Version 4 SHEET 1 880 728 WIRE 464 416 464 384 WIRE 464 512 416 512 WIRE 464 512 464 480 WIRE 560 256 416 256 WIRE 560 272 560 256 WIRE 560 384 464 384 WIRE 560 384 560 352 WIRE 560 400 560 384 WIRE 560 512 464 512 WIRE 560 512 560 480 WIRE 640 384 560 384 WIRE 640 400 640 384 WIRE 640 512 560 512 WIRE 640 512 640 480 FLAG 416 256 SP1 FLAG 416 512 SP2 SYMBOL res 544 256 R0 WINDOW 0 -37 36 Left 0 WINDOW 3 -35 66 Left 0 SYMATTR InstName R2 SYMATTR Value 6 SYMBOL res 544 384 R0 WINDOW 0 37 37 Left 0 WINDOW 3 38 66 Left 0 SYMATTR InstName R3 SYMATTR Value 18 SYMBOL cap 448 416 R0 SYMATTR InstName C1 SYMATTR Value 820µ SYMBOL ind 624 384 R0 SYMATTR InstName L1 SYMATTR Value 18m