT -208 424 Left 2 !.tran 200m