Version 4 SHEET 1 1204 976 WIRE 112 -80 96 -80 WIRE 208 -80 176 -80 WIRE 384 -80 208 -80 WIRE 560 -80 384 -80 WIRE 720 -80 560 -80 WIRE 384 -32 384 -80 WIRE 208 0 208 -80 WIRE 720 16 720 -80 WIRE 560 32 560 -80 WIRE 384 80 384 48 WIRE 496 80 384 80 WIRE 384 112 384 80 WIRE 208 160 208 80 WIRE 208 160 -16 160 WIRE 320 160 208 160 WIRE -16 192 -16 160 WIRE 208 208 208 160 WIRE 384 240 384 208 WIRE -16 288 -16 272 WIRE -16 288 -64 288 WIRE 560 288 560 128 WIRE 832 288 560 288 WIRE -64 304 -64 288 WIRE -16 304 -16 288 WIRE 208 352 208 272 WIRE 384 352 384 320 WIRE 384 352 208 352 WIRE 560 352 560 288 WIRE -64 400 -64 384 WIRE -16 400 -16 384 WIRE -16 400 -64 400 WIRE 384 400 384 352 WIRE -16 416 -16 400 WIRE 208 416 208 352 WIRE -16 528 -16 480 WIRE 208 528 208 480 WIRE 384 528 384 480 WIRE 560 528 560 432 WIRE 720 528 720 96 FLAG -16 528 0 FLAG 208 528 0 FLAG 384 528 0 FLAG 720 528 0 FLAG 96 -80 0 FLAG 832 288 zum_FPGA IOPIN 832 288 Out FLAG 560 528 0 SYMBOL npn 320 112 R0 SYMATTR InstName Q1 SYMATTR Value BF199 SYMBOL res 368 384 R0 SYMATTR InstName R1 SYMATTR Value 1k SYMBOL cap 192 416 R0 SYMATTR InstName C1 SYMATTR Value 100p SYMBOL cap 192 208 R0 SYMATTR InstName C2 SYMATTR Value 68p SYMBOL cap -32 416 R0 SYMATTR InstName C3 SYMATTR Value 7p SYMBOL ind -32 288 R0 SYMATTR InstName L1 SYMATTR Value 28.9µ SYMBOL res -32 176 R0 SYMATTR InstName R2 SYMATTR Value 1 SYMBOL res 192 -16 R0 SYMATTR InstName R3 SYMATTR Value 50k SYMBOL voltage 720 0 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR Value2 "" SYMATTR SpiceLine "" SYMATTR InstName V1 SYMATTR Value 3.3 SYMBOL res 368 224 R0 SYMATTR InstName R5 SYMATTR Value 100 SYMBOL res 544 448 M180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R8 SYMATTR Value 2.2k SYMBOL cap 176 -96 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C4 SYMATTR Value 10n SYMBOL res 368 -48 R0 SYMATTR InstName R9 SYMATTR Value 270 SYMATTR SpiceLine "" SYMBOL res -48 288 M0 SYMATTR InstName R4 SYMATTR Value 80k SYMATTR SpiceLine "" SYMBOL pnp 496 128 M180 WINDOW 0 74 17 Left 2 WINDOW 3 43 51 Left 2 SYMATTR InstName Q2 SYMATTR Value BF324 TEXT -112 40 Left 2 !.tran 0 100u 0 1n