Version 4 SHEET 1 972 740 WIRE -336 -688 -448 -688 WIRE -48 -688 -336 -688 WIRE 96 -688 -48 -688 WIRE 192 -688 96 -688 WIRE 304 -688 192 -688 WIRE 304 -656 304 -688 WIRE -48 -608 -48 -688 WIRE 192 -608 192 -688 WIRE 304 -560 304 -576 WIRE 304 -560 256 -560 WIRE 96 -528 96 -688 WIRE 192 -480 192 -512 WIRE 192 -480 160 -480 WIRE 304 -480 304 -560 WIRE 304 -480 192 -480 WIRE -48 -400 -48 -544 WIRE -48 -400 -464 -400 WIRE 96 -400 96 -432 WIRE 96 -400 -48 -400 WIRE 688 -400 464 -400 WIRE -336 -368 -336 -688 WIRE 96 -368 96 -400 WIRE -240 -320 -272 -320 WIRE -128 -320 -240 -320 WIRE 192 -320 160 -320 WIRE 304 -320 192 -320 WIRE -240 -272 -240 -320 WIRE 192 -272 192 -320 WIRE -128 -224 -128 -320 WIRE -128 -224 -176 -224 WIRE 304 -224 304 -320 WIRE 304 -224 256 -224 WIRE -128 -208 -128 -224 WIRE 304 -208 304 -224 WIRE -48 -192 -48 -400 WIRE -432 -112 -464 -112 WIRE -336 -112 -336 -272 WIRE -336 -112 -432 -112 WIRE -240 -112 -240 -176 WIRE -240 -112 -336 -112 WIRE -128 -112 -128 -128 WIRE -128 -112 -240 -112 WIRE -48 -112 -48 -128 WIRE -48 -112 -128 -112 WIRE 96 -112 96 -272 WIRE 96 -112 -48 -112 WIRE 192 -112 192 -176 WIRE 192 -112 96 -112 WIRE 304 -112 304 -128 WIRE 304 -112 192 -112 WIRE 464 -32 32 -32 WIRE -160 16 -304 16 WIRE -48 16 -96 16 WIRE 32 16 32 -32 WIRE 32 16 16 16 WIRE 64 16 32 16 WIRE 464 16 464 -32 WIRE 496 16 464 16 WIRE -352 32 -480 32 WIRE 176 32 128 32 WIRE 224 32 176 32 WIRE 688 32 688 -400 WIRE 688 32 560 32 WIRE -432 80 -432 -112 WIRE -352 80 -432 80 WIRE -96 80 -96 16 WIRE 64 80 -96 80 WIRE 224 80 176 80 WIRE 496 80 336 80 WIRE 176 96 176 80 WIRE -304 224 -304 96 WIRE 176 224 176 176 WIRE 176 224 -304 224 WIRE -304 256 -304 224 FLAG -480 32 SNS IOPIN -480 32 In FLAG 176 32 r_edge FLAG -464 -400 DRV IOPIN -464 -400 Out FLAG 464 -400 one_shot FLAG -448 -688 VCC IOPIN -448 -688 In FLAG -464 -112 VEE IOPIN -464 -112 BiDir FLAG -304 256 0 SYMBOL Digital\\srflop 272 -16 R0 WINDOW 123 -37 115 Left 0 SYMATTR Value2 td=5n SYMATTR InstName A1 SYMBOL bv 176 80 R0 WINDOW 0 39 59 Left 0 WINDOW 3 24 91 Left 0 SYMATTR InstName B1 SYMATTR Value V=delay(v(r_edge),{T}) SYMBOL Digital\\schmtbuf -160 -48 R0 SYMATTR InstName A2 SYMBOL e -304 0 R0 WINDOW 0 32 60 Left 0 SYMATTR InstName E1 SYMATTR Value 26.32 SYMBOL Digital\\and 96 -16 R0 WINDOW 0 -7 15 Left 0 SYMATTR InstName A3 SYMBOL Digital\\inv -48 -48 R0 WINDOW 3 -13 98 Left 0 SYMATTR Value Td=20n SYMATTR InstName A4 SYMBOL Digital\\and 528 -16 R0 SYMATTR InstName A5 SYMBOL cap -64 -192 R0 SYMATTR InstName C1 SYMATTR Value 10p SYMBOL bi2 304 -208 R0 SYMATTR Value I=IF(v(one_shot)<=0.5, 32e-4,0) SYMATTR InstName B2 SYMBOL bi2 304 -656 R0 SYMATTR Value I=IF(v(one_shot)>0.5, 32e-4,0) SYMATTR InstName B3 SYMBOL cap -64 -608 R0 WINDOW 0 40 33 Left 0 WINDOW 3 23 8 Left 0 SYMATTR InstName C2 SYMATTR Value 10p SYMBOL npn 160 -368 M0 SYMATTR InstName Q1 SYMATTR Value 2N5210 SYMBOL npn 256 -272 M0 SYMATTR InstName Q2 SYMATTR Value 2N5210 SYMBOL pnp 160 -432 R180 SYMATTR InstName Q3 SYMATTR Value 2N5087 SYMBOL pnp 256 -512 R180 SYMATTR InstName Q4 SYMATTR Value 2N5087 SYMBOL npn -272 -368 M0 SYMATTR InstName Q5 SYMATTR Value 2N5210 SYMBOL npn -176 -272 M0 SYMATTR InstName Q6 SYMATTR Value 2N5210 SYMBOL current -128 -128 R180 WINDOW 0 39 28 Left 0 WINDOW 3 24 0 Left 0 SYMATTR InstName I1 SYMATTR Value 200µ TEXT -136 152 Left 0 ;From Helmut's \n1-shot_5n.asc TEXT -640 -544 Left 0 ;Vdrv stays low \nwhile SNS > 19mV \nor for a \nminimum of 1.7us TEXT 216 200 Left 0 !.param T=1.7u TEXT -408 -32 Left 0 ;SNS Trip \n0.5/19mv = 26.32 TEXT 488 200 Left 0 ;Charles R Patton\n5/7/2010 Rev.0 TEXT 552 -408 Left 0 ;lo if SNS is >19mV TEXT -272 -352 Left 0 ;sims Iq=200uA TEXT 120 -400 Left 0 ;sims 3.2 mA drive RECTANGLE Normal 48 208 -160 128 RECTANGLE Normal 448 -64 -176 256 2 RECTANGLE Normal 944 368 -800 -912