pilo Posted June 16, 2003 Report Share Posted June 16, 2003 I made the LTC, juste for the 2 leds and... they're always on!!! I use a 74LS00, but I don't think the speed here is important (it is with DIN and DOUT? we can't use LS instead of HC?).if someone have the answer of this problem... I try to change the 74LS00.. but the same so... Quote Link to comment Share on other sites More sharing options...
pilo Posted June 18, 2003 Author Report Share Posted June 18, 2003 Oky I fix it... but...i change the value of R3 and R4 to 4.7k...!!! I was surprise by the 100k... and I take my old book of digital schematic, and there they made the same monoflop with a 400ohm... Quote Link to comment Share on other sites More sharing options...
TK. Posted June 18, 2003 Report Share Posted June 18, 2003 Than lower the R*C value, than shorter the delay time of the monoflop. However, it's not clear to me why 100k wasn't working, maybe you are using a bigger capacitor?Best Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
pilo Posted June 18, 2003 Author Report Share Posted June 18, 2003 No I use a 10µF caps... maybe the 74LS00? I didn't change the caps, it works well with 4.7k and 10µ... ;) I was just worried because I study monoflop circuit and I wasn't able to make it works! ;)Thanks! Quote Link to comment Share on other sites More sharing options...
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