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original_filter.ascVersion 4 SHEET 1 1472 680 WIRE 256 -96 208 -96 WIRE 480 -96 256 -96 WIRE 720 -96 480 -96 WIRE 944 -96 816 -96 WIRE 1088 -96 944 -96 WIRE 1248 -96 1088 -96 WIRE 1360 -96 1248 -96 WIRE 480 0 480 -96 WIRE 944 16 944 -96 WIRE 1248 144 1248 -96 WIRE 256 160 256 -96 WIRE 1088 160 1088 -96 WIRE 480 192 480 80 WIRE 608 192 480 192 WIRE 800 192 800 -48 WIRE 800 192 688 192 WIRE 944 192 944 80 WIRE 944 192 800 192 WIRE 480 288 480 192 WIRE 256 464 256 240 WIRE 480 464 480 352 WIRE 480 464 256 464 WIRE 1088 464 1088 224 WIRE 1088 464 480 464 WIRE 1248 464 1248 224 WIRE 1248 464 1088 464 WIRE 256 496 256 464 FLAG 256 496 0 FLAG 208 -96 Vin IOPIN 208 -96 In FLAG 1360 -96 Vout IOPIN 1360 -96 Out SYMBOL voltage 256 144 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value PULSE(345 340 0 20ms 80ms 0 100ms) SYMBOL res 464 -16 R0 SYMATTR InstName R1 SYMATTR Value 650k SYMBOL cap 464 288 R0 SYMATTR InstName C1 SYMATTR Value 100 SYMBOL nmos 720 -48 R270 SYMATTR InstName M1 SYMATTR Value IRFP240 SYMBOL cap 1072 160 R0 SYMATTR InstName C2 SYMATTR Value 68 SYMBOL res 1232 128 R0 SYMATTR InstName R3 SYMATTR Value 30k SYMBOL res 704 176 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R4 SYMATTR Value 100k SYMBOL zener 928 16 R0 SYMATTR InstName D1 SYMATTR Value BZX84C12L SYMATTR Description Diode SYMATTR Type diode TEXT 264 560 Left 2 !.tran 0 10s 9500ms